#!/usr/bin/env node
'use strict';

function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }

var fs = require('fs');
var fs__default = _interopDefault(fs);
var path = require('path');
var path__default = _interopDefault(path);
var module$1 = _interopDefault(require('module'));
var os = _interopDefault(require('os'));
var rollup = require('../dist/rollup.js');
var assert = _interopDefault(require('assert'));
var events = _interopDefault(require('events'));

var minimist = function (args, opts) {
    if (!opts) { opts = {}; }
    
    var flags = { bools : {}, strings : {}, unknownFn: null };

    if (typeof opts['unknown'] === 'function') {
        flags.unknownFn = opts['unknown'];
    }

    if (typeof opts['boolean'] === 'boolean' && opts['boolean']) {
      flags.allBools = true;
    } else {
      [].concat(opts['boolean']).filter(Boolean).forEach(function (key) {
          flags.bools[key] = true;
      });
    }
    
    var aliases = {};
    Object.keys(opts.alias || {}).forEach(function (key) {
        aliases[key] = [].concat(opts.alias[key]);
        aliases[key].forEach(function (x) {
            aliases[x] = [key].concat(aliases[key].filter(function (y) {
                return x !== y;
            }));
        });
    });

    [].concat(opts.string).filter(Boolean).forEach(function (key) {
        flags.strings[key] = true;
        if (aliases[key]) {
            flags.strings[aliases[key]] = true;
        }
     });

    var defaults = opts['default'] || {};
    
    var argv = { _ : [] };
    Object.keys(flags.bools).forEach(function (key) {
        setArg(key, defaults[key] === undefined ? false : defaults[key]);
    });
    
    var notFlags = [];

    if (args.indexOf('--') !== -1) {
        notFlags = args.slice(args.indexOf('--')+1);
        args = args.slice(0, args.indexOf('--'));
    }

    function argDefined(key, arg) {
        return (flags.allBools && /^--[^=]+$/.test(arg)) ||
            flags.strings[key] || flags.bools[key] || aliases[key];
    }

    function setArg (key, val, arg) {
        if (arg && flags.unknownFn && !argDefined(key, arg)) {
            if (flags.unknownFn(arg) === false) { return; }
        }

        var value = !flags.strings[key] && isNumber(val)
            ? Number(val) : val;
        setKey(argv, key.split('.'), value);
        
        (aliases[key] || []).forEach(function (x) {
            setKey(argv, x.split('.'), value);
        });
    }

    function setKey (obj, keys, value) {
        var o = obj;
        keys.slice(0,-1).forEach(function (key) {
            if (o[key] === undefined) { o[key] = {}; }
            o = o[key];
        });

        var key = keys[keys.length - 1];
        if (o[key] === undefined || flags.bools[key] || typeof o[key] === 'boolean') {
            o[key] = value;
        }
        else if (Array.isArray(o[key])) {
            o[key].push(value);
        }
        else {
            o[key] = [ o[key], value ];
        }
    }
    
    function aliasIsBoolean(key) {
      return aliases[key].some(function (x) {
          return flags.bools[x];
      });
    }

    for (var i = 0; i < args.length; i++) {
        var arg = args[i];
        
        if (/^--.+=/.test(arg)) {
            // Using [\s\S] instead of . because js doesn't support the
            // 'dotall' regex modifier. See:
            // http://stackoverflow.com/a/1068308/13216
            var m = arg.match(/^--([^=]+)=([\s\S]*)$/);
            var key = m[1];
            var value = m[2];
            if (flags.bools[key]) {
                value = value !== 'false';
            }
            setArg(key, value, arg);
        }
        else if (/^--no-.+/.test(arg)) {
            var key = arg.match(/^--no-(.+)/)[1];
            setArg(key, false, arg);
        }
        else if (/^--.+/.test(arg)) {
            var key = arg.match(/^--(.+)/)[1];
            var next = args[i + 1];
            if (next !== undefined && !/^-/.test(next)
            && !flags.bools[key]
            && !flags.allBools
            && (aliases[key] ? !aliasIsBoolean(key) : true)) {
                setArg(key, next, arg);
                i++;
            }
            else if (/^(true|false)$/.test(next)) {
                setArg(key, next === 'true', arg);
                i++;
            }
            else {
                setArg(key, flags.strings[key] ? '' : true, arg);
            }
        }
        else if (/^-[^-]+/.test(arg)) {
            var letters = arg.slice(1,-1).split('');
            
            var broken = false;
            for (var j = 0; j < letters.length; j++) {
                var next = arg.slice(j+2);
                
                if (next === '-') {
                    setArg(letters[j], next, arg);
                    continue;
                }
                
                if (/[A-Za-z]/.test(letters[j]) && /=/.test(next)) {
                    setArg(letters[j], next.split('=')[1], arg);
                    broken = true;
                    break;
                }
                
                if (/[A-Za-z]/.test(letters[j])
                && /-?\d+(\.\d*)?(e-?\d+)?$/.test(next)) {
                    setArg(letters[j], next, arg);
                    broken = true;
                    break;
                }
                
                if (letters[j+1] && letters[j+1].match(/\W/)) {
                    setArg(letters[j], arg.slice(j+2), arg);
                    broken = true;
                    break;
                }
                else {
                    setArg(letters[j], flags.strings[letters[j]] ? '' : true, arg);
                }
            }
            
            var key = arg.slice(-1)[0];
            if (!broken && key !== '-') {
                if (args[i+1] && !/^(-|--)[^-]/.test(args[i+1])
                && !flags.bools[key]
                && (aliases[key] ? !aliasIsBoolean(key) : true)) {
                    setArg(key, args[i+1], arg);
                    i++;
                }
                else if (args[i+1] && /true|false/.test(args[i+1])) {
                    setArg(key, args[i+1] === 'true', arg);
                    i++;
                }
                else {
                    setArg(key, flags.strings[key] ? '' : true, arg);
                }
            }
        }
        else {
            if (!flags.unknownFn || flags.unknownFn(arg) !== false) {
                argv._.push(
                    flags.strings['_'] || !isNumber(arg) ? arg : Number(arg)
                );
            }
            if (opts.stopEarly) {
                argv._.push.apply(argv._, args.slice(i + 1));
                break;
            }
        }
    }
    
    Object.keys(defaults).forEach(function (key) {
        if (!hasKey(argv, key.split('.'))) {
            setKey(argv, key.split('.'), defaults[key]);
            
            (aliases[key] || []).forEach(function (x) {
                setKey(argv, x.split('.'), defaults[key]);
            });
        }
    });
    
    if (opts['--']) {
        argv['--'] = new Array();
        notFlags.forEach(function(key) {
            argv['--'].push(key);
        });
    }
    else {
        notFlags.forEach(function(key) {
            argv._.push(key);
        });
    }

    return argv;
};

function hasKey (obj, keys) {
    var o = obj;
    keys.slice(0,-1).forEach(function (key) {
        o = (o[key] || {});
    });

    var key = keys[keys.length - 1];
    return key in o;
}

function isNumber (x) {
    if (typeof x === 'number') { return true; }
    if (/^0x[0-9a-f]+$/i.test(x)) { return true; }
    return /^[-+]?(?:\d+(?:\.\d*)?|\.\d+)(e[-+]?\d+)?$/.test(x);
}

var help = "rollup version __VERSION__\n=====================================\n\nUsage: rollup [options] <entry file>\n\nBasic options:\n\n-v, --version               Show version number\n-h, --help                  Show this help message\n-c, --config                Use this config file (if argument is used but value\n                              is unspecified, defaults to rollup.config.js)\n-w, --watch                 Watch files in bundle and rebuild on changes\n-i, --input                 Input (alternative to <entry file>)\n-o, --output.file <output>  Output (if absent, prints to stdout)\n-f, --output.format [es]    Type of output (amd, cjs, es, iife, umd)\n-e, --external              Comma-separate list of module IDs to exclude\n-g, --globals               Comma-separate list of `module ID:Global` pairs\n                              Any module IDs defined here are added to external\n-n, --name                  Name for UMD export\n-m, --sourcemap             Generate sourcemap (`-m inline` for inline map)\n-l, --legacy                Support IE8\n--amd.id                    ID for AMD module (default is anonymous)\n--amd.define                Function to use in place of `define`\n--no-strict                 Don't emit a `\"use strict\";` in the generated modules.\n--no-indent                 Don't indent result\n--environment <values>      Settings passed to config file (see example)\n--no-conflict               Generate a noConflict method for UMD globals\n--no-treeshake              Disable tree-shaking\n--silent                    Don't print warnings\n--intro                     Content to insert at top of bundle (inside wrapper)\n--outro                     Content to insert at end of bundle (inside wrapper)\n--banner                    Content to insert at top of bundle (outside wrapper)\n--footer                    Content to insert at end of bundle (outside wrapper)\n--interop                   Include interop block (true by default)\n\nExamples:\n\n# use settings in config file\nrollup -c\n\n# in config file, process.env.INCLUDE_DEPS === 'true'\n# and process.env.BUILD === 'production'\nrollup -c --environment INCLUDE_DEPS,BUILD:production\n\n# create CommonJS bundle.js from src/main.js\nrollup --format=cjs --output=bundle.js -- src/main.js\n\n# create self-executing IIFE using `window.jQuery`\n# and `window._` as external globals\nrollup -f iife --globals jquery:jQuery,lodash:_ \\\n  -i src/app.js -o build/app.js -m build/app.js.map\n\nNotes:\n\n* When piping to stdout, only inline sourcemaps are permitted\n\nFor more information visit https://rollupjs.org\n";

var version = "0.52.3";

var modules = {};

var getModule = function(dir) {
  var rootPath = dir ? path__default.resolve(dir) : process.cwd();
  var rootName = path__default.join(rootPath, '@root');
  var root = modules[rootName];
  if (!root) {
    root = new module$1(rootName);
    root.filename = rootName;
    root.paths = module$1._nodeModulePaths(rootPath);
    modules[rootName] = root;
  }
  return root;
};

var requireRelative = function(requested, relativeTo) {
  var root = getModule(relativeTo);
  return root.require(requested);
};

requireRelative.resolve = function(requested, relativeTo) {
  var root = getModule(relativeTo);
  return module$1._resolveFilename(requested, root);
};

var requireRelative_1 = requireRelative;

function createCommonjsModule(fn, module) {
	return module = { exports: {} }, fn(module, module.exports), module.exports;
}

var matchOperatorsRe = /[|\\{}()[\]^$+*?.]/g;

var escapeStringRegexp = function (str) {
	if (typeof str !== 'string') {
		throw new TypeError('Expected a string');
	}

	return str.replace(matchOperatorsRe, '\\$&');
};

var colorName = {
	"aliceblue": [240, 248, 255],
	"antiquewhite": [250, 235, 215],
	"aqua": [0, 255, 255],
	"aquamarine": [127, 255, 212],
	"azure": [240, 255, 255],
	"beige": [245, 245, 220],
	"bisque": [255, 228, 196],
	"black": [0, 0, 0],
	"blanchedalmond": [255, 235, 205],
	"blue": [0, 0, 255],
	"blueviolet": [138, 43, 226],
	"brown": [165, 42, 42],
	"burlywood": [222, 184, 135],
	"cadetblue": [95, 158, 160],
	"chartreuse": [127, 255, 0],
	"chocolate": [210, 105, 30],
	"coral": [255, 127, 80],
	"cornflowerblue": [100, 149, 237],
	"cornsilk": [255, 248, 220],
	"crimson": [220, 20, 60],
	"cyan": [0, 255, 255],
	"darkblue": [0, 0, 139],
	"darkcyan": [0, 139, 139],
	"darkgoldenrod": [184, 134, 11],
	"darkgray": [169, 169, 169],
	"darkgreen": [0, 100, 0],
	"darkgrey": [169, 169, 169],
	"darkkhaki": [189, 183, 107],
	"darkmagenta": [139, 0, 139],
	"darkolivegreen": [85, 107, 47],
	"darkorange": [255, 140, 0],
	"darkorchid": [153, 50, 204],
	"darkred": [139, 0, 0],
	"darksalmon": [233, 150, 122],
	"darkseagreen": [143, 188, 143],
	"darkslateblue": [72, 61, 139],
	"darkslategray": [47, 79, 79],
	"darkslategrey": [47, 79, 79],
	"darkturquoise": [0, 206, 209],
	"darkviolet": [148, 0, 211],
	"deeppink": [255, 20, 147],
	"deepskyblue": [0, 191, 255],
	"dimgray": [105, 105, 105],
	"dimgrey": [105, 105, 105],
	"dodgerblue": [30, 144, 255],
	"firebrick": [178, 34, 34],
	"floralwhite": [255, 250, 240],
	"forestgreen": [34, 139, 34],
	"fuchsia": [255, 0, 255],
	"gainsboro": [220, 220, 220],
	"ghostwhite": [248, 248, 255],
	"gold": [255, 215, 0],
	"goldenrod": [218, 165, 32],
	"gray": [128, 128, 128],
	"green": [0, 128, 0],
	"greenyellow": [173, 255, 47],
	"grey": [128, 128, 128],
	"honeydew": [240, 255, 240],
	"hotpink": [255, 105, 180],
	"indianred": [205, 92, 92],
	"indigo": [75, 0, 130],
	"ivory": [255, 255, 240],
	"khaki": [240, 230, 140],
	"lavender": [230, 230, 250],
	"lavenderblush": [255, 240, 245],
	"lawngreen": [124, 252, 0],
	"lemonchiffon": [255, 250, 205],
	"lightblue": [173, 216, 230],
	"lightcoral": [240, 128, 128],
	"lightcyan": [224, 255, 255],
	"lightgoldenrodyellow": [250, 250, 210],
	"lightgray": [211, 211, 211],
	"lightgreen": [144, 238, 144],
	"lightgrey": [211, 211, 211],
	"lightpink": [255, 182, 193],
	"lightsalmon": [255, 160, 122],
	"lightseagreen": [32, 178, 170],
	"lightskyblue": [135, 206, 250],
	"lightslategray": [119, 136, 153],
	"lightslategrey": [119, 136, 153],
	"lightsteelblue": [176, 196, 222],
	"lightyellow": [255, 255, 224],
	"lime": [0, 255, 0],
	"limegreen": [50, 205, 50],
	"linen": [250, 240, 230],
	"magenta": [255, 0, 255],
	"maroon": [128, 0, 0],
	"mediumaquamarine": [102, 205, 170],
	"mediumblue": [0, 0, 205],
	"mediumorchid": [186, 85, 211],
	"mediumpurple": [147, 112, 219],
	"mediumseagreen": [60, 179, 113],
	"mediumslateblue": [123, 104, 238],
	"mediumspringgreen": [0, 250, 154],
	"mediumturquoise": [72, 209, 204],
	"mediumvioletred": [199, 21, 133],
	"midnightblue": [25, 25, 112],
	"mintcream": [245, 255, 250],
	"mistyrose": [255, 228, 225],
	"moccasin": [255, 228, 181],
	"navajowhite": [255, 222, 173],
	"navy": [0, 0, 128],
	"oldlace": [253, 245, 230],
	"olive": [128, 128, 0],
	"olivedrab": [107, 142, 35],
	"orange": [255, 165, 0],
	"orangered": [255, 69, 0],
	"orchid": [218, 112, 214],
	"palegoldenrod": [238, 232, 170],
	"palegreen": [152, 251, 152],
	"paleturquoise": [175, 238, 238],
	"palevioletred": [219, 112, 147],
	"papayawhip": [255, 239, 213],
	"peachpuff": [255, 218, 185],
	"peru": [205, 133, 63],
	"pink": [255, 192, 203],
	"plum": [221, 160, 221],
	"powderblue": [176, 224, 230],
	"purple": [128, 0, 128],
	"rebeccapurple": [102, 51, 153],
	"red": [255, 0, 0],
	"rosybrown": [188, 143, 143],
	"royalblue": [65, 105, 225],
	"saddlebrown": [139, 69, 19],
	"salmon": [250, 128, 114],
	"sandybrown": [244, 164, 96],
	"seagreen": [46, 139, 87],
	"seashell": [255, 245, 238],
	"sienna": [160, 82, 45],
	"silver": [192, 192, 192],
	"skyblue": [135, 206, 235],
	"slateblue": [106, 90, 205],
	"slategray": [112, 128, 144],
	"slategrey": [112, 128, 144],
	"snow": [255, 250, 250],
	"springgreen": [0, 255, 127],
	"steelblue": [70, 130, 180],
	"tan": [210, 180, 140],
	"teal": [0, 128, 128],
	"thistle": [216, 191, 216],
	"tomato": [255, 99, 71],
	"turquoise": [64, 224, 208],
	"violet": [238, 130, 238],
	"wheat": [245, 222, 179],
	"white": [255, 255, 255],
	"whitesmoke": [245, 245, 245],
	"yellow": [255, 255, 0],
	"yellowgreen": [154, 205, 50]
};

var conversions = createCommonjsModule(function (module) {
/* MIT license */


// NOTE: conversions should only return primitive values (i.e. arrays, or
//       values that give correct `typeof` results).
//       do not use box values types (i.e. Number(), String(), etc.)

var reverseKeywords = {};
for (var key in colorName) {
	if (colorName.hasOwnProperty(key)) {
		reverseKeywords[colorName[key]] = key;
	}
}

var convert = module.exports = {
	rgb: {channels: 3, labels: 'rgb'},
	hsl: {channels: 3, labels: 'hsl'},
	hsv: {channels: 3, labels: 'hsv'},
	hwb: {channels: 3, labels: 'hwb'},
	cmyk: {channels: 4, labels: 'cmyk'},
	xyz: {channels: 3, labels: 'xyz'},
	lab: {channels: 3, labels: 'lab'},
	lch: {channels: 3, labels: 'lch'},
	hex: {channels: 1, labels: ['hex']},
	keyword: {channels: 1, labels: ['keyword']},
	ansi16: {channels: 1, labels: ['ansi16']},
	ansi256: {channels: 1, labels: ['ansi256']},
	hcg: {channels: 3, labels: ['h', 'c', 'g']},
	apple: {channels: 3, labels: ['r16', 'g16', 'b16']},
	gray: {channels: 1, labels: ['gray']}
};

// hide .channels and .labels properties
for (var model in convert) {
	if (convert.hasOwnProperty(model)) {
		if (!('channels' in convert[model])) {
			throw new Error('missing channels property: ' + model);
		}

		if (!('labels' in convert[model])) {
			throw new Error('missing channel labels property: ' + model);
		}

		if (convert[model].labels.length !== convert[model].channels) {
			throw new Error('channel and label counts mismatch: ' + model);
		}

		var channels = convert[model].channels;
		var labels = convert[model].labels;
		delete convert[model].channels;
		delete convert[model].labels;
		Object.defineProperty(convert[model], 'channels', {value: channels});
		Object.defineProperty(convert[model], 'labels', {value: labels});
	}
}

convert.rgb.hsl = function (rgb) {
	var r = rgb[0] / 255;
	var g = rgb[1] / 255;
	var b = rgb[2] / 255;
	var min = Math.min(r, g, b);
	var max = Math.max(r, g, b);
	var delta = max - min;
	var h;
	var s;
	var l;

	if (max === min) {
		h = 0;
	} else if (r === max) {
		h = (g - b) / delta;
	} else if (g === max) {
		h = 2 + (b - r) / delta;
	} else if (b === max) {
		h = 4 + (r - g) / delta;
	}

	h = Math.min(h * 60, 360);

	if (h < 0) {
		h += 360;
	}

	l = (min + max) / 2;

	if (max === min) {
		s = 0;
	} else if (l <= 0.5) {
		s = delta / (max + min);
	} else {
		s = delta / (2 - max - min);
	}

	return [h, s * 100, l * 100];
};

convert.rgb.hsv = function (rgb) {
	var r = rgb[0];
	var g = rgb[1];
	var b = rgb[2];
	var min = Math.min(r, g, b);
	var max = Math.max(r, g, b);
	var delta = max - min;
	var h;
	var s;
	var v;

	if (max === 0) {
		s = 0;
	} else {
		s = (delta / max * 1000) / 10;
	}

	if (max === min) {
		h = 0;
	} else if (r === max) {
		h = (g - b) / delta;
	} else if (g === max) {
		h = 2 + (b - r) / delta;
	} else if (b === max) {
		h = 4 + (r - g) / delta;
	}

	h = Math.min(h * 60, 360);

	if (h < 0) {
		h += 360;
	}

	v = ((max / 255) * 1000) / 10;

	return [h, s, v];
};

convert.rgb.hwb = function (rgb) {
	var r = rgb[0];
	var g = rgb[1];
	var b = rgb[2];
	var h = convert.rgb.hsl(rgb)[0];
	var w = 1 / 255 * Math.min(r, Math.min(g, b));

	b = 1 - 1 / 255 * Math.max(r, Math.max(g, b));

	return [h, w * 100, b * 100];
};

convert.rgb.cmyk = function (rgb) {
	var r = rgb[0] / 255;
	var g = rgb[1] / 255;
	var b = rgb[2] / 255;
	var c;
	var m;
	var y;
	var k;

	k = Math.min(1 - r, 1 - g, 1 - b);
	c = (1 - r - k) / (1 - k) || 0;
	m = (1 - g - k) / (1 - k) || 0;
	y = (1 - b - k) / (1 - k) || 0;

	return [c * 100, m * 100, y * 100, k * 100];
};

/**
 * See https://en.m.wikipedia.org/wiki/Euclidean_distance#Squared_Euclidean_distance
 * */
function comparativeDistance(x, y) {
	return (
		Math.pow(x[0] - y[0], 2) +
		Math.pow(x[1] - y[1], 2) +
		Math.pow(x[2] - y[2], 2)
	);
}

convert.rgb.keyword = function (rgb) {
	var reversed = reverseKeywords[rgb];
	if (reversed) {
		return reversed;
	}

	var currentClosestDistance = Infinity;
	var currentClosestKeyword;

	for (var keyword in colorName) {
		if (colorName.hasOwnProperty(keyword)) {
			var value = colorName[keyword];

			// Compute comparative distance
			var distance = comparativeDistance(rgb, value);

			// Check if its less, if so set as closest
			if (distance < currentClosestDistance) {
				currentClosestDistance = distance;
				currentClosestKeyword = keyword;
			}
		}
	}

	return currentClosestKeyword;
};

convert.keyword.rgb = function (keyword) {
	return colorName[keyword];
};

convert.rgb.xyz = function (rgb) {
	var r = rgb[0] / 255;
	var g = rgb[1] / 255;
	var b = rgb[2] / 255;

	// assume sRGB
	r = r > 0.04045 ? Math.pow(((r + 0.055) / 1.055), 2.4) : (r / 12.92);
	g = g > 0.04045 ? Math.pow(((g + 0.055) / 1.055), 2.4) : (g / 12.92);
	b = b > 0.04045 ? Math.pow(((b + 0.055) / 1.055), 2.4) : (b / 12.92);

	var x = (r * 0.4124) + (g * 0.3576) + (b * 0.1805);
	var y = (r * 0.2126) + (g * 0.7152) + (b * 0.0722);
	var z = (r * 0.0193) + (g * 0.1192) + (b * 0.9505);

	return [x * 100, y * 100, z * 100];
};

convert.rgb.lab = function (rgb) {
	var xyz = convert.rgb.xyz(rgb);
	var x = xyz[0];
	var y = xyz[1];
	var z = xyz[2];
	var l;
	var a;
	var b;

	x /= 95.047;
	y /= 100;
	z /= 108.883;

	x = x > 0.008856 ? Math.pow(x, 1 / 3) : (7.787 * x) + (16 / 116);
	y = y > 0.008856 ? Math.pow(y, 1 / 3) : (7.787 * y) + (16 / 116);
	z = z > 0.008856 ? Math.pow(z, 1 / 3) : (7.787 * z) + (16 / 116);

	l = (116 * y) - 16;
	a = 500 * (x - y);
	b = 200 * (y - z);

	return [l, a, b];
};

convert.hsl.rgb = function (hsl) {
	var h = hsl[0] / 360;
	var s = hsl[1] / 100;
	var l = hsl[2] / 100;
	var t1;
	var t2;
	var t3;
	var rgb;
	var val;

	if (s === 0) {
		val = l * 255;
		return [val, val, val];
	}

	if (l < 0.5) {
		t2 = l * (1 + s);
	} else {
		t2 = l + s - l * s;
	}

	t1 = 2 * l - t2;

	rgb = [0, 0, 0];
	for (var i = 0; i < 3; i++) {
		t3 = h + 1 / 3 * -(i - 1);
		if (t3 < 0) {
			t3++;
		}
		if (t3 > 1) {
			t3--;
		}

		if (6 * t3 < 1) {
			val = t1 + (t2 - t1) * 6 * t3;
		} else if (2 * t3 < 1) {
			val = t2;
		} else if (3 * t3 < 2) {
			val = t1 + (t2 - t1) * (2 / 3 - t3) * 6;
		} else {
			val = t1;
		}

		rgb[i] = val * 255;
	}

	return rgb;
};

convert.hsl.hsv = function (hsl) {
	var h = hsl[0];
	var s = hsl[1] / 100;
	var l = hsl[2] / 100;
	var smin = s;
	var lmin = Math.max(l, 0.01);
	var sv;
	var v;

	l *= 2;
	s *= (l <= 1) ? l : 2 - l;
	smin *= lmin <= 1 ? lmin : 2 - lmin;
	v = (l + s) / 2;
	sv = l === 0 ? (2 * smin) / (lmin + smin) : (2 * s) / (l + s);

	return [h, sv * 100, v * 100];
};

convert.hsv.rgb = function (hsv) {
	var h = hsv[0] / 60;
	var s = hsv[1] / 100;
	var v = hsv[2] / 100;
	var hi = Math.floor(h) % 6;

	var f = h - Math.floor(h);
	var p = 255 * v * (1 - s);
	var q = 255 * v * (1 - (s * f));
	var t = 255 * v * (1 - (s * (1 - f)));
	v *= 255;

	switch (hi) {
		case 0:
			return [v, t, p];
		case 1:
			return [q, v, p];
		case 2:
			return [p, v, t];
		case 3:
			return [p, q, v];
		case 4:
			return [t, p, v];
		case 5:
			return [v, p, q];
	}
};

convert.hsv.hsl = function (hsv) {
	var h = hsv[0];
	var s = hsv[1] / 100;
	var v = hsv[2] / 100;
	var vmin = Math.max(v, 0.01);
	var lmin;
	var sl;
	var l;

	l = (2 - s) * v;
	lmin = (2 - s) * vmin;
	sl = s * vmin;
	sl /= (lmin <= 1) ? lmin : 2 - lmin;
	sl = sl || 0;
	l /= 2;

	return [h, sl * 100, l * 100];
};

// http://dev.w3.org/csswg/css-color/#hwb-to-rgb
convert.hwb.rgb = function (hwb) {
	var h = hwb[0] / 360;
	var wh = hwb[1] / 100;
	var bl = hwb[2] / 100;
	var ratio = wh + bl;
	var i;
	var v;
	var f;
	var n;

	// wh + bl cant be > 1
	if (ratio > 1) {
		wh /= ratio;
		bl /= ratio;
	}

	i = Math.floor(6 * h);
	v = 1 - bl;
	f = 6 * h - i;

	if ((i & 0x01) !== 0) {
		f = 1 - f;
	}

	n = wh + f * (v - wh); // linear interpolation

	var r;
	var g;
	var b;
	switch (i) {
		default:
		case 6:
		case 0: r = v; g = n; b = wh; break;
		case 1: r = n; g = v; b = wh; break;
		case 2: r = wh; g = v; b = n; break;
		case 3: r = wh; g = n; b = v; break;
		case 4: r = n; g = wh; b = v; break;
		case 5: r = v; g = wh; b = n; break;
	}

	return [r * 255, g * 255, b * 255];
};

convert.cmyk.rgb = function (cmyk) {
	var c = cmyk[0] / 100;
	var m = cmyk[1] / 100;
	var y = cmyk[2] / 100;
	var k = cmyk[3] / 100;
	var r;
	var g;
	var b;

	r = 1 - Math.min(1, c * (1 - k) + k);
	g = 1 - Math.min(1, m * (1 - k) + k);
	b = 1 - Math.min(1, y * (1 - k) + k);

	return [r * 255, g * 255, b * 255];
};

convert.xyz.rgb = function (xyz) {
	var x = xyz[0] / 100;
	var y = xyz[1] / 100;
	var z = xyz[2] / 100;
	var r;
	var g;
	var b;

	r = (x * 3.2406) + (y * -1.5372) + (z * -0.4986);
	g = (x * -0.9689) + (y * 1.8758) + (z * 0.0415);
	b = (x * 0.0557) + (y * -0.2040) + (z * 1.0570);

	// assume sRGB
	r = r > 0.0031308
		? ((1.055 * Math.pow(r, 1.0 / 2.4)) - 0.055)
		: r * 12.92;

	g = g > 0.0031308
		? ((1.055 * Math.pow(g, 1.0 / 2.4)) - 0.055)
		: g * 12.92;

	b = b > 0.0031308
		? ((1.055 * Math.pow(b, 1.0 / 2.4)) - 0.055)
		: b * 12.92;

	r = Math.min(Math.max(0, r), 1);
	g = Math.min(Math.max(0, g), 1);
	b = Math.min(Math.max(0, b), 1);

	return [r * 255, g * 255, b * 255];
};

convert.xyz.lab = function (xyz) {
	var x = xyz[0];
	var y = xyz[1];
	var z = xyz[2];
	var l;
	var a;
	var b;

	x /= 95.047;
	y /= 100;
	z /= 108.883;

	x = x > 0.008856 ? Math.pow(x, 1 / 3) : (7.787 * x) + (16 / 116);
	y = y > 0.008856 ? Math.pow(y, 1 / 3) : (7.787 * y) + (16 / 116);
	z = z > 0.008856 ? Math.pow(z, 1 / 3) : (7.787 * z) + (16 / 116);

	l = (116 * y) - 16;
	a = 500 * (x - y);
	b = 200 * (y - z);

	return [l, a, b];
};

convert.lab.xyz = function (lab) {
	var l = lab[0];
	var a = lab[1];
	var b = lab[2];
	var x;
	var y;
	var z;

	y = (l + 16) / 116;
	x = a / 500 + y;
	z = y - b / 200;

	var y2 = Math.pow(y, 3);
	var x2 = Math.pow(x, 3);
	var z2 = Math.pow(z, 3);
	y = y2 > 0.008856 ? y2 : (y - 16 / 116) / 7.787;
	x = x2 > 0.008856 ? x2 : (x - 16 / 116) / 7.787;
	z = z2 > 0.008856 ? z2 : (z - 16 / 116) / 7.787;

	x *= 95.047;
	y *= 100;
	z *= 108.883;

	return [x, y, z];
};

convert.lab.lch = function (lab) {
	var l = lab[0];
	var a = lab[1];
	var b = lab[2];
	var hr;
	var h;
	var c;

	hr = Math.atan2(b, a);
	h = hr * 360 / 2 / Math.PI;

	if (h < 0) {
		h += 360;
	}

	c = Math.sqrt(a * a + b * b);

	return [l, c, h];
};

convert.lch.lab = function (lch) {
	var l = lch[0];
	var c = lch[1];
	var h = lch[2];
	var a;
	var b;
	var hr;

	hr = h / 360 * 2 * Math.PI;
	a = c * Math.cos(hr);
	b = c * Math.sin(hr);

	return [l, a, b];
};

convert.rgb.ansi16 = function (args) {
	var r = args[0];
	var g = args[1];
	var b = args[2];
	var value = 1 in arguments ? arguments[1] : convert.rgb.hsv(args)[2]; // hsv -> ansi16 optimization

	value = Math.round(value / 50);

	if (value === 0) {
		return 30;
	}

	var ansi = 30
		+ ((Math.round(b / 255) << 2)
		| (Math.round(g / 255) << 1)
		| Math.round(r / 255));

	if (value === 2) {
		ansi += 60;
	}

	return ansi;
};

convert.hsv.ansi16 = function (args) {
	// optimization here; we already know the value and don't need to get
	// it converted for us.
	return convert.rgb.ansi16(convert.hsv.rgb(args), args[2]);
};

convert.rgb.ansi256 = function (args) {
	var r = args[0];
	var g = args[1];
	var b = args[2];

	// we use the extended greyscale palette here, with the exception of
	// black and white. normal palette only has 4 greyscale shades.
	if (r === g && g === b) {
		if (r < 8) {
			return 16;
		}

		if (r > 248) {
			return 231;
		}

		return Math.round(((r - 8) / 247) * 24) + 232;
	}

	var ansi = 16
		+ (36 * Math.round(r / 255 * 5))
		+ (6 * Math.round(g / 255 * 5))
		+ Math.round(b / 255 * 5);

	return ansi;
};

convert.ansi16.rgb = function (args) {
	var color = args % 10;

	// handle greyscale
	if (color === 0 || color === 7) {
		if (args > 50) {
			color += 3.5;
		}

		color = color / 10.5 * 255;

		return [color, color, color];
	}

	var mult = (~~(args > 50) + 1) * 0.5;
	var r = ((color & 1) * mult) * 255;
	var g = (((color >> 1) & 1) * mult) * 255;
	var b = (((color >> 2) & 1) * mult) * 255;

	return [r, g, b];
};

convert.ansi256.rgb = function (args) {
	// handle greyscale
	if (args >= 232) {
		var c = (args - 232) * 10 + 8;
		return [c, c, c];
	}

	args -= 16;

	var rem;
	var r = Math.floor(args / 36) / 5 * 255;
	var g = Math.floor((rem = args % 36) / 6) / 5 * 255;
	var b = (rem % 6) / 5 * 255;

	return [r, g, b];
};

convert.rgb.hex = function (args) {
	var integer = ((Math.round(args[0]) & 0xFF) << 16)
		+ ((Math.round(args[1]) & 0xFF) << 8)
		+ (Math.round(args[2]) & 0xFF);

	var string = integer.toString(16).toUpperCase();
	return '000000'.substring(string.length) + string;
};

convert.hex.rgb = function (args) {
	var match = args.toString(16).match(/[a-f0-9]{6}|[a-f0-9]{3}/i);
	if (!match) {
		return [0, 0, 0];
	}

	var colorString = match[0];

	if (match[0].length === 3) {
		colorString = colorString.split('').map(function (char) {
			return char + char;
		}).join('');
	}

	var integer = parseInt(colorString, 16);
	var r = (integer >> 16) & 0xFF;
	var g = (integer >> 8) & 0xFF;
	var b = integer & 0xFF;

	return [r, g, b];
};

convert.rgb.hcg = function (rgb) {
	var r = rgb[0] / 255;
	var g = rgb[1] / 255;
	var b = rgb[2] / 255;
	var max = Math.max(Math.max(r, g), b);
	var min = Math.min(Math.min(r, g), b);
	var chroma = (max - min);
	var grayscale;
	var hue;

	if (chroma < 1) {
		grayscale = min / (1 - chroma);
	} else {
		grayscale = 0;
	}

	if (chroma <= 0) {
		hue = 0;
	} else
	if (max === r) {
		hue = ((g - b) / chroma) % 6;
	} else
	if (max === g) {
		hue = 2 + (b - r) / chroma;
	} else {
		hue = 4 + (r - g) / chroma + 4;
	}

	hue /= 6;
	hue %= 1;

	return [hue * 360, chroma * 100, grayscale * 100];
};

convert.hsl.hcg = function (hsl) {
	var s = hsl[1] / 100;
	var l = hsl[2] / 100;
	var c = 1;
	var f = 0;

	if (l < 0.5) {
		c = 2.0 * s * l;
	} else {
		c = 2.0 * s * (1.0 - l);
	}

	if (c < 1.0) {
		f = (l - 0.5 * c) / (1.0 - c);
	}

	return [hsl[0], c * 100, f * 100];
};

convert.hsv.hcg = function (hsv) {
	var s = hsv[1] / 100;
	var v = hsv[2] / 100;

	var c = s * v;
	var f = 0;

	if (c < 1.0) {
		f = (v - c) / (1 - c);
	}

	return [hsv[0], c * 100, f * 100];
};

convert.hcg.rgb = function (hcg) {
	var h = hcg[0] / 360;
	var c = hcg[1] / 100;
	var g = hcg[2] / 100;

	if (c === 0.0) {
		return [g * 255, g * 255, g * 255];
	}

	var pure = [0, 0, 0];
	var hi = (h % 1) * 6;
	var v = hi % 1;
	var w = 1 - v;
	var mg = 0;

	switch (Math.floor(hi)) {
		case 0:
			pure[0] = 1; pure[1] = v; pure[2] = 0; break;
		case 1:
			pure[0] = w; pure[1] = 1; pure[2] = 0; break;
		case 2:
			pure[0] = 0; pure[1] = 1; pure[2] = v; break;
		case 3:
			pure[0] = 0; pure[1] = w; pure[2] = 1; break;
		case 4:
			pure[0] = v; pure[1] = 0; pure[2] = 1; break;
		default:
			pure[0] = 1; pure[1] = 0; pure[2] = w;
	}

	mg = (1.0 - c) * g;

	return [
		(c * pure[0] + mg) * 255,
		(c * pure[1] + mg) * 255,
		(c * pure[2] + mg) * 255
	];
};

convert.hcg.hsv = function (hcg) {
	var c = hcg[1] / 100;
	var g = hcg[2] / 100;

	var v = c + g * (1.0 - c);
	var f = 0;

	if (v > 0.0) {
		f = c / v;
	}

	return [hcg[0], f * 100, v * 100];
};

convert.hcg.hsl = function (hcg) {
	var c = hcg[1] / 100;
	var g = hcg[2] / 100;

	var l = g * (1.0 - c) + 0.5 * c;
	var s = 0;

	if (l > 0.0 && l < 0.5) {
		s = c / (2 * l);
	} else
	if (l >= 0.5 && l < 1.0) {
		s = c / (2 * (1 - l));
	}

	return [hcg[0], s * 100, l * 100];
};

convert.hcg.hwb = function (hcg) {
	var c = hcg[1] / 100;
	var g = hcg[2] / 100;
	var v = c + g * (1.0 - c);
	return [hcg[0], (v - c) * 100, (1 - v) * 100];
};

convert.hwb.hcg = function (hwb) {
	var w = hwb[1] / 100;
	var b = hwb[2] / 100;
	var v = 1 - b;
	var c = v - w;
	var g = 0;

	if (c < 1) {
		g = (v - c) / (1 - c);
	}

	return [hwb[0], c * 100, g * 100];
};

convert.apple.rgb = function (apple) {
	return [(apple[0] / 65535) * 255, (apple[1] / 65535) * 255, (apple[2] / 65535) * 255];
};

convert.rgb.apple = function (rgb) {
	return [(rgb[0] / 255) * 65535, (rgb[1] / 255) * 65535, (rgb[2] / 255) * 65535];
};

convert.gray.rgb = function (args) {
	return [args[0] / 100 * 255, args[0] / 100 * 255, args[0] / 100 * 255];
};

convert.gray.hsl = convert.gray.hsv = function (args) {
	return [0, 0, args[0]];
};

convert.gray.hwb = function (gray) {
	return [0, 100, gray[0]];
};

convert.gray.cmyk = function (gray) {
	return [0, 0, 0, gray[0]];
};

convert.gray.lab = function (gray) {
	return [gray[0], 0, 0];
};

convert.gray.hex = function (gray) {
	var val = Math.round(gray[0] / 100 * 255) & 0xFF;
	var integer = (val << 16) + (val << 8) + val;

	var string = integer.toString(16).toUpperCase();
	return '000000'.substring(string.length) + string;
};

convert.rgb.gray = function (rgb) {
	var val = (rgb[0] + rgb[1] + rgb[2]) / 3;
	return [val / 255 * 100];
};
});

var conversions_1 = conversions.rgb;
var conversions_2 = conversions.hsl;
var conversions_3 = conversions.hsv;
var conversions_4 = conversions.hwb;
var conversions_5 = conversions.cmyk;
var conversions_6 = conversions.xyz;
var conversions_7 = conversions.lab;
var conversions_8 = conversions.lch;
var conversions_9 = conversions.hex;
var conversions_10 = conversions.keyword;
var conversions_11 = conversions.ansi16;
var conversions_12 = conversions.ansi256;
var conversions_13 = conversions.hcg;
var conversions_14 = conversions.apple;
var conversions_15 = conversions.gray;

/*
	this function routes a model to all other models.

	all functions that are routed have a property `.conversion` attached
	to the returned synthetic function. This property is an array
	of strings, each with the steps in between the 'from' and 'to'
	color models (inclusive).

	conversions that are not possible simply are not included.
*/

// https://jsperf.com/object-keys-vs-for-in-with-closure/3
var models$1 = Object.keys(conversions);

function buildGraph() {
	var graph = {};

	for (var len = models$1.length, i = 0; i < len; i++) {
		graph[models$1[i]] = {
			// http://jsperf.com/1-vs-infinity
			// micro-opt, but this is simple.
			distance: -1,
			parent: null
		};
	}

	return graph;
}

// https://en.wikipedia.org/wiki/Breadth-first_search
function deriveBFS(fromModel) {
	var graph = buildGraph();
	var queue = [fromModel]; // unshift -> queue -> pop

	graph[fromModel].distance = 0;

	while (queue.length) {
		var current = queue.pop();
		var adjacents = Object.keys(conversions[current]);

		for (var len = adjacents.length, i = 0; i < len; i++) {
			var adjacent = adjacents[i];
			var node = graph[adjacent];

			if (node.distance === -1) {
				node.distance = graph[current].distance + 1;
				node.parent = current;
				queue.unshift(adjacent);
			}
		}
	}

	return graph;
}

function link(from, to) {
	return function (args) {
		return to(from(args));
	};
}

function wrapConversion(toModel, graph) {
	var path$$1 = [graph[toModel].parent, toModel];
	var fn = conversions[graph[toModel].parent][toModel];

	var cur = graph[toModel].parent;
	while (graph[cur].parent) {
		path$$1.unshift(graph[cur].parent);
		fn = link(conversions[graph[cur].parent][cur], fn);
		cur = graph[cur].parent;
	}

	fn.conversion = path$$1;
	return fn;
}

var route = function (fromModel) {
	var graph = deriveBFS(fromModel);
	var conversion = {};

	var models = Object.keys(graph);
	for (var len = models.length, i = 0; i < len; i++) {
		var toModel = models[i];
		var node = graph[toModel];

		if (node.parent === null) {
			// no possible conversion, or this node is the source model.
			continue;
		}

		conversion[toModel] = wrapConversion(toModel, graph);
	}

	return conversion;
};

var convert = {};

var models = Object.keys(conversions);

function wrapRaw(fn) {
	var wrappedFn = function (args) {
		if (args === undefined || args === null) {
			return args;
		}

		if (arguments.length > 1) {
			args = Array.prototype.slice.call(arguments);
		}

		return fn(args);
	};

	// preserve .conversion property if there is one
	if ('conversion' in fn) {
		wrappedFn.conversion = fn.conversion;
	}

	return wrappedFn;
}

function wrapRounded(fn) {
	var wrappedFn = function (args) {
		if (args === undefined || args === null) {
			return args;
		}

		if (arguments.length > 1) {
			args = Array.prototype.slice.call(arguments);
		}

		var result = fn(args);

		// we're assuming the result is an array here.
		// see notice in conversions.js; don't use box types
		// in conversion functions.
		if (typeof result === 'object') {
			for (var len = result.length, i = 0; i < len; i++) {
				result[i] = Math.round(result[i]);
			}
		}

		return result;
	};

	// preserve .conversion property if there is one
	if ('conversion' in fn) {
		wrappedFn.conversion = fn.conversion;
	}

	return wrappedFn;
}

models.forEach(function (fromModel) {
	convert[fromModel] = {};

	Object.defineProperty(convert[fromModel], 'channels', {value: conversions[fromModel].channels});
	Object.defineProperty(convert[fromModel], 'labels', {value: conversions[fromModel].labels});

	var routes = route(fromModel);
	var routeModels = Object.keys(routes);

	routeModels.forEach(function (toModel) {
		var fn = routes[toModel];

		convert[fromModel][toModel] = wrapRounded(fn);
		convert[fromModel][toModel].raw = wrapRaw(fn);
	});
});

var colorConvert = convert;

var ansiStyles = createCommonjsModule(function (module) {
const wrapAnsi16 = (fn, offset) => function () {
	const code = fn.apply(colorConvert, arguments);
	return `\u001B[${code + offset}m`;
};

const wrapAnsi256 = (fn, offset) => function () {
	const code = fn.apply(colorConvert, arguments);
	return `\u001B[${38 + offset};5;${code}m`;
};

const wrapAnsi16m = (fn, offset) => function () {
	const rgb = fn.apply(colorConvert, arguments);
	return `\u001B[${38 + offset};2;${rgb[0]};${rgb[1]};${rgb[2]}m`;
};

function assembleStyles() {
	const codes = new Map();
	const styles = {
		modifier: {
			reset: [0, 0],
			// 21 isn't widely supported and 22 does the same thing
			bold: [1, 22],
			dim: [2, 22],
			italic: [3, 23],
			underline: [4, 24],
			inverse: [7, 27],
			hidden: [8, 28],
			strikethrough: [9, 29]
		},
		color: {
			black: [30, 39],
			red: [31, 39],
			green: [32, 39],
			yellow: [33, 39],
			blue: [34, 39],
			magenta: [35, 39],
			cyan: [36, 39],
			white: [37, 39],
			gray: [90, 39],

			// Bright color
			redBright: [91, 39],
			greenBright: [92, 39],
			yellowBright: [93, 39],
			blueBright: [94, 39],
			magentaBright: [95, 39],
			cyanBright: [96, 39],
			whiteBright: [97, 39]
		},
		bgColor: {
			bgBlack: [40, 49],
			bgRed: [41, 49],
			bgGreen: [42, 49],
			bgYellow: [43, 49],
			bgBlue: [44, 49],
			bgMagenta: [45, 49],
			bgCyan: [46, 49],
			bgWhite: [47, 49],

			// Bright color
			bgBlackBright: [100, 49],
			bgRedBright: [101, 49],
			bgGreenBright: [102, 49],
			bgYellowBright: [103, 49],
			bgBlueBright: [104, 49],
			bgMagentaBright: [105, 49],
			bgCyanBright: [106, 49],
			bgWhiteBright: [107, 49]
		}
	};

	// Fix humans
	styles.color.grey = styles.color.gray;

	for (const groupName of Object.keys(styles)) {
		const group = styles[groupName];

		for (const styleName of Object.keys(group)) {
			const style = group[styleName];

			styles[styleName] = {
				open: `\u001B[${style[0]}m`,
				close: `\u001B[${style[1]}m`
			};

			group[styleName] = styles[styleName];

			codes.set(style[0], style[1]);
		}

		Object.defineProperty(styles, groupName, {
			value: group,
			enumerable: false
		});

		Object.defineProperty(styles, 'codes', {
			value: codes,
			enumerable: false
		});
	}

	const rgb2rgb = (r, g, b) => [r, g, b];

	styles.color.close = '\u001B[39m';
	styles.bgColor.close = '\u001B[49m';

	styles.color.ansi = {};
	styles.color.ansi256 = {};
	styles.color.ansi16m = {
		rgb: wrapAnsi16m(rgb2rgb, 0)
	};

	styles.bgColor.ansi = {};
	styles.bgColor.ansi256 = {};
	styles.bgColor.ansi16m = {
		rgb: wrapAnsi16m(rgb2rgb, 10)
	};

	for (const key of Object.keys(colorConvert)) {
		if (typeof colorConvert[key] !== 'object') {
			continue;
		}

		const suite = colorConvert[key];

		if ('ansi16' in suite) {
			styles.color.ansi[key] = wrapAnsi16(suite.ansi16, 0);
			styles.bgColor.ansi[key] = wrapAnsi16(suite.ansi16, 10);
		}

		if ('ansi256' in suite) {
			styles.color.ansi256[key] = wrapAnsi256(suite.ansi256, 0);
			styles.bgColor.ansi256[key] = wrapAnsi256(suite.ansi256, 10);
		}

		if ('rgb' in suite) {
			styles.color.ansi16m[key] = wrapAnsi16m(suite.rgb, 0);
			styles.bgColor.ansi16m[key] = wrapAnsi16m(suite.rgb, 10);
		}
	}

	return styles;
}

// Make the export immutable
Object.defineProperty(module, 'exports', {
	enumerable: true,
	get: assembleStyles
});
});

var hasFlag = function (flag, argv) {
	argv = argv || process.argv;

	var terminatorPos = argv.indexOf('--');
	var prefix = /^-{1,2}/.test(flag) ? '' : '--';
	var pos = argv.indexOf(prefix + flag);

	return pos !== -1 && (terminatorPos === -1 ? true : pos < terminatorPos);
};

var supportsColor = createCommonjsModule(function (module) {
const env = process.env;

const support = level => {
	if (level === 0) {
		return false;
	}

	return {
		level,
		hasBasic: true,
		has256: level >= 2,
		has16m: level >= 3
	};
};

let supportLevel = (() => {
	if (hasFlag('no-color') ||
		hasFlag('no-colors') ||
		hasFlag('color=false')) {
		return 0;
	}

	if (hasFlag('color=16m') ||
		hasFlag('color=full') ||
		hasFlag('color=truecolor')) {
		return 3;
	}

	if (hasFlag('color=256')) {
		return 2;
	}

	if (hasFlag('color') ||
		hasFlag('colors') ||
		hasFlag('color=true') ||
		hasFlag('color=always')) {
		return 1;
	}

	if (process.stdout && !process.stdout.isTTY) {
		return 0;
	}

	if (process.platform === 'win32') {
		// Node.js 7.5.0 is the first version of Node.js to include a patch to
		// libuv that enables 256 color output on Windows. Anything earlier and it
		// won't work. However, here we target Node.js 8 at minimum as it is an LTS
		// release, and Node.js 7 is not. Windows 10 build 10586 is the first Windows
		// release that supports 256 colors.
		const osRelease = os.release().split('.');
		if (
			Number(process.versions.node.split('.')[0]) >= 8 &&
			Number(osRelease[0]) >= 10 &&
			Number(osRelease[2]) >= 10586
		) {
			return 2;
		}

		return 1;
	}

	if ('CI' in env) {
		if (['TRAVIS', 'CIRCLECI', 'APPVEYOR', 'GITLAB_CI'].some(sign => sign in env) || env.CI_NAME === 'codeship') {
			return 1;
		}

		return 0;
	}

	if ('TEAMCITY_VERSION' in env) {
		return /^(9\.(0*[1-9]\d*)\.|\d{2,}\.)/.test(env.TEAMCITY_VERSION) ? 1 : 0;
	}

	if ('TERM_PROGRAM' in env) {
		const version = parseInt((env.TERM_PROGRAM_VERSION || '').split('.')[0], 10);

		switch (env.TERM_PROGRAM) {
			case 'iTerm.app':
				return version >= 3 ? 3 : 2;
			case 'Hyper':
				return 3;
			case 'Apple_Terminal':
				return 2;
			// No default
		}
	}

	if (/-256(color)?$/i.test(env.TERM)) {
		return 2;
	}

	if (/^screen|^xterm|^vt100|^rxvt|color|ansi|cygwin|linux/i.test(env.TERM)) {
		return 1;
	}

	if ('COLORTERM' in env) {
		return 1;
	}

	if (env.TERM === 'dumb') {
		return 0;
	}

	return 0;
})();

if ('FORCE_COLOR' in env) {
	supportLevel = parseInt(env.FORCE_COLOR, 10) === 0 ? 0 : (supportLevel || 1);
}

module.exports = process && support(supportLevel);
});

var templates = createCommonjsModule(function (module) {
const TEMPLATE_REGEX = /(?:\\(u[a-f\d]{4}|x[a-f\d]{2}|.))|(?:\{(~)?(\w+(?:\([^)]*\))?(?:\.\w+(?:\([^)]*\))?)*)(?:[ \t]|(?=\r?\n)))|(\})|((?:.|[\r\n\f])+?)/gi;
const STYLE_REGEX = /(?:^|\.)(\w+)(?:\(([^)]*)\))?/g;
const STRING_REGEX = /^(['"])((?:\\.|(?!\1)[^\\])*)\1$/;
const ESCAPE_REGEX = /\\(u[a-f\d]{4}|x[a-f\d]{2}|.)|([^\\])/gi;

const ESCAPES = new Map([
	['n', '\n'],
	['r', '\r'],
	['t', '\t'],
	['b', '\b'],
	['f', '\f'],
	['v', '\v'],
	['0', '\0'],
	['\\', '\\'],
	['e', '\u001B'],
	['a', '\u0007']
]);

function unescape(c) {
	if ((c[0] === 'u' && c.length === 5) || (c[0] === 'x' && c.length === 3)) {
		return String.fromCharCode(parseInt(c.slice(1), 16));
	}

	return ESCAPES.get(c) || c;
}

function parseArguments(name, args) {
	const results = [];
	const chunks = args.trim().split(/\s*,\s*/g);
	let matches;

	for (const chunk of chunks) {
		if (!isNaN(chunk)) {
			results.push(Number(chunk));
		} else if ((matches = chunk.match(STRING_REGEX))) {
			results.push(matches[2].replace(ESCAPE_REGEX, (m, escape, chr) => escape ? unescape(escape) : chr));
		} else {
			throw new Error(`Invalid Chalk template style argument: ${chunk} (in style '${name}')`);
		}
	}

	return results;
}

function parseStyle(style) {
	STYLE_REGEX.lastIndex = 0;

	const results = [];
	let matches;

	while ((matches = STYLE_REGEX.exec(style)) !== null) {
		const name = matches[1];

		if (matches[2]) {
			const args = parseArguments(name, matches[2]);
			results.push([name].concat(args));
		} else {
			results.push([name]);
		}
	}

	return results;
}

function buildStyle(chalk, styles) {
	const enabled = {};

	for (const layer of styles) {
		for (const style of layer.styles) {
			enabled[style[0]] = layer.inverse ? null : style.slice(1);
		}
	}

	let current = chalk;
	for (const styleName of Object.keys(enabled)) {
		if (Array.isArray(enabled[styleName])) {
			if (!(styleName in current)) {
				throw new Error(`Unknown Chalk style: ${styleName}`);
			}

			if (enabled[styleName].length > 0) {
				current = current[styleName].apply(current, enabled[styleName]);
			} else {
				current = current[styleName];
			}
		}
	}

	return current;
}

module.exports = (chalk, tmp) => {
	const styles = [];
	const chunks = [];
	let chunk = [];

	// eslint-disable-next-line max-params
	tmp.replace(TEMPLATE_REGEX, (m, escapeChar, inverse, style, close, chr) => {
		if (escapeChar) {
			chunk.push(unescape(escapeChar));
		} else if (style) {
			const str = chunk.join('');
			chunk = [];
			chunks.push(styles.length === 0 ? str : buildStyle(chalk, styles)(str));
			styles.push({inverse, styles: parseStyle(style)});
		} else if (close) {
			if (styles.length === 0) {
				throw new Error('Found extraneous } in Chalk template literal');
			}

			chunks.push(buildStyle(chalk, styles)(chunk.join('')));
			chunk = [];
			styles.pop();
		} else {
			chunk.push(chr);
		}
	});

	chunks.push(chunk.join(''));

	if (styles.length > 0) {
		const errMsg = `Chalk template literal is missing ${styles.length} closing bracket${styles.length === 1 ? '' : 's'} (\`}\`)`;
		throw new Error(errMsg);
	}

	return chunks.join('');
};
});

var chalk = createCommonjsModule(function (module) {
const isSimpleWindowsTerm = process.platform === 'win32' && !(process.env.TERM || '').toLowerCase().startsWith('xterm');

// `supportsColor.level` → `ansiStyles.color[name]` mapping
const levelMapping = ['ansi', 'ansi', 'ansi256', 'ansi16m'];

// `color-convert` models to exclude from the Chalk API due to conflicts and such
const skipModels = new Set(['gray']);

const styles = Object.create(null);

function applyOptions(obj, options) {
	options = options || {};

	// Detect level if not set manually
	const scLevel = supportsColor ? supportsColor.level : 0;
	obj.level = options.level === undefined ? scLevel : options.level;
	obj.enabled = 'enabled' in options ? options.enabled : obj.level > 0;
}

function Chalk(options) {
	// We check for this.template here since calling `chalk.constructor()`
	// by itself will have a `this` of a previously constructed chalk object
	if (!this || !(this instanceof Chalk) || this.template) {
		const chalk = {};
		applyOptions(chalk, options);

		chalk.template = function () {
			const args = [].slice.call(arguments);
			return chalkTag.apply(null, [chalk.template].concat(args));
		};

		Object.setPrototypeOf(chalk, Chalk.prototype);
		Object.setPrototypeOf(chalk.template, chalk);

		chalk.template.constructor = Chalk;

		return chalk.template;
	}

	applyOptions(this, options);
}

// Use bright blue on Windows as the normal blue color is illegible
if (isSimpleWindowsTerm) {
	ansiStyles.blue.open = '\u001B[94m';
}

for (const key of Object.keys(ansiStyles)) {
	ansiStyles[key].closeRe = new RegExp(escapeStringRegexp(ansiStyles[key].close), 'g');

	styles[key] = {
		get() {
			const codes = ansiStyles[key];
			return build.call(this, this._styles ? this._styles.concat(codes) : [codes], this._empty, key);
		}
	};
}

styles.visible = {
	get() {
		return build.call(this, this._styles || [], true, 'visible');
	}
};

ansiStyles.color.closeRe = new RegExp(escapeStringRegexp(ansiStyles.color.close), 'g');
for (const model of Object.keys(ansiStyles.color.ansi)) {
	if (skipModels.has(model)) {
		continue;
	}

	styles[model] = {
		get() {
			const level = this.level;
			return function () {
				const open = ansiStyles.color[levelMapping[level]][model].apply(null, arguments);
				const codes = {
					open,
					close: ansiStyles.color.close,
					closeRe: ansiStyles.color.closeRe
				};
				return build.call(this, this._styles ? this._styles.concat(codes) : [codes], this._empty, model);
			};
		}
	};
}

ansiStyles.bgColor.closeRe = new RegExp(escapeStringRegexp(ansiStyles.bgColor.close), 'g');
for (const model of Object.keys(ansiStyles.bgColor.ansi)) {
	if (skipModels.has(model)) {
		continue;
	}

	const bgModel = 'bg' + model[0].toUpperCase() + model.slice(1);
	styles[bgModel] = {
		get() {
			const level = this.level;
			return function () {
				const open = ansiStyles.bgColor[levelMapping[level]][model].apply(null, arguments);
				const codes = {
					open,
					close: ansiStyles.bgColor.close,
					closeRe: ansiStyles.bgColor.closeRe
				};
				return build.call(this, this._styles ? this._styles.concat(codes) : [codes], this._empty, model);
			};
		}
	};
}

const proto = Object.defineProperties(() => {}, styles);

function build(_styles, _empty, key) {
	const builder = function () {
		return applyStyle.apply(builder, arguments);
	};

	builder._styles = _styles;
	builder._empty = _empty;

	const self = this;

	Object.defineProperty(builder, 'level', {
		enumerable: true,
		get() {
			return self.level;
		},
		set(level) {
			self.level = level;
		}
	});

	Object.defineProperty(builder, 'enabled', {
		enumerable: true,
		get() {
			return self.enabled;
		},
		set(enabled) {
			self.enabled = enabled;
		}
	});

	// See below for fix regarding invisible grey/dim combination on Windows
	builder.hasGrey = this.hasGrey || key === 'gray' || key === 'grey';

	// `__proto__` is used because we must return a function, but there is
	// no way to create a function with a different prototype
	builder.__proto__ = proto; // eslint-disable-line no-proto

	return builder;
}

function applyStyle() {
	// Support varags, but simply cast to string in case there's only one arg
	const args = arguments;
	const argsLen = args.length;
	let str = String(arguments[0]);

	if (argsLen === 0) {
		return '';
	}

	if (argsLen > 1) {
		// Don't slice `arguments`, it prevents V8 optimizations
		for (let a = 1; a < argsLen; a++) {
			str += ' ' + args[a];
		}
	}

	if (!this.enabled || this.level <= 0 || !str) {
		return this._empty ? '' : str;
	}

	// Turns out that on Windows dimmed gray text becomes invisible in cmd.exe,
	// see https://github.com/chalk/chalk/issues/58
	// If we're on Windows and we're dealing with a gray color, temporarily make 'dim' a noop.
	const originalDim = ansiStyles.dim.open;
	if (isSimpleWindowsTerm && this.hasGrey) {
		ansiStyles.dim.open = '';
	}

	for (const code of this._styles.slice().reverse()) {
		// Replace any instances already present with a re-opening code
		// otherwise only the part of the string until said closing code
		// will be colored, and the rest will simply be 'plain'.
		str = code.open + str.replace(code.closeRe, code.open) + code.close;

		// Close the styling before a linebreak and reopen
		// after next line to fix a bleed issue on macOS
		// https://github.com/chalk/chalk/pull/92
		str = str.replace(/\r?\n/g, `${code.close}$&${code.open}`);
	}

	// Reset the original `dim` if we changed it to work around the Windows dimmed gray issue
	ansiStyles.dim.open = originalDim;

	return str;
}

function chalkTag(chalk, strings) {
	if (!Array.isArray(strings)) {
		// If chalk() was called by itself or with a string,
		// return the string itself as a string.
		return [].slice.call(arguments, 1).join(' ');
	}

	const args = [].slice.call(arguments, 2);
	const parts = [strings.raw[0]];

	for (let i = 1; i < strings.length; i++) {
		parts.push(String(args[i - 1]).replace(/[{}\\]/g, '\\$&'));
		parts.push(String(strings.raw[i]));
	}

	return templates(chalk, parts.join(''));
}

Object.defineProperties(Chalk.prototype, styles);

module.exports = Chalk(); // eslint-disable-line new-cap
module.exports.supportsColor = supportsColor;
module.exports.default = module.exports; // For TypeScript
});

var chalk_1 = chalk.supportsColor;

const absolutePath = /^(?:\/|(?:[A-Za-z]:)?[\\|/])/;


function isAbsolute ( path$$1 ) {
	return absolutePath.test( path$$1 );
}

function relativeId ( id ) {
	if ( typeof process === 'undefined' || !isAbsolute( id ) ) { return id; }
	return path.relative( process.cwd(), id );
}

if ( !process.stderr.isTTY ) { chalk.enabled = false; }

// log to stderr to keep `rollup main.js > bundle.js` from breaking
const stderr = console.error.bind( console ); // eslint-disable-line no-console

function handleError ( err, recover ) {
	let description = err.message || err;
	if (err.name) { description = `${err.name}: ${description}`; }
	const message = (err.plugin ? `(${err.plugin} plugin) ${description}` : description) || err;

	stderr( chalk.bold.red( `[!] ${chalk.bold( message )}` ) );

	// TODO should this be "err.url || (err.file && err.loc.file) || err.id"?
	if ( err.url ) {
		stderr( chalk.cyan( err.url ) );
	}

	if ( err.loc ) {
		stderr( `${relativeId( err.loc.file || err.id )} (${err.loc.line}:${err.loc.column})` );
	} else if ( err.id ) {
		stderr( relativeId( err.id ) );
	}

	if ( err.frame ) {
		stderr( chalk.dim( err.frame ) );
	} else if ( err.stack ) {
		stderr( chalk.dim( err.stack ) );
	}

	stderr( '' );

	if ( !recover ) { process.exit( 1 ); }
}

function ensureArray ( thing ) {
	if ( Array.isArray( thing ) ) { return thing; }
	if ( thing == undefined ) { return []; }
	return [ thing ];
}

function deprecateOptions ( options ) {
	const deprecations = [];

	if ( options.entry ) {
		deprecations.push( { old: 'entry', new: 'input' } );
		options.input = options.entry; // don't delete, as plugins sometimes depend on this...
	}

	if ( options.moduleName ) {
		deprecations.push( { old: 'moduleName', new: 'output.name' } );
		options.name = options.moduleName;
		delete options.moduleName;
	}

	if ( options.sourceMap ) {
		deprecations.push( { old: 'sourceMap', new: 'output.sourcemap' } );
		options.sourcemap = options.sourceMap;
		delete options.sourceMap;
	}

	if ( options.sourceMapFile ) {
		deprecations.push( { old: 'sourceMapFile', new: 'output.sourcemapFile' } );
		options.sourcemapFile = options.sourceMapFile;
		delete options.sourceMapFile;
	}

	if ( options.useStrict ) {
		deprecations.push( { old: 'useStrict', new: 'output.strict' } );
		options.strict = options.useStrict;
		delete options.useStrict;
	}

	if ( options.targets ) {
		deprecations.push( { old: 'targets', new: 'output' } );
		options.output = options.targets;
		delete options.targets;

		let deprecatedDest = false;
		options.output.forEach( output => {
			if ( output.dest ) {
				if ( !deprecatedDest ) {
					deprecations.push( { old: 'targets.dest', new: 'output.file' } );
					deprecatedDest = true;
				}
				output.file = output.dest;
				delete output.dest;
			}
		} );
	} else if ( options.dest ) {
		deprecations.push( { old: 'dest', new: 'output.file' } );
		options.output = {
			file: options.dest,
			format: options.format
		};
		delete options.dest;
	}

	if ( options.format ) {
		if ( !options.output ) { options.output = { format: options.format }; }
		deprecations.push( { old: 'format', new: 'output.format' } );
		delete options.format;
	}

	if ( options.pureExternalModules ) {
		deprecations.push( { old: 'pureExternalModules', new: 'treeshake.pureExternalModules' } );
		if ( options.treeshake === undefined ) {
			options.treeshake = {};
		}
		if ( options.treeshake ) {
			options.treeshake.pureExternalModules = options.pureExternalModules;
		}
		delete options.pureExternalModules;
	}

	return deprecations;
}

function normalizeObjectOptionValue ( optionValue ) {
	if ( !optionValue ) {
		return optionValue;
	}
	if ( typeof optionValue !== 'object' ) {
		return {};
	}
	return optionValue;
}

function mergeOptions ( config, command ) {
	const deprecations = deprecate( config, command );

	function getOption ( name ) {
		return command[ name ] !== undefined ? command[ name ] : config[ name ];
	}

	function getObjectOption ( name ) {
		const commandOption = normalizeObjectOptionValue( command[ name ] );
		const configOption = normalizeObjectOptionValue( config[ name ] );
		if ( commandOption !== undefined ) {
			return commandOption && configOption
				? Object.assign( {}, configOption, commandOption )
				: commandOption;
		}
		return configOption;
	}

	const inputOptions = {
		input: getOption( 'input' ),
		legacy: getOption( 'legacy' ),
		treeshake: getObjectOption( 'treeshake' ),
		acorn: config.acorn,
		context: config.context,
		moduleContext: config.moduleContext,
		plugins: config.plugins,
		onwarn: config.onwarn,
		watch: config.watch
	};

	// legacy, to ensure e.g. commonjs plugin still works
	inputOptions.entry = inputOptions.input;

	const commandExternal = ( command.external || '' ).split( ',' );
	const configExternal = config.external;

	if ( command.globals ) {
		const globals = Object.create( null );

		command.globals.split( ',' ).forEach( str => {
			const names = str.split( ':' );
			globals[ names[ 0 ] ] = names[ 1 ];

			// Add missing Module IDs to external.
			if ( commandExternal.indexOf( names[ 0 ] ) === -1 ) {
				commandExternal.push( names[ 0 ] );
			}
		} );

		command.globals = globals;
	}

	if ( typeof configExternal === 'function' ) {
		inputOptions.external = id => {
			return configExternal( id ) || ~commandExternal.indexOf( id );
		};
	} else {
		inputOptions.external = ( configExternal || [] ).concat( commandExternal );
	}

	if ( command.silent ) {
		inputOptions.onwarn = () => {};
	}

	const baseOutputOptions = {
		extend: getOption( 'extend' ),
		amd: Object.assign( {}, config.amd, command.amd ),
		banner: getOption( 'banner' ),
		footer: getOption( 'footer' ),
		intro: getOption( 'intro' ),
		outro: getOption( 'outro' ),
		sourcemap: getOption( 'sourcemap' ),
		name: getOption( 'name' ),
		globals: getOption( 'globals' ),
		interop: getOption( 'interop' ),
		legacy: getOption( 'legacy' ),
		freeze: getOption( 'freeze' ),
		indent: getOption( 'indent' ),
		strict: getOption( 'strict' ),
		noConflict: getOption( 'noConflict' ),
		paths: getOption( 'paths' )
	};

	let mergedOutputOptions;
	if ( Array.isArray( config.output ) ) {
		mergedOutputOptions = config.output.map( ( output ) => Object.assign( {}, output, command.output ) );
	} else if ( config.output && command.output ) {
		mergedOutputOptions = [ Object.assign( {}, config.output, command.output ) ];
	} else {
		mergedOutputOptions = (command.output || config.output) ?
			ensureArray( command.output || config.output ) :
			[ {
				file: command.output ? command.output.file : null,
				format: command.output ? command.output.format : null
			} ];
	}

	const outputOptions = mergedOutputOptions.map( output => {
		return Object.assign( {}, baseOutputOptions, output );
	} );

	return { inputOptions, outputOptions, deprecations };
}

function deprecate ( config, command ) {
	const deprecations = [];

	// CLI
	if ( command.id ) {
		deprecations.push( {
			old: '-u/--id',
			new: '--amd.id'
		} );
		(command.amd || (command.amd = {})).id = command.id;
	}

	if ( typeof command.output === 'string' ) {
		deprecations.push( {
			old: '--output',
			new: '--output.file'
		} );
		command.output = { file: command.output };
	}

	if ( command.format ) {
		deprecations.push( {
			old: '--format',
			new: '--output.format'
		} );
		(command.output || (command.output = {})).format = command.format;
	}

	// config file
	deprecations.push.apply( deprecations, deprecateOptions( config ) );
	return deprecations;
}

function batchWarnings () {
	let allWarnings = new Map();
	let count = 0;

	return {
		get count() {
			return count;
		},

		add: warning => {
			if ( typeof warning === 'string' ) {
				warning = { code: 'UNKNOWN', message: warning };
			}

			if ( warning.code in immediateHandlers ) {
				immediateHandlers[ warning.code ]( warning );
				return;
			}

			if ( !allWarnings.has( warning.code ) ) { allWarnings.set( warning.code, [] ); }
			allWarnings.get( warning.code ).push( warning );

			count += 1;
		},

		flush: () => {
			if ( count === 0 ) { return; }

			const codes = Array.from( allWarnings.keys() )
				.sort( ( a, b ) => {
					if ( deferredHandlers[a] && deferredHandlers[b] ) {
						return deferredHandlers[a].priority - deferredHandlers[b].priority;
					}

					if ( deferredHandlers[a] ) { return -1; }
					if ( deferredHandlers[b] ) { return 1; }
					return allWarnings.get( b ).length - allWarnings.get( a ).length;
				});

			codes.forEach( code => {
				const handler = deferredHandlers[ code ];
				const warnings = allWarnings.get( code );

				if ( handler ) {
					handler.fn( warnings );
				} else {
					warnings.forEach( warning => {
						stderr( `${chalk.bold.yellow('(!)')} ${chalk.bold.yellow( warning.message )}` );

						if ( warning.url ) { info( warning.url ); }

						const id = warning.loc && warning.loc.file || warning.id;
						if ( id ) {
							const loc = warning.loc ?
								`${relativeId( id )}: (${warning.loc.line}:${warning.loc.column})` :
								relativeId( id );

							stderr( chalk.bold( relativeId( loc ) ) );
						}

						if ( warning.frame ) { info( warning.frame ); }
					});
				}
			});

			allWarnings = new Map();
			count = 0;
		}
	};
}

const immediateHandlers = {
	DEPRECATED_OPTIONS: warning => {
		title( `Some options have been renamed` );
		info( `https://gist.github.com/Rich-Harris/d472c50732dab03efeb37472b08a3f32` );
		warning.deprecations.forEach(option => {
			stderr( `${chalk.bold(option.old)} is now ${option.new}` );
		});
	},

	MISSING_NODE_BUILTINS: warning => {
		title( `Missing shims for Node.js built-ins` );

		const detail = warning.modules.length === 1 ?
			`'${warning.modules[0]}'` :
			`${warning.modules.slice( 0, -1 ).map( name => `'${name}'` ).join( ', ' )} and '${warning.modules.slice( -1 )}'`;
		stderr( `Creating a browser bundle that depends on ${detail}. You might need to include https://www.npmjs.com/package/rollup-plugin-node-builtins` );
	},

	MIXED_EXPORTS: () => {
		title( 'Mixing named and default exports' );
		stderr( `Consumers of your bundle will have to use bundle['default'] to access the default export, which may not be what you want. Use \`exports: 'named'\` to disable this warning` );
	},

	EMPTY_BUNDLE: () => {
		title( `Generated an empty bundle` );
	}
};

// TODO select sensible priorities
const deferredHandlers = {
	UNUSED_EXTERNAL_IMPORT: {
		priority: 1,
		fn: warnings => {
			title( 'Unused external imports' );
			warnings.forEach( warning => {
				stderr( `${warning.names} imported from external module '${warning.source}' but never used` );
			});
		}
	},

	UNRESOLVED_IMPORT: {
		priority: 1,
		fn: warnings => {
			title( 'Unresolved dependencies' );
			info( 'https://github.com/rollup/rollup/wiki/Troubleshooting#treating-module-as-external-dependency' );

			const dependencies = new Map();
			warnings.forEach( warning => {
				if ( !dependencies.has( warning.source ) ) { dependencies.set( warning.source, [] ); }
				dependencies.get( warning.source ).push( warning.importer );
			});

			Array.from( dependencies.keys() ).forEach( dependency => {
				const importers = dependencies.get( dependency );
				stderr( `${chalk.bold( dependency )} (imported by ${importers.join( ', ' )})` );
			});
		}
	},

	MISSING_EXPORT: {
		priority: 1,
		fn: warnings => {
			title( 'Missing exports' );
			info( 'https://github.com/rollup/rollup/wiki/Troubleshooting#name-is-not-exported-by-module' );

			warnings.forEach( warning => {
				stderr( chalk.bold( warning.importer ) );
				stderr( `${warning.missing} is not exported by ${warning.exporter}` );
				stderr( chalk.grey( warning.frame ) );
			});
		}
	},

	THIS_IS_UNDEFINED: {
		priority: 1,
		fn: warnings => {
			title( '`this` has been rewritten to `undefined`' );
			info( 'https://github.com/rollup/rollup/wiki/Troubleshooting#this-is-undefined' );
			showTruncatedWarnings(warnings);
		}
	},

	EVAL: {
		priority: 1,
		fn: warnings => {
			title( 'Use of eval is strongly discouraged' );
			info( 'https://github.com/rollup/rollup/wiki/Troubleshooting#avoiding-eval' );
			showTruncatedWarnings(warnings);
		}
	},

	NON_EXISTENT_EXPORT: {
		priority: 1,
		fn: warnings => {
			title( `Import of non-existent ${warnings.length > 1 ? 'exports' : 'export'}` );
			showTruncatedWarnings(warnings);
		}
	},

	NAMESPACE_CONFLICT: {
		priority: 1,
		fn: warnings => {
			title( `Conflicting re-exports` );
			warnings.forEach(warning => {
				stderr( `${chalk.bold(relativeId(warning.reexporter))} re-exports '${warning.name}' from both ${relativeId(warning.sources[0])} and ${relativeId(warning.sources[1])} (will be ignored)` );
			});
		}
	},

	MISSING_GLOBAL_NAME: {
		priority: 1,
		fn: warnings => {
			title( `Missing global variable ${warnings.length > 1 ? 'names' : 'name'}` );
			stderr( `Use options.globals to specify browser global variable names corresponding to external modules` );
			warnings.forEach(warning => {
				stderr(`${chalk.bold(warning.source)} (guessing '${warning.guess}')`);
			});
		}
	},

	SOURCEMAP_BROKEN: {
		priority: 1,
		fn: warnings => {
			title( `Broken sourcemap` );
			info( 'https://github.com/rollup/rollup/wiki/Troubleshooting#sourcemap-is-likely-to-be-incorrect' );

			const plugins = Array.from( new Set( warnings.map( w => w.plugin ).filter( Boolean ) ) );
			const detail = plugins.length === 0 ? '' : plugins.length > 1 ?
				` (such as ${plugins.slice(0, -1).map(p => `'${p}'`).join(', ')} and '${plugins.slice(-1)}')` :
				` (such as '${plugins[0]}')`;

			stderr( `Plugins that transform code${detail} should generate accompanying sourcemaps` );
		}
	},

	PLUGIN_WARNING: {
		priority: 1,
		fn: warnings => {
			const nestedByPlugin = nest(warnings, 'plugin');

			nestedByPlugin.forEach((ref) => {
				var plugin = ref.key;
				var items = ref.items;

				const nestedByMessage = nest(items, 'message');

				let lastUrl;

				nestedByMessage.forEach((ref) => {
					var message = ref.key;
					var items = ref.items;

					title( `${plugin} plugin: ${message}` );
					items.forEach(warning => {
						if ( warning.url !== lastUrl ) { info( lastUrl = warning.url ); }

						const loc = warning.loc ?
							`${relativeId( warning.id )}: (${warning.loc.line}:${warning.loc.column})` :
							relativeId( warning.id );

						stderr( chalk.bold( relativeId( loc ) ) );
						if ( warning.frame ) { info( warning.frame ); }
					});
				});
			});
		}
	}
};

function title ( str ) {
	stderr( `${chalk.bold.yellow('(!)')} ${chalk.bold.yellow( str )}` );
}

function info ( url ) {
	stderr( chalk.grey( url ) );
}

function nest(array, prop) {
	const nested = [];
	const lookup = new Map();

	array.forEach(item => {
		const key = item[prop];
		if (!lookup.has(key)) {
			lookup.set(key, {
				key,
				items: []
			});

			nested.push(lookup.get(key));
		}

		lookup.get(key).items.push(item);
	});

	return nested;
}

function showTruncatedWarnings(warnings) {
	const nestedByModule = nest(warnings, 'id');

	const sliced = nestedByModule.length > 5 ? nestedByModule.slice(0, 3) : nestedByModule;
	sliced.forEach((ref) => {
		var id = ref.key;
		var items = ref.items;

		stderr( chalk.bold( relativeId( id ) ) );
		stderr( chalk.grey( items[0].frame ) );

		if ( items.length > 1 ) {
			stderr( `...and ${items.length - 1} other ${items.length > 2 ? 'occurrences' : 'occurrence'}` );
		}
	});

	if ( nestedByModule.length > sliced.length ) {
		stderr( `\n...and ${nestedByModule.length - sliced.length} other files` );
	}
}

var integerToChar = {};

'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='.split( '' ).forEach( function ( char, i ) {
	integerToChar[ i ] = char;
});



function encode ( value ) {
	var result;

	if ( typeof value === 'number' ) {
		result = encodeInteger( value );
	} else {
		result = '';
		for ( var i = 0; i < value.length; i += 1 ) {
			result += encodeInteger( value[i] );
		}
	}

	return result;
}

function encodeInteger ( num ) {
	var result = '';

	if ( num < 0 ) {
		num = ( -num << 1 ) | 1;
	} else {
		num <<= 1;
	}

	do {
		var clamped = num & 31;
		num >>= 5;

		if ( num > 0 ) {
			clamped |= 32;
		}

		result += integerToChar[ clamped ];
	} while ( num > 0 );

	return result;
}

function Chunk ( start, end, content ) {
	this.start = start;
	this.end = end;
	this.original = content;

	this.intro = '';
	this.outro = '';

	this.content = content;
	this.storeName = false;
	this.edited = false;

	// we make these non-enumerable, for sanity while debugging
	Object.defineProperties( this, {
		previous: { writable: true, value: null },
		next: { writable: true, value: null }
	});
}

Chunk.prototype = {
	appendLeft: function appendLeft ( content ) {
		this.outro += content;
	},

	appendRight: function appendRight ( content ) {
		this.intro = this.intro + content;
	},

	clone: function clone () {
		var chunk = new Chunk( this.start, this.end, this.original );

		chunk.intro = this.intro;
		chunk.outro = this.outro;
		chunk.content = this.content;
		chunk.storeName = this.storeName;
		chunk.edited = this.edited;

		return chunk;
	},

	contains: function contains ( index ) {
		return this.start < index && index < this.end;
	},

	eachNext: function eachNext ( fn ) {
		var chunk = this;
		while ( chunk ) {
			fn( chunk );
			chunk = chunk.next;
		}
	},

	eachPrevious: function eachPrevious ( fn ) {
		var chunk = this;
		while ( chunk ) {
			fn( chunk );
			chunk = chunk.previous;
		}
	},

	edit: function edit ( content, storeName, contentOnly ) {
		this.content = content;
		if ( !contentOnly ) {
			this.intro = '';
			this.outro = '';
		}
		this.storeName = storeName;

		this.edited = true;

		return this;
	},

	prependLeft: function prependLeft ( content ) {
		this.outro = content + this.outro;
	},

	prependRight: function prependRight ( content ) {
		this.intro = content + this.intro;
	},

	split: function split ( index ) {
		var sliceIndex = index - this.start;

		var originalBefore = this.original.slice( 0, sliceIndex );
		var originalAfter = this.original.slice( sliceIndex );

		this.original = originalBefore;

		var newChunk = new Chunk( index, this.end, originalAfter );
		newChunk.outro = this.outro;
		this.outro = '';

		this.end = index;

		if ( this.edited ) {
			// TODO is this block necessary?...
			newChunk.edit( '', false );
			this.content = '';
		} else {
			this.content = originalBefore;
		}

		newChunk.next = this.next;
		if ( newChunk.next ) { newChunk.next.previous = newChunk; }
		newChunk.previous = this;
		this.next = newChunk;

		return newChunk;
	},

	toString: function toString () {
		return this.intro + this.content + this.outro;
	},

	trimEnd: function trimEnd ( rx ) {
		this.outro = this.outro.replace( rx, '' );
		if ( this.outro.length ) { return true; }

		var trimmed = this.content.replace( rx, '' );

		if ( trimmed.length ) {
			if ( trimmed !== this.content ) {
				this.split( this.start + trimmed.length ).edit( '', false );
			}

			return true;
		} else {
			this.edit( '', false );

			this.intro = this.intro.replace( rx, '' );
			if ( this.intro.length ) { return true; }
		}
	},

	trimStart: function trimStart ( rx ) {
		this.intro = this.intro.replace( rx, '' );
		if ( this.intro.length ) { return true; }

		var trimmed = this.content.replace( rx, '' );

		if ( trimmed.length ) {
			if ( trimmed !== this.content ) {
				this.split( this.end - trimmed.length );
				this.edit( '', false );
			}

			return true;
		} else {
			this.edit( '', false );

			this.outro = this.outro.replace( rx, '' );
			if ( this.outro.length ) { return true; }
		}
	}
};

var _btoa;

if ( typeof window !== 'undefined' && typeof window.btoa === 'function' ) {
	_btoa = window.btoa;
} else if ( typeof Buffer === 'function' ) {
	_btoa = function (str) { return new Buffer( str ).toString( 'base64' ); };
} else {
	_btoa = function () {
		throw new Error( 'Unsupported environment: `window.btoa` or `Buffer` should be supported.' );
	};
}

var btoa = _btoa;

function SourceMap ( properties ) {
	this.version = 3;

	this.file           = properties.file;
	this.sources        = properties.sources;
	this.sourcesContent = properties.sourcesContent;
	this.names          = properties.names;
	this.mappings       = properties.mappings;
}

SourceMap.prototype = {
	toString: function toString () {
		return JSON.stringify( this );
	},

	toUrl: function toUrl () {
		return 'data:application/json;charset=utf-8;base64,' + btoa( this.toString() );
	}
};

function guessIndent ( code ) {
	var lines = code.split( '\n' );

	var tabbed = lines.filter( function (line) { return /^\t+/.test( line ); } );
	var spaced = lines.filter( function (line) { return /^ {2,}/.test( line ); } );

	if ( tabbed.length === 0 && spaced.length === 0 ) {
		return null;
	}

	// More lines tabbed than spaced? Assume tabs, and
	// default to tabs in the case of a tie (or nothing
	// to go on)
	if ( tabbed.length >= spaced.length ) {
		return '\t';
	}

	// Otherwise, we need to guess the multiple
	var min = spaced.reduce( function ( previous, current ) {
		var numSpaces = /^ +/.exec( current )[0].length;
		return Math.min( numSpaces, previous );
	}, Infinity );

	return new Array( min + 1 ).join( ' ' );
}

function getRelativePath ( from, to ) {
	var fromParts = from.split( /[\/\\]/ );
	var toParts = to.split( /[\/\\]/ );

	fromParts.pop(); // get dirname

	while ( fromParts[0] === toParts[0] ) {
		fromParts.shift();
		toParts.shift();
	}

	if ( fromParts.length ) {
		var i = fromParts.length;
		while ( i-- ) { fromParts[i] = '..'; }
	}

	return fromParts.concat( toParts ).join( '/' );
}

var toString$1 = Object.prototype.toString;

function isObject ( thing ) {
	return toString$1.call( thing ) === '[object Object]';
}

function getLocator ( source ) {
	var originalLines = source.split( '\n' );

	var start = 0;
	var lineRanges = originalLines.map( function ( line, i ) {
		var end = start + line.length + 1;
		var range = { start: start, end: end, line: i };

		start = end;
		return range;
	});

	var i = 0;

	function rangeContains ( range, index ) {
		return range.start <= index && index < range.end;
	}

	function getLocation ( range, index ) {
		return { line: range.line, column: index - range.start };
	}

	return function locate ( index ) {
		var range = lineRanges[i];

		var d = index >= range.end ? 1 : -1;

		while ( range ) {
			if ( rangeContains( range, index ) ) { return getLocation( range, index ); }

			i += d;
			range = lineRanges[i];
		}
	};
}

function Mappings ( hires ) {
	var this$1 = this;

	var offsets = {
		generatedCodeColumn: 0,
		sourceIndex: 0,
		sourceCodeLine: 0,
		sourceCodeColumn: 0,
		sourceCodeName: 0
	};

	var generatedCodeLine = 0;
	var generatedCodeColumn = 0;

	this.raw = [];
	var rawSegments = this.raw[ generatedCodeLine ] = [];

	var pending = null;

	this.addEdit = function ( sourceIndex, content, original, loc, nameIndex ) {
		if ( content.length ) {
			rawSegments.push([
				generatedCodeColumn,
				sourceIndex,
				loc.line,
				loc.column,
				nameIndex ]);
		} else if ( pending ) {
			rawSegments.push( pending );
		}

		this$1.advance( content );
		pending = null;
	};

	this.addUneditedChunk = function ( sourceIndex, chunk, original, loc, sourcemapLocations ) {
		var originalCharIndex = chunk.start;
		var first = true;

		while ( originalCharIndex < chunk.end ) {
			if ( hires || first || sourcemapLocations[ originalCharIndex ] ) {
				rawSegments.push([
					generatedCodeColumn,
					sourceIndex,
					loc.line,
					loc.column,
					-1
				]);
			}

			if ( original[ originalCharIndex ] === '\n' ) {
				loc.line += 1;
				loc.column = 0;
				generatedCodeLine += 1;
				this$1.raw[ generatedCodeLine ] = rawSegments = [];
				generatedCodeColumn = 0;
			} else {
				loc.column += 1;
				generatedCodeColumn += 1;
			}

			originalCharIndex += 1;
			first = false;
		}

		pending = [
			generatedCodeColumn,
			sourceIndex,
			loc.line,
			loc.column,
			-1 ];
	};

	this.advance = function (str) {
		if ( !str ) { return; }

		var lines = str.split( '\n' );
		var lastLine = lines.pop();

		if ( lines.length ) {
			generatedCodeLine += lines.length;
			this$1.raw[ generatedCodeLine ] = rawSegments = [];
			generatedCodeColumn = lastLine.length;
		} else {
			generatedCodeColumn += lastLine.length;
		}
	};

	this.encode = function () {
		return this$1.raw.map( function (segments) {
			var generatedCodeColumn = 0;

			return segments.map( function (segment) {
				var arr = [
					segment[0] - generatedCodeColumn,
					segment[1] - offsets.sourceIndex,
					segment[2] - offsets.sourceCodeLine,
					segment[3] - offsets.sourceCodeColumn
				];

				generatedCodeColumn = segment[0];
				offsets.sourceIndex = segment[1];
				offsets.sourceCodeLine = segment[2];
				offsets.sourceCodeColumn = segment[3];

				if ( ~segment[4] ) {
					arr.push( segment[4] - offsets.sourceCodeName );
					offsets.sourceCodeName = segment[4];
				}

				return encode( arr );
			}).join( ',' );
		}).join( ';' );
	};
}

var warned = {
	insertLeft: false,
	insertRight: false,
	storeName: false
};

function MagicString$1 ( string, options ) {
	if ( options === void 0 ) { options = {}; }

	var chunk = new Chunk( 0, string.length, string );

	Object.defineProperties( this, {
		original:              { writable: true, value: string },
		outro:                 { writable: true, value: '' },
		intro:                 { writable: true, value: '' },
		firstChunk:            { writable: true, value: chunk },
		lastChunk:             { writable: true, value: chunk },
		lastSearchedChunk:     { writable: true, value: chunk },
		byStart:               { writable: true, value: {} },
		byEnd:                 { writable: true, value: {} },
		filename:              { writable: true, value: options.filename },
		indentExclusionRanges: { writable: true, value: options.indentExclusionRanges },
		sourcemapLocations:    { writable: true, value: {} },
		storedNames:           { writable: true, value: {} },
		indentStr:             { writable: true, value: guessIndent( string ) }
	});

	this.byStart[ 0 ] = chunk;
	this.byEnd[ string.length ] = chunk;
}

MagicString$1.prototype = {
	addSourcemapLocation: function addSourcemapLocation ( char ) {
		this.sourcemapLocations[ char ] = true;
	},

	append: function append ( content ) {
		if ( typeof content !== 'string' ) { throw new TypeError( 'outro content must be a string' ); }

		this.outro += content;
		return this;
	},

	appendLeft: function appendLeft ( index, content ) {
		if ( typeof content !== 'string' ) { throw new TypeError( 'inserted content must be a string' ); }

		this._split( index );

		var chunk = this.byEnd[ index ];

		if ( chunk ) {
			chunk.appendLeft( content );
		} else {
			this.intro += content;
		}

		return this;
	},

	appendRight: function appendRight ( index, content ) {
		if ( typeof content !== 'string' ) { throw new TypeError( 'inserted content must be a string' ); }

		this._split( index );

		var chunk = this.byStart[ index ];

		if ( chunk ) {
			chunk.appendRight( content );
		} else {
			this.outro += content;
		}

		return this;
	},

	clone: function clone () {
		var cloned = new MagicString$1( this.original, { filename: this.filename });

		var originalChunk = this.firstChunk;
		var clonedChunk = cloned.firstChunk = cloned.lastSearchedChunk = originalChunk.clone();

		while ( originalChunk ) {
			cloned.byStart[ clonedChunk.start ] = clonedChunk;
			cloned.byEnd[ clonedChunk.end ] = clonedChunk;

			var nextOriginalChunk = originalChunk.next;
			var nextClonedChunk = nextOriginalChunk && nextOriginalChunk.clone();

			if ( nextClonedChunk ) {
				clonedChunk.next = nextClonedChunk;
				nextClonedChunk.previous = clonedChunk;

				clonedChunk = nextClonedChunk;
			}

			originalChunk = nextOriginalChunk;
		}

		cloned.lastChunk = clonedChunk;

		if ( this.indentExclusionRanges ) {
			cloned.indentExclusionRanges = this.indentExclusionRanges.slice();
		}

		Object.keys( this.sourcemapLocations ).forEach( function (loc) {
			cloned.sourcemapLocations[ loc ] = true;
		});

		return cloned;
	},

	generateMap: function generateMap ( options ) {
		var this$1 = this;

		options = options || {};

		var sourceIndex = 0;
		var names = Object.keys( this.storedNames );
		var mappings = new Mappings( options.hires );

		var locate = getLocator( this.original );

		if ( this.intro ) {
			mappings.advance( this.intro );
		}

		this.firstChunk.eachNext( function (chunk) {
			var loc = locate( chunk.start );

			if ( chunk.intro.length ) { mappings.advance( chunk.intro ); }

			if ( chunk.edited ) {
				mappings.addEdit( sourceIndex, chunk.content, chunk.original, loc, chunk.storeName ? names.indexOf( chunk.original ) : -1 );
			} else {
				mappings.addUneditedChunk( sourceIndex, chunk, this$1.original, loc, this$1.sourcemapLocations );
			}

			if ( chunk.outro.length ) { mappings.advance( chunk.outro ); }
		});

		var map = new SourceMap({
			file: ( options.file ? options.file.split( /[\/\\]/ ).pop() : null ),
			sources: [ options.source ? getRelativePath( options.file || '', options.source ) : null ],
			sourcesContent: options.includeContent ? [ this.original ] : [ null ],
			names: names,
			mappings: mappings.encode()
		});
		return map;
	},

	getIndentString: function getIndentString () {
		return this.indentStr === null ? '\t' : this.indentStr;
	},

	indent: function indent ( indentStr, options ) {
		var this$1 = this;

		var pattern = /^[^\r\n]/gm;

		if ( isObject( indentStr ) ) {
			options = indentStr;
			indentStr = undefined;
		}

		indentStr = indentStr !== undefined ? indentStr : ( this.indentStr || '\t' );

		if ( indentStr === '' ) { return this; } // noop

		options = options || {};

		// Process exclusion ranges
		var isExcluded = {};

		if ( options.exclude ) {
			var exclusions = typeof options.exclude[0] === 'number' ? [ options.exclude ] : options.exclude;
			exclusions.forEach( function (exclusion) {
				for ( var i = exclusion[0]; i < exclusion[1]; i += 1 ) {
					isExcluded[i] = true;
				}
			});
		}

		var shouldIndentNextCharacter = options.indentStart !== false;
		var replacer = function (match) {
			if ( shouldIndentNextCharacter ) { return ("" + indentStr + match); }
			shouldIndentNextCharacter = true;
			return match;
		};

		this.intro = this.intro.replace( pattern, replacer );

		var charIndex = 0;

		var chunk = this.firstChunk;

		while ( chunk ) {
			var end = chunk.end;

			if ( chunk.edited ) {
				if ( !isExcluded[ charIndex ] ) {
					chunk.content = chunk.content.replace( pattern, replacer );

					if ( chunk.content.length ) {
						shouldIndentNextCharacter = chunk.content[ chunk.content.length - 1 ] === '\n';
					}
				}
			} else {
				charIndex = chunk.start;

				while ( charIndex < end ) {
					if ( !isExcluded[ charIndex ] ) {
						var char = this$1.original[ charIndex ];

						if ( char === '\n' ) {
							shouldIndentNextCharacter = true;
						} else if ( char !== '\r' && shouldIndentNextCharacter ) {
							shouldIndentNextCharacter = false;

							if ( charIndex === chunk.start ) {
								chunk.prependRight( indentStr );
							} else {
								this$1._splitChunk( chunk, charIndex );
								chunk = chunk.next;
								chunk.prependRight( indentStr );
							}
						}
					}

					charIndex += 1;
				}
			}

			charIndex = chunk.end;
			chunk = chunk.next;
		}

		this.outro = this.outro.replace( pattern, replacer );

		return this;
	},

	insert: function insert () {
		throw new Error( 'magicString.insert(...) is deprecated. Use prependRight(...) or appendLeft(...)' );
	},

	insertLeft: function insertLeft ( index, content ) {
		if ( !warned.insertLeft ) {
			console.warn( 'magicString.insertLeft(...) is deprecated. Use magicString.appendLeft(...) instead' ); // eslint-disable-line no-console
			warned.insertLeft = true;
		}

		return this.appendLeft( index, content );
	},

	insertRight: function insertRight ( index, content ) {
		if ( !warned.insertRight ) {
			console.warn( 'magicString.insertRight(...) is deprecated. Use magicString.prependRight(...) instead' ); // eslint-disable-line no-console
			warned.insertRight = true;
		}

		return this.prependRight( index, content );
	},

	move: function move ( start, end, index ) {
		if ( index >= start && index <= end ) { throw new Error( 'Cannot move a selection inside itself' ); }

		this._split( start );
		this._split( end );
		this._split( index );

		var first = this.byStart[ start ];
		var last = this.byEnd[ end ];

		var oldLeft = first.previous;
		var oldRight = last.next;

		var newRight = this.byStart[ index ];
		if ( !newRight && last === this.lastChunk ) { return this; }
		var newLeft = newRight ? newRight.previous : this.lastChunk;

		if ( oldLeft ) { oldLeft.next = oldRight; }
		if ( oldRight ) { oldRight.previous = oldLeft; }

		if ( newLeft ) { newLeft.next = first; }
		if ( newRight ) { newRight.previous = last; }

		if ( !first.previous ) { this.firstChunk = last.next; }
		if ( !last.next ) {
			this.lastChunk = first.previous;
			this.lastChunk.next = null;
		}

		first.previous = newLeft;
		last.next = newRight || null;

		if ( !newLeft ) { this.firstChunk = first; }
		if ( !newRight ) { this.lastChunk = last; }

		return this;
	},

	overwrite: function overwrite ( start, end, content, options ) {
		var this$1 = this;

		if ( typeof content !== 'string' ) { throw new TypeError( 'replacement content must be a string' ); }

		while ( start < 0 ) { start += this$1.original.length; }
		while ( end < 0 ) { end += this$1.original.length; }

		if ( end > this.original.length ) { throw new Error( 'end is out of bounds' ); }
		if ( start === end ) { throw new Error( 'Cannot overwrite a zero-length range – use appendLeft or prependRight instead' ); }

		this._split( start );
		this._split( end );

		if ( options === true ) {
			if ( !warned.storeName ) {
				console.warn( 'The final argument to magicString.overwrite(...) should be an options object. See https://github.com/rich-harris/magic-string' ); // eslint-disable-line no-console
				warned.storeName = true;
			}

			options = { storeName: true };
		}
		var storeName = options !== undefined ? options.storeName : false;
		var contentOnly = options !== undefined ? options.contentOnly : false;

		if ( storeName ) {
			var original = this.original.slice( start, end );
			this.storedNames[ original ] = true;
		}

		var first = this.byStart[ start ];
		var last = this.byEnd[ end ];

		if ( first ) {
			if ( end > first.end && first.next !== this.byStart[ first.end ] ) {
				throw new Error( 'Cannot overwrite across a split point' );
			}

			first.edit( content, storeName, contentOnly );

			if ( first !== last ) {
				var chunk = first.next;
				while ( chunk !== last ) {
					chunk.edit( '', false );
					chunk = chunk.next;
				}

				chunk.edit( '', false );
			}
		}

		else {
			// must be inserting at the end
			var newChunk = new Chunk( start, end, '' ).edit( content, storeName );

			// TODO last chunk in the array may not be the last chunk, if it's moved...
			last.next = newChunk;
			newChunk.previous = last;
		}

		return this;
	},

	prepend: function prepend ( content ) {
		if ( typeof content !== 'string' ) { throw new TypeError( 'outro content must be a string' ); }

		this.intro = content + this.intro;
		return this;
	},

	prependLeft: function prependLeft ( index, content ) {
		if ( typeof content !== 'string' ) { throw new TypeError( 'inserted content must be a string' ); }

		this._split( index );

		var chunk = this.byEnd[ index ];

		if ( chunk ) {
			chunk.prependLeft( content );
		} else {
			this.intro = content + this.intro;
		}

		return this;
	},

	prependRight: function prependRight ( index, content ) {
		if ( typeof content !== 'string' ) { throw new TypeError( 'inserted content must be a string' ); }

		this._split( index );

		var chunk = this.byStart[ index ];

		if ( chunk ) {
			chunk.prependRight( content );
		} else {
			this.outro = content + this.outro;
		}

		return this;
	},

	remove: function remove ( start, end ) {
		var this$1 = this;

		while ( start < 0 ) { start += this$1.original.length; }
		while ( end < 0 ) { end += this$1.original.length; }

		if ( start === end ) { return this; }

		if ( start < 0 || end > this.original.length ) { throw new Error( 'Character is out of bounds' ); }
		if ( start > end ) { throw new Error( 'end must be greater than start' ); }

		this._split( start );
		this._split( end );

		var chunk = this.byStart[ start ];

		while ( chunk ) {
			chunk.intro = '';
			chunk.outro = '';
			chunk.edit( '' );

			chunk = end > chunk.end ? this$1.byStart[ chunk.end ] : null;
		}

		return this;
	},

	slice: function slice ( start, end ) {
		var this$1 = this;
		if ( start === void 0 ) { start = 0; }
		if ( end === void 0 ) { end = this.original.length; }

		while ( start < 0 ) { start += this$1.original.length; }
		while ( end < 0 ) { end += this$1.original.length; }

		var result = '';

		// find start chunk
		var chunk = this.firstChunk;
		while ( chunk && ( chunk.start > start || chunk.end <= start ) ) {

			// found end chunk before start
			if ( chunk.start < end && chunk.end >= end ) {
				return result;
			}

			chunk = chunk.next;
		}

		if ( chunk && chunk.edited && chunk.start !== start ) { throw new Error(("Cannot use replaced character " + start + " as slice start anchor.")); }

		var startChunk = chunk;
		while ( chunk ) {
			if ( chunk.intro && ( startChunk !== chunk || chunk.start === start ) ) {
				result += chunk.intro;
			}

			var containsEnd = chunk.start < end && chunk.end >= end;
			if ( containsEnd && chunk.edited && chunk.end !== end ) { throw new Error(("Cannot use replaced character " + end + " as slice end anchor.")); }

			var sliceStart = startChunk === chunk ? start - chunk.start : 0;
			var sliceEnd = containsEnd ? chunk.content.length + end - chunk.end : chunk.content.length;

			result += chunk.content.slice( sliceStart, sliceEnd );

			if ( chunk.outro && ( !containsEnd || chunk.end === end ) ) {
				result += chunk.outro;
			}

			if ( containsEnd ) {
				break;
			}

			chunk = chunk.next;
		}

		return result;
	},

	// TODO deprecate this? not really very useful
	snip: function snip ( start, end ) {
		var clone = this.clone();
		clone.remove( 0, start );
		clone.remove( end, clone.original.length );

		return clone;
	},

	_split: function _split ( index ) {
		var this$1 = this;

		if ( this.byStart[ index ] || this.byEnd[ index ] ) { return; }

		var chunk = this.lastSearchedChunk;
		var searchForward = index > chunk.end;

		while ( true ) {
			if ( chunk.contains( index ) ) { return this$1._splitChunk( chunk, index ); }

			chunk = searchForward ?
				this$1.byStart[ chunk.end ] :
				this$1.byEnd[ chunk.start ];
		}
	},

	_splitChunk: function _splitChunk ( chunk, index ) {
		if ( chunk.edited && chunk.content.length ) { // zero-length edited chunks are a special case (overlapping replacements)
			var loc = getLocator( this.original )( index );
			throw new Error( ("Cannot split a chunk that has already been edited (" + (loc.line) + ":" + (loc.column) + " – \"" + (chunk.original) + "\")") );
		}

		var newChunk = chunk.split( index );

		this.byEnd[ index ] = chunk;
		this.byStart[ index ] = newChunk;
		this.byEnd[ newChunk.end ] = newChunk;

		if ( chunk === this.lastChunk ) { this.lastChunk = newChunk; }

		this.lastSearchedChunk = chunk;
		return true;
	},

	toString: function toString () {
		var str = this.intro;

		var chunk = this.firstChunk;
		while ( chunk ) {
			str += chunk.toString();
			chunk = chunk.next;
		}

		return str + this.outro;
	},

	trimLines: function trimLines () {
		return this.trim('[\\r\\n]');
	},

	trim: function trim ( charType ) {
		return this.trimStart( charType ).trimEnd( charType );
	},

	trimEnd: function trimEnd ( charType ) {
		var this$1 = this;

		var rx = new RegExp( ( charType || '\\s' ) + '+$' );

		this.outro = this.outro.replace( rx, '' );
		if ( this.outro.length ) { return this; }

		var chunk = this.lastChunk;

		do {
			var end = chunk.end;
			var aborted = chunk.trimEnd( rx );

			// if chunk was trimmed, we have a new lastChunk
			if ( chunk.end !== end ) {
				if ( this$1.lastChunk === chunk ) {
					this$1.lastChunk = chunk.next;
				}

				this$1.byEnd[ chunk.end ] = chunk;
				this$1.byStart[ chunk.next.start ] = chunk.next;
				this$1.byEnd[ chunk.next.end ] = chunk.next;
			}

			if ( aborted ) { return this$1; }
			chunk = chunk.previous;
		} while ( chunk );

		return this;
	},

	trimStart: function trimStart ( charType ) {
		var this$1 = this;

		var rx = new RegExp( '^' + ( charType || '\\s' ) + '+' );

		this.intro = this.intro.replace( rx, '' );
		if ( this.intro.length ) { return this; }

		var chunk = this.firstChunk;

		do {
			var end = chunk.end;
			var aborted = chunk.trimStart( rx );

			if ( chunk.end !== end ) {
				// special case...
				if ( chunk === this$1.lastChunk ) { this$1.lastChunk = chunk.next; }

				this$1.byEnd[ chunk.end ] = chunk;
				this$1.byStart[ chunk.next.start ] = chunk.next;
				this$1.byEnd[ chunk.next.end ] = chunk.next;
			}

			if ( aborted ) { return this$1; }
			chunk = chunk.next;
		} while ( chunk );

		return this;
	}
};

// Reserved word lists for various dialects of the language

var reservedWords = {
  3: "abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile",
  5: "class enum extends super const export import",
  6: "enum",
  strict: "implements interface let package private protected public static yield",
  strictBind: "eval arguments"
};

// And the keywords

var ecma5AndLessKeywords = "break case catch continue debugger default do else finally for function if return switch throw try var while with null true false instanceof typeof void delete new in this";

var keywords$1 = {
  5: ecma5AndLessKeywords,
  6: ecma5AndLessKeywords + " const class extends export import super"
};

// ## Character categories

// Big ugly regular expressions that match characters in the
// whitespace, identifier, and identifier-start categories. These
// are only applied when a character is found to actually have a
// code point above 128.
// Generated by `bin/generate-identifier-regex.js`.

var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u052f\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0-\u08b4\u08b6-\u08bd\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0af9\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c58-\u0c5a\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d54-\u0d56\u0d5f-\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f8\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1c80-\u1c88\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2118-\u211d\u2124\u2126\u2128\u212a-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309b-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fd5\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua69d\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua7ae\ua7b0-\ua7b7\ua7f7-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua8fd\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\ua9e0-\ua9e4\ua9e6-\ua9ef\ua9fa-\ua9fe\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa7e-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab5a\uab5c-\uab65\uab70-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc";
var nonASCIIidentifierChars = "\u200c\u200d\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u08d4-\u08e1\u08e3-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c00-\u0c03\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0d01-\u0d03\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0de6-\u0def\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1369-\u1371\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19d0-\u19da\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1ab0-\u1abd\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf2-\u1cf4\u1cf8\u1cf9\u1dc0-\u1df5\u1dfb-\u1dff\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua620-\ua629\ua66f\ua674-\ua67d\ua69e\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua880\ua881\ua8b4-\ua8c5\ua8d0-\ua8d9\ua8e0-\ua8f1\ua900-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\ua9e5\ua9f0-\ua9f9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b-\uaa7d\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe2f\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f";

var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");

nonASCIIidentifierStartChars = nonASCIIidentifierChars = null;

// These are a run-length and offset encoded representation of the
// >0xffff code points that are a valid part of identifiers. The
// offset starts at 0x10000, and each pair of numbers represents an
// offset to the next range, and then a size of the range. They were
// generated by bin/generate-identifier-regex.js

// eslint-disable-next-line comma-spacing
var astralIdentifierStartCodes = [0,11,2,25,2,18,2,1,2,14,3,13,35,122,70,52,268,28,4,48,48,31,17,26,6,37,11,29,3,35,5,7,2,4,43,157,19,35,5,35,5,39,9,51,157,310,10,21,11,7,153,5,3,0,2,43,2,1,4,0,3,22,11,22,10,30,66,18,2,1,11,21,11,25,71,55,7,1,65,0,16,3,2,2,2,26,45,28,4,28,36,7,2,27,28,53,11,21,11,18,14,17,111,72,56,50,14,50,785,52,76,44,33,24,27,35,42,34,4,0,13,47,15,3,22,0,2,0,36,17,2,24,85,6,2,0,2,3,2,14,2,9,8,46,39,7,3,1,3,21,2,6,2,1,2,4,4,0,19,0,13,4,159,52,19,3,54,47,21,1,2,0,185,46,42,3,37,47,21,0,60,42,86,25,391,63,32,0,449,56,264,8,2,36,18,0,50,29,881,921,103,110,18,195,2749,1070,4050,582,8634,568,8,30,114,29,19,47,17,3,32,20,6,18,881,68,12,0,67,12,65,0,32,6124,20,754,9486,1,3071,106,6,12,4,8,8,9,5991,84,2,70,2,1,3,0,3,1,3,3,2,11,2,0,2,6,2,64,2,3,3,7,2,6,2,27,2,3,2,4,2,0,4,6,2,339,3,24,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,7,4149,196,60,67,1213,3,2,26,2,1,2,0,3,0,2,9,2,3,2,0,2,0,7,0,5,0,2,0,2,0,2,2,2,1,2,0,3,0,2,0,2,0,2,0,2,0,2,1,2,0,3,3,2,6,2,3,2,3,2,0,2,9,2,16,6,2,2,4,2,16,4421,42710,42,4148,12,221,3,5761,10591,541];

// eslint-disable-next-line comma-spacing
var astralIdentifierCodes = [509,0,227,0,150,4,294,9,1368,2,2,1,6,3,41,2,5,0,166,1,1306,2,54,14,32,9,16,3,46,10,54,9,7,2,37,13,2,9,52,0,13,2,49,13,10,2,4,9,83,11,7,0,161,11,6,9,7,3,57,0,2,6,3,1,3,2,10,0,11,1,3,6,4,4,193,17,10,9,87,19,13,9,214,6,3,8,28,1,83,16,16,9,82,12,9,9,84,14,5,9,423,9,838,7,2,7,17,9,57,21,2,13,19882,9,135,4,60,6,26,9,1016,45,17,3,19723,1,5319,4,4,5,9,7,3,6,31,3,149,2,1418,49,513,54,5,49,9,0,15,0,23,4,2,14,1361,6,2,16,3,6,2,1,2,4,2214,6,110,6,6,9,792487,239];

// This has a complexity linear to the value of the code. The
// assumption is that looking up astral identifier characters is
// rare.
function isInAstralSet(code, set) {
  var pos = 0x10000;
  for (var i = 0; i < set.length; i += 2) {
    pos += set[i];
    if (pos > code) { return false }
    pos += set[i + 1];
    if (pos >= code) { return true }
  }
}

// Test whether a given character code starts an identifier.

function isIdentifierStart(code, astral) {
  if (code < 65) { return code === 36 }
  if (code < 91) { return true }
  if (code < 97) { return code === 95 }
  if (code < 123) { return true }
  if (code <= 0xffff) { return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code)) }
  if (astral === false) { return false }
  return isInAstralSet(code, astralIdentifierStartCodes)
}

// Test whether a given character is part of an identifier.

function isIdentifierChar(code, astral) {
  if (code < 48) { return code === 36 }
  if (code < 58) { return true }
  if (code < 65) { return false }
  if (code < 91) { return true }
  if (code < 97) { return code === 95 }
  if (code < 123) { return true }
  if (code <= 0xffff) { return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code)) }
  if (astral === false) { return false }
  return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes)
}

// ## Token types

// The assignment of fine-grained, information-carrying type objects
// allows the tokenizer to store the information it has about a
// token in a way that is very cheap for the parser to look up.

// All token type variables start with an underscore, to make them
// easy to recognize.

// The `beforeExpr` property is used to disambiguate between regular
// expressions and divisions. It is set on all token types that can
// be followed by an expression (thus, a slash after them would be a
// regular expression).
//
// The `startsExpr` property is used to check if the token ends a
// `yield` expression. It is set on all token types that either can
// directly start an expression (like a quotation mark) or can
// continue an expression (like the body of a string).
//
// `isLoop` marks a keyword as starting a loop, which is important
// to know when parsing a label, in order to allow or disallow
// continue jumps to that label.

var TokenType = function TokenType(label, conf) {
  if ( conf === void 0 ) { conf = {}; }

  this.label = label;
  this.keyword = conf.keyword;
  this.beforeExpr = !!conf.beforeExpr;
  this.startsExpr = !!conf.startsExpr;
  this.isLoop = !!conf.isLoop;
  this.isAssign = !!conf.isAssign;
  this.prefix = !!conf.prefix;
  this.postfix = !!conf.postfix;
  this.binop = conf.binop || null;
  this.updateContext = null;
};

function binop(name, prec) {
  return new TokenType(name, {beforeExpr: true, binop: prec})
}
var beforeExpr = {beforeExpr: true};
var startsExpr = {startsExpr: true};

// Map keyword names to token types.

var keywords$1$1 = {};

// Succinct definitions of keyword token types
function kw(name, options) {
  if ( options === void 0 ) { options = {}; }

  options.keyword = name;
  return keywords$1$1[name] = new TokenType(name, options)
}

var types = {
  num: new TokenType("num", startsExpr),
  regexp: new TokenType("regexp", startsExpr),
  string: new TokenType("string", startsExpr),
  name: new TokenType("name", startsExpr),
  eof: new TokenType("eof"),

  // Punctuation token types.
  bracketL: new TokenType("[", {beforeExpr: true, startsExpr: true}),
  bracketR: new TokenType("]"),
  braceL: new TokenType("{", {beforeExpr: true, startsExpr: true}),
  braceR: new TokenType("}"),
  parenL: new TokenType("(", {beforeExpr: true, startsExpr: true}),
  parenR: new TokenType(")"),
  comma: new TokenType(",", beforeExpr),
  semi: new TokenType(";", beforeExpr),
  colon: new TokenType(":", beforeExpr),
  dot: new TokenType("."),
  question: new TokenType("?", beforeExpr),
  arrow: new TokenType("=>", beforeExpr),
  template: new TokenType("template"),
  invalidTemplate: new TokenType("invalidTemplate"),
  ellipsis: new TokenType("...", beforeExpr),
  backQuote: new TokenType("`", startsExpr),
  dollarBraceL: new TokenType("${", {beforeExpr: true, startsExpr: true}),

  // Operators. These carry several kinds of properties to help the
  // parser use them properly (the presence of these properties is
  // what categorizes them as operators).
  //
  // `binop`, when present, specifies that this operator is a binary
  // operator, and will refer to its precedence.
  //
  // `prefix` and `postfix` mark the operator as a prefix or postfix
  // unary operator.
  //
  // `isAssign` marks all of `=`, `+=`, `-=` etcetera, which act as
  // binary operators with a very low precedence, that should result
  // in AssignmentExpression nodes.

  eq: new TokenType("=", {beforeExpr: true, isAssign: true}),
  assign: new TokenType("_=", {beforeExpr: true, isAssign: true}),
  incDec: new TokenType("++/--", {prefix: true, postfix: true, startsExpr: true}),
  prefix: new TokenType("!/~", {beforeExpr: true, prefix: true, startsExpr: true}),
  logicalOR: binop("||", 1),
  logicalAND: binop("&&", 2),
  bitwiseOR: binop("|", 3),
  bitwiseXOR: binop("^", 4),
  bitwiseAND: binop("&", 5),
  equality: binop("==/!=/===/!==", 6),
  relational: binop("</>/<=/>=", 7),
  bitShift: binop("<</>>/>>>", 8),
  plusMin: new TokenType("+/-", {beforeExpr: true, binop: 9, prefix: true, startsExpr: true}),
  modulo: binop("%", 10),
  star: binop("*", 10),
  slash: binop("/", 10),
  starstar: new TokenType("**", {beforeExpr: true}),

  // Keyword token types.
  _break: kw("break"),
  _case: kw("case", beforeExpr),
  _catch: kw("catch"),
  _continue: kw("continue"),
  _debugger: kw("debugger"),
  _default: kw("default", beforeExpr),
  _do: kw("do", {isLoop: true, beforeExpr: true}),
  _else: kw("else", beforeExpr),
  _finally: kw("finally"),
  _for: kw("for", {isLoop: true}),
  _function: kw("function", startsExpr),
  _if: kw("if"),
  _return: kw("return", beforeExpr),
  _switch: kw("switch"),
  _throw: kw("throw", beforeExpr),
  _try: kw("try"),
  _var: kw("var"),
  _const: kw("const"),
  _while: kw("while", {isLoop: true}),
  _with: kw("with"),
  _new: kw("new", {beforeExpr: true, startsExpr: true}),
  _this: kw("this", startsExpr),
  _super: kw("super", startsExpr),
  _class: kw("class", startsExpr),
  _extends: kw("extends", beforeExpr),
  _export: kw("export"),
  _import: kw("import"),
  _null: kw("null", startsExpr),
  _true: kw("true", startsExpr),
  _false: kw("false", startsExpr),
  _in: kw("in", {beforeExpr: true, binop: 7}),
  _instanceof: kw("instanceof", {beforeExpr: true, binop: 7}),
  _typeof: kw("typeof", {beforeExpr: true, prefix: true, startsExpr: true}),
  _void: kw("void", {beforeExpr: true, prefix: true, startsExpr: true}),
  _delete: kw("delete", {beforeExpr: true, prefix: true, startsExpr: true})
};

// Matches a whole line break (where CRLF is considered a single
// line break). Used to count lines.

var lineBreak = /\r\n?|\n|\u2028|\u2029/;
var lineBreakG = new RegExp(lineBreak.source, "g");

function isNewLine(code) {
  return code === 10 || code === 13 || code === 0x2028 || code === 0x2029
}

var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/;

var skipWhiteSpace = /(?:\s|\/\/.*|\/\*[^]*?\*\/)*/g;

var ref$1 = Object.prototype;
var hasOwnProperty = ref$1.hasOwnProperty;
var toString = ref$1.toString;

// Checks if an object has a property.

function has(obj, propName) {
  return hasOwnProperty.call(obj, propName)
}

var isArray = Array.isArray || (function (obj) { return (
  toString.call(obj) === "[object Array]"
); });

// These are used when `options.locations` is on, for the
// `startLoc` and `endLoc` properties.

var Position = function Position(line, col) {
  this.line = line;
  this.column = col;
};

Position.prototype.offset = function offset (n) {
  return new Position(this.line, this.column + n)
};

var SourceLocation = function SourceLocation(p, start, end) {
  this.start = start;
  this.end = end;
  if (p.sourceFile !== null) { this.source = p.sourceFile; }
};

// The `getLineInfo` function is mostly useful when the
// `locations` option is off (for performance reasons) and you
// want to find the line/column position for a given character
// offset. `input` should be the code string that the offset refers
// into.

function getLineInfo(input, offset) {
  for (var line = 1, cur = 0;;) {
    lineBreakG.lastIndex = cur;
    var match = lineBreakG.exec(input);
    if (match && match.index < offset) {
      ++line;
      cur = match.index + match[0].length;
    } else {
      return new Position(line, offset - cur)
    }
  }
}

// A second optional argument can be given to further configure
// the parser process. These options are recognized:

var defaultOptions = {
  // `ecmaVersion` indicates the ECMAScript version to parse. Must
  // be either 3, 5, 6 (2015), 7 (2016), or 8 (2017). This influences support
  // for strict mode, the set of reserved words, and support for
  // new syntax features. The default is 7.
  ecmaVersion: 7,
  // `sourceType` indicates the mode the code should be parsed in.
  // Can be either `"script"` or `"module"`. This influences global
  // strict mode and parsing of `import` and `export` declarations.
  sourceType: "script",
  // `onInsertedSemicolon` can be a callback that will be called
  // when a semicolon is automatically inserted. It will be passed
  // th position of the comma as an offset, and if `locations` is
  // enabled, it is given the location as a `{line, column}` object
  // as second argument.
  onInsertedSemicolon: null,
  // `onTrailingComma` is similar to `onInsertedSemicolon`, but for
  // trailing commas.
  onTrailingComma: null,
  // By default, reserved words are only enforced if ecmaVersion >= 5.
  // Set `allowReserved` to a boolean value to explicitly turn this on
  // an off. When this option has the value "never", reserved words
  // and keywords can also not be used as property names.
  allowReserved: null,
  // When enabled, a return at the top level is not considered an
  // error.
  allowReturnOutsideFunction: false,
  // When enabled, import/export statements are not constrained to
  // appearing at the top of the program.
  allowImportExportEverywhere: false,
  // When enabled, hashbang directive in the beginning of file
  // is allowed and treated as a line comment.
  allowHashBang: false,
  // When `locations` is on, `loc` properties holding objects with
  // `start` and `end` properties in `{line, column}` form (with
  // line being 1-based and column 0-based) will be attached to the
  // nodes.
  locations: false,
  // A function can be passed as `onToken` option, which will
  // cause Acorn to call that function with object in the same
  // format as tokens returned from `tokenizer().getToken()`. Note
  // that you are not allowed to call the parser from the
  // callback—that will corrupt its internal state.
  onToken: null,
  // A function can be passed as `onComment` option, which will
  // cause Acorn to call that function with `(block, text, start,
  // end)` parameters whenever a comment is skipped. `block` is a
  // boolean indicating whether this is a block (`/* */`) comment,
  // `text` is the content of the comment, and `start` and `end` are
  // character offsets that denote the start and end of the comment.
  // When the `locations` option is on, two more parameters are
  // passed, the full `{line, column}` locations of the start and
  // end of the comments. Note that you are not allowed to call the
  // parser from the callback—that will corrupt its internal state.
  onComment: null,
  // Nodes have their start and end characters offsets recorded in
  // `start` and `end` properties (directly on the node, rather than
  // the `loc` object, which holds line/column data. To also add a
  // [semi-standardized][range] `range` property holding a `[start,
  // end]` array with the same numbers, set the `ranges` option to
  // `true`.
  //
  // [range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678
  ranges: false,
  // It is possible to parse multiple files into a single AST by
  // passing the tree produced by parsing the first file as
  // `program` option in subsequent parses. This will add the
  // toplevel forms of the parsed file to the `Program` (top) node
  // of an existing parse tree.
  program: null,
  // When `locations` is on, you can pass this to record the source
  // file in every node's `loc` object.
  sourceFile: null,
  // This value, if given, is stored in every node, whether
  // `locations` is on or off.
  directSourceFile: null,
  // When enabled, parenthesized expressions are represented by
  // (non-standard) ParenthesizedExpression nodes
  preserveParens: false,
  plugins: {}
};

// Interpret and default an options object

function getOptions(opts) {
  var options = {};

  for (var opt in defaultOptions)
    { options[opt] = opts && has(opts, opt) ? opts[opt] : defaultOptions[opt]; }

  if (options.ecmaVersion >= 2015)
    { options.ecmaVersion -= 2009; }

  if (options.allowReserved == null)
    { options.allowReserved = options.ecmaVersion < 5; }

  if (isArray(options.onToken)) {
    var tokens = options.onToken;
    options.onToken = function (token) { return tokens.push(token); };
  }
  if (isArray(options.onComment))
    { options.onComment = pushComment(options, options.onComment); }

  return options
}

function pushComment(options, array) {
  return function(block, text, start, end, startLoc, endLoc) {
    var comment = {
      type: block ? "Block" : "Line",
      value: text,
      start: start,
      end: end
    };
    if (options.locations)
      { comment.loc = new SourceLocation(this, startLoc, endLoc); }
    if (options.ranges)
      { comment.range = [start, end]; }
    array.push(comment);
  }
}

// Registered plugins
var plugins = {};

function keywordRegexp(words) {
  return new RegExp("^(?:" + words.replace(/ /g, "|") + ")$")
}

var Parser = function Parser(options, input, startPos) {
  this.options = options = getOptions(options);
  this.sourceFile = options.sourceFile;
  this.keywords = keywordRegexp(keywords$1[options.ecmaVersion >= 6 ? 6 : 5]);
  var reserved = "";
  if (!options.allowReserved) {
    for (var v = options.ecmaVersion;; v--)
      { if (reserved = reservedWords[v]) { break } }
    if (options.sourceType == "module") { reserved += " await"; }
  }
  this.reservedWords = keywordRegexp(reserved);
  var reservedStrict = (reserved ? reserved + " " : "") + reservedWords.strict;
  this.reservedWordsStrict = keywordRegexp(reservedStrict);
  this.reservedWordsStrictBind = keywordRegexp(reservedStrict + " " + reservedWords.strictBind);
  this.input = String(input);

  // Used to signal to callers of `readWord1` whether the word
  // contained any escape sequences. This is needed because words with
  // escape sequences must not be interpreted as keywords.
  this.containsEsc = false;

  // Load plugins
  this.loadPlugins(options.plugins);

  // Set up token state

  // The current position of the tokenizer in the input.
  if (startPos) {
    this.pos = startPos;
    this.lineStart = this.input.lastIndexOf("\n", startPos - 1) + 1;
    this.curLine = this.input.slice(0, this.lineStart).split(lineBreak).length;
  } else {
    this.pos = this.lineStart = 0;
    this.curLine = 1;
  }

  // Properties of the current token:
  // Its type
  this.type = types.eof;
  // For tokens that include more information than their type, the value
  this.value = null;
  // Its start and end offset
  this.start = this.end = this.pos;
  // And, if locations are used, the {line, column} object
  // corresponding to those offsets
  this.startLoc = this.endLoc = this.curPosition();

  // Position information for the previous token
  this.lastTokEndLoc = this.lastTokStartLoc = null;
  this.lastTokStart = this.lastTokEnd = this.pos;

  // The context stack is used to superficially track syntactic
  // context to predict whether a regular expression is allowed in a
  // given position.
  this.context = this.initialContext();
  this.exprAllowed = true;

  // Figure out if it's a module code.
  this.inModule = options.sourceType === "module";
  this.strict = this.inModule || this.strictDirective(this.pos);

  // Used to signify the start of a potential arrow function
  this.potentialArrowAt = -1;

  // Flags to track whether we are in a function, a generator, an async function.
  this.inFunction = this.inGenerator = this.inAsync = false;
  // Positions to delayed-check that yield/await does not exist in default parameters.
  this.yieldPos = this.awaitPos = 0;
  // Labels in scope.
  this.labels = [];

  // If enabled, skip leading hashbang line.
  if (this.pos === 0 && options.allowHashBang && this.input.slice(0, 2) === "#!")
    { this.skipLineComment(2); }

  // Scope tracking for duplicate variable names (see scope.js)
  this.scopeStack = [];
  this.enterFunctionScope();
};

// DEPRECATED Kept for backwards compatibility until 3.0 in case a plugin uses them
Parser.prototype.isKeyword = function isKeyword (word) { return this.keywords.test(word) };
Parser.prototype.isReservedWord = function isReservedWord (word) { return this.reservedWords.test(word) };

Parser.prototype.extend = function extend (name, f) {
  this[name] = f(this[name]);
};

Parser.prototype.loadPlugins = function loadPlugins (pluginConfigs) {
    var this$1 = this;

  for (var name in pluginConfigs) {
    var plugin = plugins[name];
    if (!plugin) { throw new Error("Plugin '" + name + "' not found") }
    plugin(this$1, pluginConfigs[name]);
  }
};

Parser.prototype.parse = function parse () {
  var node = this.options.program || this.startNode();
  this.nextToken();
  return this.parseTopLevel(node)
};

var pp = Parser.prototype;

// ## Parser utilities

var literal = /^(?:'((?:\\.|[^'])*?)'|"((?:\\.|[^"])*?)"|;)/;
pp.strictDirective = function(start) {
  var this$1 = this;

  for (;;) {
    skipWhiteSpace.lastIndex = start;
    start += skipWhiteSpace.exec(this$1.input)[0].length;
    var match = literal.exec(this$1.input.slice(start));
    if (!match) { return false }
    if ((match[1] || match[2]) == "use strict") { return true }
    start += match[0].length;
  }
};

// Predicate that tests whether the next token is of the given
// type, and if yes, consumes it as a side effect.

pp.eat = function(type) {
  if (this.type === type) {
    this.next();
    return true
  } else {
    return false
  }
};

// Tests whether parsed token is a contextual keyword.

pp.isContextual = function(name) {
  return this.type === types.name && this.value === name
};

// Consumes contextual keyword if possible.

pp.eatContextual = function(name) {
  return this.value === name && this.eat(types.name)
};

// Asserts that following token is given contextual keyword.

pp.expectContextual = function(name) {
  if (!this.eatContextual(name)) { this.unexpected(); }
};

// Test whether a semicolon can be inserted at the current position.

pp.canInsertSemicolon = function() {
  return this.type === types.eof ||
    this.type === types.braceR ||
    lineBreak.test(this.input.slice(this.lastTokEnd, this.start))
};

pp.insertSemicolon = function() {
  if (this.canInsertSemicolon()) {
    if (this.options.onInsertedSemicolon)
      { this.options.onInsertedSemicolon(this.lastTokEnd, this.lastTokEndLoc); }
    return true
  }
};

// Consume a semicolon, or, failing that, see if we are allowed to
// pretend that there is a semicolon at this position.

pp.semicolon = function() {
  if (!this.eat(types.semi) && !this.insertSemicolon()) { this.unexpected(); }
};

pp.afterTrailingComma = function(tokType, notNext) {
  if (this.type == tokType) {
    if (this.options.onTrailingComma)
      { this.options.onTrailingComma(this.lastTokStart, this.lastTokStartLoc); }
    if (!notNext)
      { this.next(); }
    return true
  }
};

// Expect a token of a given type. If found, consume it, otherwise,
// raise an unexpected token error.

pp.expect = function(type) {
  this.eat(type) || this.unexpected();
};

// Raise an unexpected token error.

pp.unexpected = function(pos) {
  this.raise(pos != null ? pos : this.start, "Unexpected token");
};

function DestructuringErrors() {
  this.shorthandAssign =
  this.trailingComma =
  this.parenthesizedAssign =
  this.parenthesizedBind =
    -1;
}

pp.checkPatternErrors = function(refDestructuringErrors, isAssign) {
  if (!refDestructuringErrors) { return }
  if (refDestructuringErrors.trailingComma > -1)
    { this.raiseRecoverable(refDestructuringErrors.trailingComma, "Comma is not permitted after the rest element"); }
  var parens = isAssign ? refDestructuringErrors.parenthesizedAssign : refDestructuringErrors.parenthesizedBind;
  if (parens > -1) { this.raiseRecoverable(parens, "Parenthesized pattern"); }
};

pp.checkExpressionErrors = function(refDestructuringErrors, andThrow) {
  var pos = refDestructuringErrors ? refDestructuringErrors.shorthandAssign : -1;
  if (!andThrow) { return pos >= 0 }
  if (pos > -1) { this.raise(pos, "Shorthand property assignments are valid only in destructuring patterns"); }
};

pp.checkYieldAwaitInDefaultParams = function() {
  if (this.yieldPos && (!this.awaitPos || this.yieldPos < this.awaitPos))
    { this.raise(this.yieldPos, "Yield expression cannot be a default value"); }
  if (this.awaitPos)
    { this.raise(this.awaitPos, "Await expression cannot be a default value"); }
};

pp.isSimpleAssignTarget = function(expr) {
  if (expr.type === "ParenthesizedExpression")
    { return this.isSimpleAssignTarget(expr.expression) }
  return expr.type === "Identifier" || expr.type === "MemberExpression"
};

var pp$1 = Parser.prototype;

// ### Statement parsing

// Parse a program. Initializes the parser, reads any number of
// statements, and wraps them in a Program node.  Optionally takes a
// `program` argument.  If present, the statements will be appended
// to its body instead of creating a new node.

pp$1.parseTopLevel = function(node) {
  var this$1 = this;

  var exports = {};
  if (!node.body) { node.body = []; }
  while (this.type !== types.eof) {
    var stmt = this$1.parseStatement(true, true, exports);
    node.body.push(stmt);
  }
  this.adaptDirectivePrologue(node.body);
  this.next();
  if (this.options.ecmaVersion >= 6) {
    node.sourceType = this.options.sourceType;
  }
  return this.finishNode(node, "Program")
};

var loopLabel = {kind: "loop"};
var switchLabel = {kind: "switch"};

pp$1.isLet = function() {
  if (this.type !== types.name || this.options.ecmaVersion < 6 || this.value != "let") { return false }
  skipWhiteSpace.lastIndex = this.pos;
  var skip = skipWhiteSpace.exec(this.input);
  var next = this.pos + skip[0].length, nextCh = this.input.charCodeAt(next);
  if (nextCh === 91 || nextCh == 123) { return true } // '{' and '['
  if (isIdentifierStart(nextCh, true)) {
    var pos = next + 1;
    while (isIdentifierChar(this.input.charCodeAt(pos), true)) { ++pos; }
    var ident = this.input.slice(next, pos);
    if (!this.isKeyword(ident)) { return true }
  }
  return false
};

// check 'async [no LineTerminator here] function'
// - 'async /*foo*/ function' is OK.
// - 'async /*\n*/ function' is invalid.
pp$1.isAsyncFunction = function() {
  if (this.type !== types.name || this.options.ecmaVersion < 8 || this.value != "async")
    { return false }

  skipWhiteSpace.lastIndex = this.pos;
  var skip = skipWhiteSpace.exec(this.input);
  var next = this.pos + skip[0].length;
  return !lineBreak.test(this.input.slice(this.pos, next)) &&
    this.input.slice(next, next + 8) === "function" &&
    (next + 8 == this.input.length || !isIdentifierChar(this.input.charAt(next + 8)))
};

// Parse a single statement.
//
// If expecting a statement and finding a slash operator, parse a
// regular expression literal. This is to handle cases like
// `if (foo) /blah/.exec(foo)`, where looking at the previous token
// does not help.

pp$1.parseStatement = function(declaration, topLevel, exports) {
  var starttype = this.type, node = this.startNode(), kind;

  if (this.isLet()) {
    starttype = types._var;
    kind = "let";
  }

  // Most types of statements are recognized by the keyword they
  // start with. Many are trivial to parse, some require a bit of
  // complexity.

  switch (starttype) {
  case types._break: case types._continue: return this.parseBreakContinueStatement(node, starttype.keyword)
  case types._debugger: return this.parseDebuggerStatement(node)
  case types._do: return this.parseDoStatement(node)
  case types._for: return this.parseForStatement(node)
  case types._function:
    if (!declaration && this.options.ecmaVersion >= 6) { this.unexpected(); }
    return this.parseFunctionStatement(node, false)
  case types._class:
    if (!declaration) { this.unexpected(); }
    return this.parseClass(node, true)
  case types._if: return this.parseIfStatement(node)
  case types._return: return this.parseReturnStatement(node)
  case types._switch: return this.parseSwitchStatement(node)
  case types._throw: return this.parseThrowStatement(node)
  case types._try: return this.parseTryStatement(node)
  case types._const: case types._var:
    kind = kind || this.value;
    if (!declaration && kind != "var") { this.unexpected(); }
    return this.parseVarStatement(node, kind)
  case types._while: return this.parseWhileStatement(node)
  case types._with: return this.parseWithStatement(node)
  case types.braceL: return this.parseBlock()
  case types.semi: return this.parseEmptyStatement(node)
  case types._export:
  case types._import:
    if (!this.options.allowImportExportEverywhere) {
      if (!topLevel)
        { this.raise(this.start, "'import' and 'export' may only appear at the top level"); }
      if (!this.inModule)
        { this.raise(this.start, "'import' and 'export' may appear only with 'sourceType: module'"); }
    }
    return starttype === types._import ? this.parseImport(node) : this.parseExport(node, exports)

    // If the statement does not start with a statement keyword or a
    // brace, it's an ExpressionStatement or LabeledStatement. We
    // simply start parsing an expression, and afterwards, if the
    // next token is a colon and the expression was a simple
    // Identifier node, we switch to interpreting it as a label.
  default:
    if (this.isAsyncFunction() && declaration) {
      this.next();
      return this.parseFunctionStatement(node, true)
    }

    var maybeName = this.value, expr = this.parseExpression();
    if (starttype === types.name && expr.type === "Identifier" && this.eat(types.colon))
      { return this.parseLabeledStatement(node, maybeName, expr) }
    else { return this.parseExpressionStatement(node, expr) }
  }
};

pp$1.parseBreakContinueStatement = function(node, keyword) {
  var this$1 = this;

  var isBreak = keyword == "break";
  this.next();
  if (this.eat(types.semi) || this.insertSemicolon()) { node.label = null; }
  else if (this.type !== types.name) { this.unexpected(); }
  else {
    node.label = this.parseIdent();
    this.semicolon();
  }

  // Verify that there is an actual destination to break or
  // continue to.
  var i = 0;
  for (; i < this.labels.length; ++i) {
    var lab = this$1.labels[i];
    if (node.label == null || lab.name === node.label.name) {
      if (lab.kind != null && (isBreak || lab.kind === "loop")) { break }
      if (node.label && isBreak) { break }
    }
  }
  if (i === this.labels.length) { this.raise(node.start, "Unsyntactic " + keyword); }
  return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement")
};

pp$1.parseDebuggerStatement = function(node) {
  this.next();
  this.semicolon();
  return this.finishNode(node, "DebuggerStatement")
};

pp$1.parseDoStatement = function(node) {
  this.next();
  this.labels.push(loopLabel);
  node.body = this.parseStatement(false);
  this.labels.pop();
  this.expect(types._while);
  node.test = this.parseParenExpression();
  if (this.options.ecmaVersion >= 6)
    { this.eat(types.semi); }
  else
    { this.semicolon(); }
  return this.finishNode(node, "DoWhileStatement")
};

// Disambiguating between a `for` and a `for`/`in` or `for`/`of`
// loop is non-trivial. Basically, we have to parse the init `var`
// statement or expression, disallowing the `in` operator (see
// the second parameter to `parseExpression`), and then check
// whether the next token is `in` or `of`. When there is no init
// part (semicolon immediately after the opening parenthesis), it
// is a regular `for` loop.

pp$1.parseForStatement = function(node) {
  this.next();
  this.labels.push(loopLabel);
  this.enterLexicalScope();
  this.expect(types.parenL);
  if (this.type === types.semi) { return this.parseFor(node, null) }
  var isLet = this.isLet();
  if (this.type === types._var || this.type === types._const || isLet) {
    var init$1 = this.startNode(), kind = isLet ? "let" : this.value;
    this.next();
    this.parseVar(init$1, true, kind);
    this.finishNode(init$1, "VariableDeclaration");
    if ((this.type === types._in || (this.options.ecmaVersion >= 6 && this.isContextual("of"))) && init$1.declarations.length === 1 &&
        !(kind !== "var" && init$1.declarations[0].init))
      { return this.parseForIn(node, init$1) }
    return this.parseFor(node, init$1)
  }
  var refDestructuringErrors = new DestructuringErrors;
  var init = this.parseExpression(true, refDestructuringErrors);
  if (this.type === types._in || (this.options.ecmaVersion >= 6 && this.isContextual("of"))) {
    this.toAssignable(init);
    this.checkLVal(init);
    this.checkPatternErrors(refDestructuringErrors, true);
    return this.parseForIn(node, init)
  } else {
    this.checkExpressionErrors(refDestructuringErrors, true);
  }
  return this.parseFor(node, init)
};

pp$1.parseFunctionStatement = function(node, isAsync) {
  this.next();
  return this.parseFunction(node, true, false, isAsync)
};

pp$1.isFunction = function() {
  return this.type === types._function || this.isAsyncFunction()
};

pp$1.parseIfStatement = function(node) {
  this.next();
  node.test = this.parseParenExpression();
  // allow function declarations in branches, but only in non-strict mode
  node.consequent = this.parseStatement(!this.strict && this.isFunction());
  node.alternate = this.eat(types._else) ? this.parseStatement(!this.strict && this.isFunction()) : null;
  return this.finishNode(node, "IfStatement")
};

pp$1.parseReturnStatement = function(node) {
  if (!this.inFunction && !this.options.allowReturnOutsideFunction)
    { this.raise(this.start, "'return' outside of function"); }
  this.next();

  // In `return` (and `break`/`continue`), the keywords with
  // optional arguments, we eagerly look for a semicolon or the
  // possibility to insert one.

  if (this.eat(types.semi) || this.insertSemicolon()) { node.argument = null; }
  else { node.argument = this.parseExpression(); this.semicolon(); }
  return this.finishNode(node, "ReturnStatement")
};

pp$1.parseSwitchStatement = function(node) {
  var this$1 = this;

  this.next();
  node.discriminant = this.parseParenExpression();
  node.cases = [];
  this.expect(types.braceL);
  this.labels.push(switchLabel);
  this.enterLexicalScope();

  // Statements under must be grouped (by label) in SwitchCase
  // nodes. `cur` is used to keep the node that we are currently
  // adding statements to.

  var cur;
  for (var sawDefault = false; this.type != types.braceR;) {
    if (this$1.type === types._case || this$1.type === types._default) {
      var isCase = this$1.type === types._case;
      if (cur) { this$1.finishNode(cur, "SwitchCase"); }
      node.cases.push(cur = this$1.startNode());
      cur.consequent = [];
      this$1.next();
      if (isCase) {
        cur.test = this$1.parseExpression();
      } else {
        if (sawDefault) { this$1.raiseRecoverable(this$1.lastTokStart, "Multiple default clauses"); }
        sawDefault = true;
        cur.test = null;
      }
      this$1.expect(types.colon);
    } else {
      if (!cur) { this$1.unexpected(); }
      cur.consequent.push(this$1.parseStatement(true));
    }
  }
  this.exitLexicalScope();
  if (cur) { this.finishNode(cur, "SwitchCase"); }
  this.next(); // Closing brace
  this.labels.pop();
  return this.finishNode(node, "SwitchStatement")
};

pp$1.parseThrowStatement = function(node) {
  this.next();
  if (lineBreak.test(this.input.slice(this.lastTokEnd, this.start)))
    { this.raise(this.lastTokEnd, "Illegal newline after throw"); }
  node.argument = this.parseExpression();
  this.semicolon();
  return this.finishNode(node, "ThrowStatement")
};

// Reused empty array added for node fields that are always empty.

var empty = [];

pp$1.parseTryStatement = function(node) {
  this.next();
  node.block = this.parseBlock();
  node.handler = null;
  if (this.type === types._catch) {
    var clause = this.startNode();
    this.next();
    this.expect(types.parenL);
    clause.param = this.parseBindingAtom();
    this.enterLexicalScope();
    this.checkLVal(clause.param, "let");
    this.expect(types.parenR);
    clause.body = this.parseBlock(false);
    this.exitLexicalScope();
    node.handler = this.finishNode(clause, "CatchClause");
  }
  node.finalizer = this.eat(types._finally) ? this.parseBlock() : null;
  if (!node.handler && !node.finalizer)
    { this.raise(node.start, "Missing catch or finally clause"); }
  return this.finishNode(node, "TryStatement")
};

pp$1.parseVarStatement = function(node, kind) {
  this.next();
  this.parseVar(node, false, kind);
  this.semicolon();
  return this.finishNode(node, "VariableDeclaration")
};

pp$1.parseWhileStatement = function(node) {
  this.next();
  node.test = this.parseParenExpression();
  this.labels.push(loopLabel);
  node.body = this.parseStatement(false);
  this.labels.pop();
  return this.finishNode(node, "WhileStatement")
};

pp$1.parseWithStatement = function(node) {
  if (this.strict) { this.raise(this.start, "'with' in strict mode"); }
  this.next();
  node.object = this.parseParenExpression();
  node.body = this.parseStatement(false);
  return this.finishNode(node, "WithStatement")
};

pp$1.parseEmptyStatement = function(node) {
  this.next();
  return this.finishNode(node, "EmptyStatement")
};

pp$1.parseLabeledStatement = function(node, maybeName, expr) {
  var this$1 = this;

  for (var i$1 = 0, list = this$1.labels; i$1 < list.length; i$1 += 1)
    {
    var label = list[i$1];

    if (label.name === maybeName)
      { this$1.raise(expr.start, "Label '" + maybeName + "' is already declared");
  } }
  var kind = this.type.isLoop ? "loop" : this.type === types._switch ? "switch" : null;
  for (var i = this.labels.length - 1; i >= 0; i--) {
    var label$1 = this$1.labels[i];
    if (label$1.statementStart == node.start) {
      label$1.statementStart = this$1.start;
      label$1.kind = kind;
    } else { break }
  }
  this.labels.push({name: maybeName, kind: kind, statementStart: this.start});
  node.body = this.parseStatement(true);
  if (node.body.type == "ClassDeclaration" ||
      node.body.type == "VariableDeclaration" && node.body.kind != "var" ||
      node.body.type == "FunctionDeclaration" && (this.strict || node.body.generator))
    { this.raiseRecoverable(node.body.start, "Invalid labeled declaration"); }
  this.labels.pop();
  node.label = expr;
  return this.finishNode(node, "LabeledStatement")
};

pp$1.parseExpressionStatement = function(node, expr) {
  node.expression = expr;
  this.semicolon();
  return this.finishNode(node, "ExpressionStatement")
};

// Parse a semicolon-enclosed block of statements, handling `"use
// strict"` declarations when `allowStrict` is true (used for
// function bodies).

pp$1.parseBlock = function(createNewLexicalScope) {
  var this$1 = this;
  if ( createNewLexicalScope === void 0 ) { createNewLexicalScope = true; }

  var node = this.startNode();
  node.body = [];
  this.expect(types.braceL);
  if (createNewLexicalScope) {
    this.enterLexicalScope();
  }
  while (!this.eat(types.braceR)) {
    var stmt = this$1.parseStatement(true);
    node.body.push(stmt);
  }
  if (createNewLexicalScope) {
    this.exitLexicalScope();
  }
  return this.finishNode(node, "BlockStatement")
};

// Parse a regular `for` loop. The disambiguation code in
// `parseStatement` will already have parsed the init statement or
// expression.

pp$1.parseFor = function(node, init) {
  node.init = init;
  this.expect(types.semi);
  node.test = this.type === types.semi ? null : this.parseExpression();
  this.expect(types.semi);
  node.update = this.type === types.parenR ? null : this.parseExpression();
  this.expect(types.parenR);
  this.exitLexicalScope();
  node.body = this.parseStatement(false);
  this.labels.pop();
  return this.finishNode(node, "ForStatement")
};

// Parse a `for`/`in` and `for`/`of` loop, which are almost
// same from parser's perspective.

pp$1.parseForIn = function(node, init) {
  var type = this.type === types._in ? "ForInStatement" : "ForOfStatement";
  this.next();
  node.left = init;
  node.right = this.parseExpression();
  this.expect(types.parenR);
  this.exitLexicalScope();
  node.body = this.parseStatement(false);
  this.labels.pop();
  return this.finishNode(node, type)
};

// Parse a list of variable declarations.

pp$1.parseVar = function(node, isFor, kind) {
  var this$1 = this;

  node.declarations = [];
  node.kind = kind;
  for (;;) {
    var decl = this$1.startNode();
    this$1.parseVarId(decl, kind);
    if (this$1.eat(types.eq)) {
      decl.init = this$1.parseMaybeAssign(isFor);
    } else if (kind === "const" && !(this$1.type === types._in || (this$1.options.ecmaVersion >= 6 && this$1.isContextual("of")))) {
      this$1.unexpected();
    } else if (decl.id.type != "Identifier" && !(isFor && (this$1.type === types._in || this$1.isContextual("of")))) {
      this$1.raise(this$1.lastTokEnd, "Complex binding patterns require an initialization value");
    } else {
      decl.init = null;
    }
    node.declarations.push(this$1.finishNode(decl, "VariableDeclarator"));
    if (!this$1.eat(types.comma)) { break }
  }
  return node
};

pp$1.parseVarId = function(decl, kind) {
  decl.id = this.parseBindingAtom(kind);
  this.checkLVal(decl.id, kind, false);
};

// Parse a function declaration or literal (depending on the
// `isStatement` parameter).

pp$1.parseFunction = function(node, isStatement, allowExpressionBody, isAsync) {
  this.initFunction(node);
  if (this.options.ecmaVersion >= 6 && !isAsync)
    { node.generator = this.eat(types.star); }
  if (this.options.ecmaVersion >= 8)
    { node.async = !!isAsync; }

  if (isStatement) {
    node.id = isStatement === "nullableID" && this.type != types.name ? null : this.parseIdent();
    if (node.id) {
      this.checkLVal(node.id, "var");
    }
  }

  var oldInGen = this.inGenerator, oldInAsync = this.inAsync,
      oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldInFunc = this.inFunction;
  this.inGenerator = node.generator;
  this.inAsync = node.async;
  this.yieldPos = 0;
  this.awaitPos = 0;
  this.inFunction = true;
  this.enterFunctionScope();

  if (!isStatement)
    { node.id = this.type == types.name ? this.parseIdent() : null; }

  this.parseFunctionParams(node);
  this.parseFunctionBody(node, allowExpressionBody);

  this.inGenerator = oldInGen;
  this.inAsync = oldInAsync;
  this.yieldPos = oldYieldPos;
  this.awaitPos = oldAwaitPos;
  this.inFunction = oldInFunc;
  return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression")
};

pp$1.parseFunctionParams = function(node) {
  this.expect(types.parenL);
  node.params = this.parseBindingList(types.parenR, false, this.options.ecmaVersion >= 8);
  this.checkYieldAwaitInDefaultParams();
};

// Parse a class declaration or literal (depending on the
// `isStatement` parameter).

pp$1.parseClass = function(node, isStatement) {
  var this$1 = this;

  this.next();

  this.parseClassId(node, isStatement);
  this.parseClassSuper(node);
  var classBody = this.startNode();
  var hadConstructor = false;
  classBody.body = [];
  this.expect(types.braceL);
  while (!this.eat(types.braceR)) {
    if (this$1.eat(types.semi)) { continue }
    var method = this$1.startNode();
    var isGenerator = this$1.eat(types.star);
    var isAsync = false;
    var isMaybeStatic = this$1.type === types.name && this$1.value === "static";
    this$1.parsePropertyName(method);
    method.static = isMaybeStatic && this$1.type !== types.parenL;
    if (method.static) {
      if (isGenerator) { this$1.unexpected(); }
      isGenerator = this$1.eat(types.star);
      this$1.parsePropertyName(method);
    }
    if (this$1.options.ecmaVersion >= 8 && !isGenerator && !method.computed &&
        method.key.type === "Identifier" && method.key.name === "async" && this$1.type !== types.parenL &&
        !this$1.canInsertSemicolon()) {
      isAsync = true;
      this$1.parsePropertyName(method);
    }
    method.kind = "method";
    var isGetSet = false;
    if (!method.computed) {
      var key = method.key;
      if (!isGenerator && !isAsync && key.type === "Identifier" && this$1.type !== types.parenL && (key.name === "get" || key.name === "set")) {
        isGetSet = true;
        method.kind = key.name;
        key = this$1.parsePropertyName(method);
      }
      if (!method.static && (key.type === "Identifier" && key.name === "constructor" ||
          key.type === "Literal" && key.value === "constructor")) {
        if (hadConstructor) { this$1.raise(key.start, "Duplicate constructor in the same class"); }
        if (isGetSet) { this$1.raise(key.start, "Constructor can't have get/set modifier"); }
        if (isGenerator) { this$1.raise(key.start, "Constructor can't be a generator"); }
        if (isAsync) { this$1.raise(key.start, "Constructor can't be an async method"); }
        method.kind = "constructor";
        hadConstructor = true;
      }
    }
    this$1.parseClassMethod(classBody, method, isGenerator, isAsync);
    if (isGetSet) {
      var paramCount = method.kind === "get" ? 0 : 1;
      if (method.value.params.length !== paramCount) {
        var start = method.value.start;
        if (method.kind === "get")
          { this$1.raiseRecoverable(start, "getter should have no params"); }
        else
          { this$1.raiseRecoverable(start, "setter should have exactly one param"); }
      } else {
        if (method.kind === "set" && method.value.params[0].type === "RestElement")
          { this$1.raiseRecoverable(method.value.params[0].start, "Setter cannot use rest params"); }
      }
    }
  }
  node.body = this.finishNode(classBody, "ClassBody");
  return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression")
};

pp$1.parseClassMethod = function(classBody, method, isGenerator, isAsync) {
  method.value = this.parseMethod(isGenerator, isAsync);
  classBody.body.push(this.finishNode(method, "MethodDefinition"));
};

pp$1.parseClassId = function(node, isStatement) {
  node.id = this.type === types.name ? this.parseIdent() : isStatement === true ? this.unexpected() : null;
};

pp$1.parseClassSuper = function(node) {
  node.superClass = this.eat(types._extends) ? this.parseExprSubscripts() : null;
};

// Parses module export declaration.

pp$1.parseExport = function(node, exports) {
  var this$1 = this;

  this.next();
  // export * from '...'
  if (this.eat(types.star)) {
    this.expectContextual("from");
    node.source = this.type === types.string ? this.parseExprAtom() : this.unexpected();
    this.semicolon();
    return this.finishNode(node, "ExportAllDeclaration")
  }
  if (this.eat(types._default)) { // export default ...
    this.checkExport(exports, "default", this.lastTokStart);
    var isAsync;
    if (this.type === types._function || (isAsync = this.isAsyncFunction())) {
      var fNode = this.startNode();
      this.next();
      if (isAsync) { this.next(); }
      node.declaration = this.parseFunction(fNode, "nullableID", false, isAsync);
    } else if (this.type === types._class) {
      var cNode = this.startNode();
      node.declaration = this.parseClass(cNode, "nullableID");
    } else {
      node.declaration = this.parseMaybeAssign();
      this.semicolon();
    }
    return this.finishNode(node, "ExportDefaultDeclaration")
  }
  // export var|const|let|function|class ...
  if (this.shouldParseExportStatement()) {
    node.declaration = this.parseStatement(true);
    if (node.declaration.type === "VariableDeclaration")
      { this.checkVariableExport(exports, node.declaration.declarations); }
    else
      { this.checkExport(exports, node.declaration.id.name, node.declaration.id.start); }
    node.specifiers = [];
    node.source = null;
  } else { // export { x, y as z } [from '...']
    node.declaration = null;
    node.specifiers = this.parseExportSpecifiers(exports);
    if (this.eatContextual("from")) {
      node.source = this.type === types.string ? this.parseExprAtom() : this.unexpected();
    } else {
      // check for keywords used as local names
      for (var i = 0, list = node.specifiers; i < list.length; i += 1) {
        var spec = list[i];

        this$1.checkUnreserved(spec.local);
      }

      node.source = null;
    }
    this.semicolon();
  }
  return this.finishNode(node, "ExportNamedDeclaration")
};

pp$1.checkExport = function(exports, name, pos) {
  if (!exports) { return }
  if (has(exports, name))
    { this.raiseRecoverable(pos, "Duplicate export '" + name + "'"); }
  exports[name] = true;
};

pp$1.checkPatternExport = function(exports, pat) {
  var this$1 = this;

  var type = pat.type;
  if (type == "Identifier")
    { this.checkExport(exports, pat.name, pat.start); }
  else if (type == "ObjectPattern")
    { for (var i = 0, list = pat.properties; i < list.length; i += 1)
      {
        var prop = list[i];

        this$1.checkPatternExport(exports, prop.value);
      } }
  else if (type == "ArrayPattern")
    { for (var i$1 = 0, list$1 = pat.elements; i$1 < list$1.length; i$1 += 1) {
      var elt = list$1[i$1];

        if (elt) { this$1.checkPatternExport(exports, elt); }
    } }
  else if (type == "AssignmentPattern")
    { this.checkPatternExport(exports, pat.left); }
  else if (type == "ParenthesizedExpression")
    { this.checkPatternExport(exports, pat.expression); }
};

pp$1.checkVariableExport = function(exports, decls) {
  var this$1 = this;

  if (!exports) { return }
  for (var i = 0, list = decls; i < list.length; i += 1)
    {
    var decl = list[i];

    this$1.checkPatternExport(exports, decl.id);
  }
};

pp$1.shouldParseExportStatement = function() {
  return this.type.keyword === "var" ||
    this.type.keyword === "const" ||
    this.type.keyword === "class" ||
    this.type.keyword === "function" ||
    this.isLet() ||
    this.isAsyncFunction()
};

// Parses a comma-separated list of module exports.

pp$1.parseExportSpecifiers = function(exports) {
  var this$1 = this;

  var nodes = [], first = true;
  // export { x, y as z } [from '...']
  this.expect(types.braceL);
  while (!this.eat(types.braceR)) {
    if (!first) {
      this$1.expect(types.comma);
      if (this$1.afterTrailingComma(types.braceR)) { break }
    } else { first = false; }

    var node = this$1.startNode();
    node.local = this$1.parseIdent(true);
    node.exported = this$1.eatContextual("as") ? this$1.parseIdent(true) : node.local;
    this$1.checkExport(exports, node.exported.name, node.exported.start);
    nodes.push(this$1.finishNode(node, "ExportSpecifier"));
  }
  return nodes
};

// Parses import declaration.

pp$1.parseImport = function(node) {
  this.next();
  // import '...'
  if (this.type === types.string) {
    node.specifiers = empty;
    node.source = this.parseExprAtom();
  } else {
    node.specifiers = this.parseImportSpecifiers();
    this.expectContextual("from");
    node.source = this.type === types.string ? this.parseExprAtom() : this.unexpected();
  }
  this.semicolon();
  return this.finishNode(node, "ImportDeclaration")
};

// Parses a comma-separated list of module imports.

pp$1.parseImportSpecifiers = function() {
  var this$1 = this;

  var nodes = [], first = true;
  if (this.type === types.name) {
    // import defaultObj, { x, y as z } from '...'
    var node = this.startNode();
    node.local = this.parseIdent();
    this.checkLVal(node.local, "let");
    nodes.push(this.finishNode(node, "ImportDefaultSpecifier"));
    if (!this.eat(types.comma)) { return nodes }
  }
  if (this.type === types.star) {
    var node$1 = this.startNode();
    this.next();
    this.expectContextual("as");
    node$1.local = this.parseIdent();
    this.checkLVal(node$1.local, "let");
    nodes.push(this.finishNode(node$1, "ImportNamespaceSpecifier"));
    return nodes
  }
  this.expect(types.braceL);
  while (!this.eat(types.braceR)) {
    if (!first) {
      this$1.expect(types.comma);
      if (this$1.afterTrailingComma(types.braceR)) { break }
    } else { first = false; }

    var node$2 = this$1.startNode();
    node$2.imported = this$1.parseIdent(true);
    if (this$1.eatContextual("as")) {
      node$2.local = this$1.parseIdent();
    } else {
      this$1.checkUnreserved(node$2.imported);
      node$2.local = node$2.imported;
    }
    this$1.checkLVal(node$2.local, "let");
    nodes.push(this$1.finishNode(node$2, "ImportSpecifier"));
  }
  return nodes
};

// Set `ExpressionStatement#directive` property for directive prologues.
pp$1.adaptDirectivePrologue = function(statements) {
  for (var i = 0; i < statements.length && this.isDirectiveCandidate(statements[i]); ++i) {
    statements[i].directive = statements[i].expression.raw.slice(1, -1);
  }
};
pp$1.isDirectiveCandidate = function(statement) {
  return (
    statement.type === "ExpressionStatement" &&
    statement.expression.type === "Literal" &&
    typeof statement.expression.value === "string" &&
    // Reject parenthesized strings.
    (this.input[statement.start] === "\"" || this.input[statement.start] === "'")
  )
};

var pp$2 = Parser.prototype;

// Convert existing expression atom to assignable pattern
// if possible.

pp$2.toAssignable = function(node, isBinding) {
  var this$1 = this;

  if (this.options.ecmaVersion >= 6 && node) {
    switch (node.type) {
    case "Identifier":
      if (this.inAsync && node.name === "await")
        { this.raise(node.start, "Can not use 'await' as identifier inside an async function"); }
      break

    case "ObjectPattern":
    case "ArrayPattern":
      break

    case "ObjectExpression":
      node.type = "ObjectPattern";
      for (var i = 0, list = node.properties; i < list.length; i += 1) {
        var prop = list[i];

      if (prop.kind !== "init") { this$1.raise(prop.key.start, "Object pattern can't contain getter or setter"); }
        this$1.toAssignable(prop.value, isBinding);
      }
      break

    case "ArrayExpression":
      node.type = "ArrayPattern";
      this.toAssignableList(node.elements, isBinding);
      break

    case "AssignmentExpression":
      if (node.operator === "=") {
        node.type = "AssignmentPattern";
        delete node.operator;
        this.toAssignable(node.left, isBinding);
        // falls through to AssignmentPattern
      } else {
        this.raise(node.left.end, "Only '=' operator can be used for specifying default value.");
        break
      }

    case "AssignmentPattern":
      break

    case "ParenthesizedExpression":
      this.toAssignable(node.expression, isBinding);
      break

    case "MemberExpression":
      if (!isBinding) { break }

    default:
      this.raise(node.start, "Assigning to rvalue");
    }
  }
  return node
};

// Convert list of expression atoms to binding list.

pp$2.toAssignableList = function(exprList, isBinding) {
  var this$1 = this;

  var end = exprList.length;
  if (end) {
    var last = exprList[end - 1];
    if (last && last.type == "RestElement") {
      --end;
    } else if (last && last.type == "SpreadElement") {
      last.type = "RestElement";
      var arg = last.argument;
      this.toAssignable(arg, isBinding);
      --end;
    }

    if (this.options.ecmaVersion === 6 && isBinding && last && last.type === "RestElement" && last.argument.type !== "Identifier")
      { this.unexpected(last.argument.start); }
  }
  for (var i = 0; i < end; i++) {
    var elt = exprList[i];
    if (elt) { this$1.toAssignable(elt, isBinding); }
  }
  return exprList
};

// Parses spread element.

pp$2.parseSpread = function(refDestructuringErrors) {
  var node = this.startNode();
  this.next();
  node.argument = this.parseMaybeAssign(false, refDestructuringErrors);
  return this.finishNode(node, "SpreadElement")
};

pp$2.parseRestBinding = function() {
  var node = this.startNode();
  this.next();

  // RestElement inside of a function parameter must be an identifier
  if (this.options.ecmaVersion === 6 && this.type !== types.name)
    { this.unexpected(); }

  node.argument = this.parseBindingAtom();

  return this.finishNode(node, "RestElement")
};

// Parses lvalue (assignable) atom.

pp$2.parseBindingAtom = function() {
  if (this.options.ecmaVersion >= 6) {
    switch (this.type) {
    case types.bracketL:
      var node = this.startNode();
      this.next();
      node.elements = this.parseBindingList(types.bracketR, true, true);
      return this.finishNode(node, "ArrayPattern")

    case types.braceL:
      return this.parseObj(true)
    }
  }
  return this.parseIdent()
};

pp$2.parseBindingList = function(close, allowEmpty, allowTrailingComma) {
  var this$1 = this;

  var elts = [], first = true;
  while (!this.eat(close)) {
    if (first) { first = false; }
    else { this$1.expect(types.comma); }
    if (allowEmpty && this$1.type === types.comma) {
      elts.push(null);
    } else if (allowTrailingComma && this$1.afterTrailingComma(close)) {
      break
    } else if (this$1.type === types.ellipsis) {
      var rest = this$1.parseRestBinding();
      this$1.parseBindingListItem(rest);
      elts.push(rest);
      if (this$1.type === types.comma) { this$1.raise(this$1.start, "Comma is not permitted after the rest element"); }
      this$1.expect(close);
      break
    } else {
      var elem = this$1.parseMaybeDefault(this$1.start, this$1.startLoc);
      this$1.parseBindingListItem(elem);
      elts.push(elem);
    }
  }
  return elts
};

pp$2.parseBindingListItem = function(param) {
  return param
};

// Parses assignment pattern around given atom if possible.

pp$2.parseMaybeDefault = function(startPos, startLoc, left) {
  left = left || this.parseBindingAtom();
  if (this.options.ecmaVersion < 6 || !this.eat(types.eq)) { return left }
  var node = this.startNodeAt(startPos, startLoc);
  node.left = left;
  node.right = this.parseMaybeAssign();
  return this.finishNode(node, "AssignmentPattern")
};

// Verify that a node is an lval — something that can be assigned
// to.
// bindingType can be either:
// 'var' indicating that the lval creates a 'var' binding
// 'let' indicating that the lval creates a lexical ('let' or 'const') binding
// 'none' indicating that the binding should be checked for illegal identifiers, but not for duplicate references

pp$2.checkLVal = function(expr, bindingType, checkClashes) {
  var this$1 = this;

  switch (expr.type) {
  case "Identifier":
    if (this.strict && this.reservedWordsStrictBind.test(expr.name))
      { this.raiseRecoverable(expr.start, (bindingType ? "Binding " : "Assigning to ") + expr.name + " in strict mode"); }
    if (checkClashes) {
      if (has(checkClashes, expr.name))
        { this.raiseRecoverable(expr.start, "Argument name clash"); }
      checkClashes[expr.name] = true;
    }
    if (bindingType && bindingType !== "none") {
      if (
        bindingType === "var" && !this.canDeclareVarName(expr.name) ||
        bindingType !== "var" && !this.canDeclareLexicalName(expr.name)
      ) {
        this.raiseRecoverable(expr.start, ("Identifier '" + (expr.name) + "' has already been declared"));
      }
      if (bindingType === "var") {
        this.declareVarName(expr.name);
      } else {
        this.declareLexicalName(expr.name);
      }
    }
    break

  case "MemberExpression":
    if (bindingType) { this.raiseRecoverable(expr.start, (bindingType ? "Binding" : "Assigning to") + " member expression"); }
    break

  case "ObjectPattern":
    for (var i = 0, list = expr.properties; i < list.length; i += 1)
      {
    var prop = list[i];

    this$1.checkLVal(prop.value, bindingType, checkClashes);
  }
    break

  case "ArrayPattern":
    for (var i$1 = 0, list$1 = expr.elements; i$1 < list$1.length; i$1 += 1) {
      var elem = list$1[i$1];

    if (elem) { this$1.checkLVal(elem, bindingType, checkClashes); }
    }
    break

  case "AssignmentPattern":
    this.checkLVal(expr.left, bindingType, checkClashes);
    break

  case "RestElement":
    this.checkLVal(expr.argument, bindingType, checkClashes);
    break

  case "ParenthesizedExpression":
    this.checkLVal(expr.expression, bindingType, checkClashes);
    break

  default:
    this.raise(expr.start, (bindingType ? "Binding" : "Assigning to") + " rvalue");
  }
};

// A recursive descent parser operates by defining functions for all
// syntactic elements, and recursively calling those, each function
// advancing the input stream and returning an AST node. Precedence
// of constructs (for example, the fact that `!x[1]` means `!(x[1])`
// instead of `(!x)[1]` is handled by the fact that the parser
// function that parses unary prefix operators is called first, and
// in turn calls the function that parses `[]` subscripts — that
// way, it'll receive the node for `x[1]` already parsed, and wraps
// *that* in the unary operator node.
//
// Acorn uses an [operator precedence parser][opp] to handle binary
// operator precedence, because it is much more compact than using
// the technique outlined above, which uses different, nesting
// functions to specify precedence, for all of the ten binary
// precedence levels that JavaScript defines.
//
// [opp]: http://en.wikipedia.org/wiki/Operator-precedence_parser

var pp$3 = Parser.prototype;

// Check if property name clashes with already added.
// Object/class getters and setters are not allowed to clash —
// either with each other or with an init property — and in
// strict mode, init properties are also not allowed to be repeated.

pp$3.checkPropClash = function(prop, propHash) {
  if (this.options.ecmaVersion >= 6 && (prop.computed || prop.method || prop.shorthand))
    { return }
  var key = prop.key;
  var name;
  switch (key.type) {
  case "Identifier": name = key.name; break
  case "Literal": name = String(key.value); break
  default: return
  }
  var kind = prop.kind;
  if (this.options.ecmaVersion >= 6) {
    if (name === "__proto__" && kind === "init") {
      if (propHash.proto) { this.raiseRecoverable(key.start, "Redefinition of __proto__ property"); }
      propHash.proto = true;
    }
    return
  }
  name = "$" + name;
  var other = propHash[name];
  if (other) {
    var redefinition;
    if (kind === "init") {
      redefinition = this.strict && other.init || other.get || other.set;
    } else {
      redefinition = other.init || other[kind];
    }
    if (redefinition)
      { this.raiseRecoverable(key.start, "Redefinition of property"); }
  } else {
    other = propHash[name] = {
      init: false,
      get: false,
      set: false
    };
  }
  other[kind] = true;
};

// ### Expression parsing

// These nest, from the most general expression type at the top to
// 'atomic', nondivisible expression types at the bottom. Most of
// the functions will simply let the function(s) below them parse,
// and, *if* the syntactic construct they handle is present, wrap
// the AST node that the inner parser gave them in another node.

// Parse a full expression. The optional arguments are used to
// forbid the `in` operator (in for loops initalization expressions)
// and provide reference for storing '=' operator inside shorthand
// property assignment in contexts where both object expression
// and object pattern might appear (so it's possible to raise
// delayed syntax error at correct position).

pp$3.parseExpression = function(noIn, refDestructuringErrors) {
  var this$1 = this;

  var startPos = this.start, startLoc = this.startLoc;
  var expr = this.parseMaybeAssign(noIn, refDestructuringErrors);
  if (this.type === types.comma) {
    var node = this.startNodeAt(startPos, startLoc);
    node.expressions = [expr];
    while (this.eat(types.comma)) { node.expressions.push(this$1.parseMaybeAssign(noIn, refDestructuringErrors)); }
    return this.finishNode(node, "SequenceExpression")
  }
  return expr
};

// Parse an assignment expression. This includes applications of
// operators like `+=`.

pp$3.parseMaybeAssign = function(noIn, refDestructuringErrors, afterLeftParse) {
  if (this.inGenerator && this.isContextual("yield")) { return this.parseYield() }

  var ownDestructuringErrors = false, oldParenAssign = -1, oldTrailingComma = -1;
  if (refDestructuringErrors) {
    oldParenAssign = refDestructuringErrors.parenthesizedAssign;
    oldTrailingComma = refDestructuringErrors.trailingComma;
    refDestructuringErrors.parenthesizedAssign = refDestructuringErrors.trailingComma = -1;
  } else {
    refDestructuringErrors = new DestructuringErrors;
    ownDestructuringErrors = true;
  }

  var startPos = this.start, startLoc = this.startLoc;
  if (this.type == types.parenL || this.type == types.name)
    { this.potentialArrowAt = this.start; }
  var left = this.parseMaybeConditional(noIn, refDestructuringErrors);
  if (afterLeftParse) { left = afterLeftParse.call(this, left, startPos, startLoc); }
  if (this.type.isAssign) {
    this.checkPatternErrors(refDestructuringErrors, true);
    if (!ownDestructuringErrors) { DestructuringErrors.call(refDestructuringErrors); }
    var node = this.startNodeAt(startPos, startLoc);
    node.operator = this.value;
    node.left = this.type === types.eq ? this.toAssignable(left) : left;
    refDestructuringErrors.shorthandAssign = -1; // reset because shorthand default was used correctly
    this.checkLVal(left);
    this.next();
    node.right = this.parseMaybeAssign(noIn);
    return this.finishNode(node, "AssignmentExpression")
  } else {
    if (ownDestructuringErrors) { this.checkExpressionErrors(refDestructuringErrors, true); }
  }
  if (oldParenAssign > -1) { refDestructuringErrors.parenthesizedAssign = oldParenAssign; }
  if (oldTrailingComma > -1) { refDestructuringErrors.trailingComma = oldTrailingComma; }
  return left
};

// Parse a ternary conditional (`?:`) operator.

pp$3.parseMaybeConditional = function(noIn, refDestructuringErrors) {
  var startPos = this.start, startLoc = this.startLoc;
  var expr = this.parseExprOps(noIn, refDestructuringErrors);
  if (this.checkExpressionErrors(refDestructuringErrors)) { return expr }
  if (this.eat(types.question)) {
    var node = this.startNodeAt(startPos, startLoc);
    node.test = expr;
    node.consequent = this.parseMaybeAssign();
    this.expect(types.colon);
    node.alternate = this.parseMaybeAssign(noIn);
    return this.finishNode(node, "ConditionalExpression")
  }
  return expr
};

// Start the precedence parser.

pp$3.parseExprOps = function(noIn, refDestructuringErrors) {
  var startPos = this.start, startLoc = this.startLoc;
  var expr = this.parseMaybeUnary(refDestructuringErrors, false);
  if (this.checkExpressionErrors(refDestructuringErrors)) { return expr }
  return expr.start == startPos && expr.type === "ArrowFunctionExpression" ? expr : this.parseExprOp(expr, startPos, startLoc, -1, noIn)
};

// Parse binary operators with the operator precedence parsing
// algorithm. `left` is the left-hand side of the operator.
// `minPrec` provides context that allows the function to stop and
// defer further parser to one of its callers when it encounters an
// operator that has a lower precedence than the set it is parsing.

pp$3.parseExprOp = function(left, leftStartPos, leftStartLoc, minPrec, noIn) {
  var prec = this.type.binop;
  if (prec != null && (!noIn || this.type !== types._in)) {
    if (prec > minPrec) {
      var logical = this.type === types.logicalOR || this.type === types.logicalAND;
      var op = this.value;
      this.next();
      var startPos = this.start, startLoc = this.startLoc;
      var right = this.parseExprOp(this.parseMaybeUnary(null, false), startPos, startLoc, prec, noIn);
      var node = this.buildBinary(leftStartPos, leftStartLoc, left, right, op, logical);
      return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec, noIn)
    }
  }
  return left
};

pp$3.buildBinary = function(startPos, startLoc, left, right, op, logical) {
  var node = this.startNodeAt(startPos, startLoc);
  node.left = left;
  node.operator = op;
  node.right = right;
  return this.finishNode(node, logical ? "LogicalExpression" : "BinaryExpression")
};

// Parse unary operators, both prefix and postfix.

pp$3.parseMaybeUnary = function(refDestructuringErrors, sawUnary) {
  var this$1 = this;

  var startPos = this.start, startLoc = this.startLoc, expr;
  if (this.inAsync && this.isContextual("await")) {
    expr = this.parseAwait();
    sawUnary = true;
  } else if (this.type.prefix) {
    var node = this.startNode(), update = this.type === types.incDec;
    node.operator = this.value;
    node.prefix = true;
    this.next();
    node.argument = this.parseMaybeUnary(null, true);
    this.checkExpressionErrors(refDestructuringErrors, true);
    if (update) { this.checkLVal(node.argument); }
    else if (this.strict && node.operator === "delete" &&
             node.argument.type === "Identifier")
      { this.raiseRecoverable(node.start, "Deleting local variable in strict mode"); }
    else { sawUnary = true; }
    expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression");
  } else {
    expr = this.parseExprSubscripts(refDestructuringErrors);
    if (this.checkExpressionErrors(refDestructuringErrors)) { return expr }
    while (this.type.postfix && !this.canInsertSemicolon()) {
      var node$1 = this$1.startNodeAt(startPos, startLoc);
      node$1.operator = this$1.value;
      node$1.prefix = false;
      node$1.argument = expr;
      this$1.checkLVal(expr);
      this$1.next();
      expr = this$1.finishNode(node$1, "UpdateExpression");
    }
  }

  if (!sawUnary && this.eat(types.starstar))
    { return this.buildBinary(startPos, startLoc, expr, this.parseMaybeUnary(null, false), "**", false) }
  else
    { return expr }
};

// Parse call, dot, and `[]`-subscript expressions.

pp$3.parseExprSubscripts = function(refDestructuringErrors) {
  var startPos = this.start, startLoc = this.startLoc;
  var expr = this.parseExprAtom(refDestructuringErrors);
  var skipArrowSubscripts = expr.type === "ArrowFunctionExpression" && this.input.slice(this.lastTokStart, this.lastTokEnd) !== ")";
  if (this.checkExpressionErrors(refDestructuringErrors) || skipArrowSubscripts) { return expr }
  var result = this.parseSubscripts(expr, startPos, startLoc);
  if (refDestructuringErrors && result.type === "MemberExpression") {
    if (refDestructuringErrors.parenthesizedAssign >= result.start) { refDestructuringErrors.parenthesizedAssign = -1; }
    if (refDestructuringErrors.parenthesizedBind >= result.start) { refDestructuringErrors.parenthesizedBind = -1; }
  }
  return result
};

pp$3.parseSubscripts = function(base, startPos, startLoc, noCalls) {
  var this$1 = this;

  var maybeAsyncArrow = this.options.ecmaVersion >= 8 && base.type === "Identifier" && base.name === "async" &&
      this.lastTokEnd == base.end && !this.canInsertSemicolon();
  for (var computed = (void 0);;) {
    if ((computed = this$1.eat(types.bracketL)) || this$1.eat(types.dot)) {
      var node = this$1.startNodeAt(startPos, startLoc);
      node.object = base;
      node.property = computed ? this$1.parseExpression() : this$1.parseIdent(true);
      node.computed = !!computed;
      if (computed) { this$1.expect(types.bracketR); }
      base = this$1.finishNode(node, "MemberExpression");
    } else if (!noCalls && this$1.eat(types.parenL)) {
      var refDestructuringErrors = new DestructuringErrors, oldYieldPos = this$1.yieldPos, oldAwaitPos = this$1.awaitPos;
      this$1.yieldPos = 0;
      this$1.awaitPos = 0;
      var exprList = this$1.parseExprList(types.parenR, this$1.options.ecmaVersion >= 8, false, refDestructuringErrors);
      if (maybeAsyncArrow && !this$1.canInsertSemicolon() && this$1.eat(types.arrow)) {
        this$1.checkPatternErrors(refDestructuringErrors, false);
        this$1.checkYieldAwaitInDefaultParams();
        this$1.yieldPos = oldYieldPos;
        this$1.awaitPos = oldAwaitPos;
        return this$1.parseArrowExpression(this$1.startNodeAt(startPos, startLoc), exprList, true)
      }
      this$1.checkExpressionErrors(refDestructuringErrors, true);
      this$1.yieldPos = oldYieldPos || this$1.yieldPos;
      this$1.awaitPos = oldAwaitPos || this$1.awaitPos;
      var node$1 = this$1.startNodeAt(startPos, startLoc);
      node$1.callee = base;
      node$1.arguments = exprList;
      base = this$1.finishNode(node$1, "CallExpression");
    } else if (this$1.type === types.backQuote) {
      var node$2 = this$1.startNodeAt(startPos, startLoc);
      node$2.tag = base;
      node$2.quasi = this$1.parseTemplate({isTagged: true});
      base = this$1.finishNode(node$2, "TaggedTemplateExpression");
    } else {
      return base
    }
  }
};

// Parse an atomic expression — either a single token that is an
// expression, an expression started by a keyword like `function` or
// `new`, or an expression wrapped in punctuation like `()`, `[]`,
// or `{}`.

pp$3.parseExprAtom = function(refDestructuringErrors) {
  var node, canBeArrow = this.potentialArrowAt == this.start;
  switch (this.type) {
  case types._super:
    if (!this.inFunction)
      { this.raise(this.start, "'super' outside of function or class"); }
    node = this.startNode();
    this.next();
    // The `super` keyword can appear at below:
    // SuperProperty:
    //     super [ Expression ]
    //     super . IdentifierName
    // SuperCall:
    //     super Arguments
    if (this.type !== types.dot && this.type !== types.bracketL && this.type !== types.parenL)
      { this.unexpected(); }
    return this.finishNode(node, "Super")

  case types._this:
    node = this.startNode();
    this.next();
    return this.finishNode(node, "ThisExpression")

  case types.name:
    var startPos = this.start, startLoc = this.startLoc;
    var id = this.parseIdent(this.type !== types.name);
    if (this.options.ecmaVersion >= 8 && id.name === "async" && !this.canInsertSemicolon() && this.eat(types._function))
      { return this.parseFunction(this.startNodeAt(startPos, startLoc), false, false, true) }
    if (canBeArrow && !this.canInsertSemicolon()) {
      if (this.eat(types.arrow))
        { return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], false) }
      if (this.options.ecmaVersion >= 8 && id.name === "async" && this.type === types.name) {
        id = this.parseIdent();
        if (this.canInsertSemicolon() || !this.eat(types.arrow))
          { this.unexpected(); }
        return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], true)
      }
    }
    return id

  case types.regexp:
    var value = this.value;
    node = this.parseLiteral(value.value);
    node.regex = {pattern: value.pattern, flags: value.flags};
    return node

  case types.num: case types.string:
    return this.parseLiteral(this.value)

  case types._null: case types._true: case types._false:
    node = this.startNode();
    node.value = this.type === types._null ? null : this.type === types._true;
    node.raw = this.type.keyword;
    this.next();
    return this.finishNode(node, "Literal")

  case types.parenL:
    var start = this.start, expr = this.parseParenAndDistinguishExpression(canBeArrow);
    if (refDestructuringErrors) {
      if (refDestructuringErrors.parenthesizedAssign < 0 && !this.isSimpleAssignTarget(expr))
        { refDestructuringErrors.parenthesizedAssign = start; }
      if (refDestructuringErrors.parenthesizedBind < 0)
        { refDestructuringErrors.parenthesizedBind = start; }
    }
    return expr

  case types.bracketL:
    node = this.startNode();
    this.next();
    node.elements = this.parseExprList(types.bracketR, true, true, refDestructuringErrors);
    return this.finishNode(node, "ArrayExpression")

  case types.braceL:
    return this.parseObj(false, refDestructuringErrors)

  case types._function:
    node = this.startNode();
    this.next();
    return this.parseFunction(node, false)

  case types._class:
    return this.parseClass(this.startNode(), false)

  case types._new:
    return this.parseNew()

  case types.backQuote:
    return this.parseTemplate()

  default:
    this.unexpected();
  }
};

pp$3.parseLiteral = function(value) {
  var node = this.startNode();
  node.value = value;
  node.raw = this.input.slice(this.start, this.end);
  this.next();
  return this.finishNode(node, "Literal")
};

pp$3.parseParenExpression = function() {
  this.expect(types.parenL);
  var val = this.parseExpression();
  this.expect(types.parenR);
  return val
};

pp$3.parseParenAndDistinguishExpression = function(canBeArrow) {
  var this$1 = this;

  var startPos = this.start, startLoc = this.startLoc, val, allowTrailingComma = this.options.ecmaVersion >= 8;
  if (this.options.ecmaVersion >= 6) {
    this.next();

    var innerStartPos = this.start, innerStartLoc = this.startLoc;
    var exprList = [], first = true, lastIsComma = false;
    var refDestructuringErrors = new DestructuringErrors, oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, spreadStart, innerParenStart;
    this.yieldPos = 0;
    this.awaitPos = 0;
    while (this.type !== types.parenR) {
      first ? first = false : this$1.expect(types.comma);
      if (allowTrailingComma && this$1.afterTrailingComma(types.parenR, true)) {
        lastIsComma = true;
        break
      } else if (this$1.type === types.ellipsis) {
        spreadStart = this$1.start;
        exprList.push(this$1.parseParenItem(this$1.parseRestBinding()));
        if (this$1.type === types.comma) { this$1.raise(this$1.start, "Comma is not permitted after the rest element"); }
        break
      } else {
        if (this$1.type === types.parenL && !innerParenStart) {
          innerParenStart = this$1.start;
        }
        exprList.push(this$1.parseMaybeAssign(false, refDestructuringErrors, this$1.parseParenItem));
      }
    }
    var innerEndPos = this.start, innerEndLoc = this.startLoc;
    this.expect(types.parenR);

    if (canBeArrow && !this.canInsertSemicolon() && this.eat(types.arrow)) {
      this.checkPatternErrors(refDestructuringErrors, false);
      this.checkYieldAwaitInDefaultParams();
      if (innerParenStart) { this.unexpected(innerParenStart); }
      this.yieldPos = oldYieldPos;
      this.awaitPos = oldAwaitPos;
      return this.parseParenArrowList(startPos, startLoc, exprList)
    }

    if (!exprList.length || lastIsComma) { this.unexpected(this.lastTokStart); }
    if (spreadStart) { this.unexpected(spreadStart); }
    this.checkExpressionErrors(refDestructuringErrors, true);
    this.yieldPos = oldYieldPos || this.yieldPos;
    this.awaitPos = oldAwaitPos || this.awaitPos;

    if (exprList.length > 1) {
      val = this.startNodeAt(innerStartPos, innerStartLoc);
      val.expressions = exprList;
      this.finishNodeAt(val, "SequenceExpression", innerEndPos, innerEndLoc);
    } else {
      val = exprList[0];
    }
  } else {
    val = this.parseParenExpression();
  }

  if (this.options.preserveParens) {
    var par = this.startNodeAt(startPos, startLoc);
    par.expression = val;
    return this.finishNode(par, "ParenthesizedExpression")
  } else {
    return val
  }
};

pp$3.parseParenItem = function(item) {
  return item
};

pp$3.parseParenArrowList = function(startPos, startLoc, exprList) {
  return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), exprList)
};

// New's precedence is slightly tricky. It must allow its argument to
// be a `[]` or dot subscript expression, but not a call — at least,
// not without wrapping it in parentheses. Thus, it uses the noCalls
// argument to parseSubscripts to prevent it from consuming the
// argument list.

var empty$1 = [];

pp$3.parseNew = function() {
  var node = this.startNode();
  var meta = this.parseIdent(true);
  if (this.options.ecmaVersion >= 6 && this.eat(types.dot)) {
    node.meta = meta;
    node.property = this.parseIdent(true);
    if (node.property.name !== "target")
      { this.raiseRecoverable(node.property.start, "The only valid meta property for new is new.target"); }
    if (!this.inFunction)
      { this.raiseRecoverable(node.start, "new.target can only be used in functions"); }
    return this.finishNode(node, "MetaProperty")
  }
  var startPos = this.start, startLoc = this.startLoc;
  node.callee = this.parseSubscripts(this.parseExprAtom(), startPos, startLoc, true);
  if (this.eat(types.parenL)) { node.arguments = this.parseExprList(types.parenR, this.options.ecmaVersion >= 8, false); }
  else { node.arguments = empty$1; }
  return this.finishNode(node, "NewExpression")
};

// Parse template expression.

pp$3.parseTemplateElement = function(ref) {
  var isTagged = ref.isTagged;

  var elem = this.startNode();
  if (this.type === types.invalidTemplate) {
    if (!isTagged) {
      this.raiseRecoverable(this.start, "Bad escape sequence in untagged template literal");
    }
    elem.value = {
      raw: this.value,
      cooked: null
    };
  } else {
    elem.value = {
      raw: this.input.slice(this.start, this.end).replace(/\r\n?/g, "\n"),
      cooked: this.value
    };
  }
  this.next();
  elem.tail = this.type === types.backQuote;
  return this.finishNode(elem, "TemplateElement")
};

pp$3.parseTemplate = function(ref) {
  var this$1 = this;
  if ( ref === void 0 ) { ref = {}; }
  var isTagged = ref.isTagged; if ( isTagged === void 0 ) { isTagged = false; }

  var node = this.startNode();
  this.next();
  node.expressions = [];
  var curElt = this.parseTemplateElement({isTagged: isTagged});
  node.quasis = [curElt];
  while (!curElt.tail) {
    this$1.expect(types.dollarBraceL);
    node.expressions.push(this$1.parseExpression());
    this$1.expect(types.braceR);
    node.quasis.push(curElt = this$1.parseTemplateElement({isTagged: isTagged}));
  }
  this.next();
  return this.finishNode(node, "TemplateLiteral")
};

pp$3.isAsyncProp = function(prop) {
  return !prop.computed && prop.key.type === "Identifier" && prop.key.name === "async" &&
    (this.type === types.name || this.type === types.num || this.type === types.string || this.type === types.bracketL || this.type.keyword) &&
    !lineBreak.test(this.input.slice(this.lastTokEnd, this.start))
};

// Parse an object literal or binding pattern.

pp$3.parseObj = function(isPattern, refDestructuringErrors) {
  var this$1 = this;

  var node = this.startNode(), first = true, propHash = {};
  node.properties = [];
  this.next();
  while (!this.eat(types.braceR)) {
    if (!first) {
      this$1.expect(types.comma);
      if (this$1.afterTrailingComma(types.braceR)) { break }
    } else { first = false; }

    var prop = this$1.parseProperty(isPattern, refDestructuringErrors);
    this$1.checkPropClash(prop, propHash);
    node.properties.push(prop);
  }
  return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression")
};

pp$3.parseProperty = function(isPattern, refDestructuringErrors) {
  var prop = this.startNode(), isGenerator, isAsync, startPos, startLoc;
  if (this.options.ecmaVersion >= 6) {
    prop.method = false;
    prop.shorthand = false;
    if (isPattern || refDestructuringErrors) {
      startPos = this.start;
      startLoc = this.startLoc;
    }
    if (!isPattern)
      { isGenerator = this.eat(types.star); }
  }
  this.parsePropertyName(prop);
  if (!isPattern && this.options.ecmaVersion >= 8 && !isGenerator && this.isAsyncProp(prop)) {
    isAsync = true;
    this.parsePropertyName(prop, refDestructuringErrors);
  } else {
    isAsync = false;
  }
  this.parsePropertyValue(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors);
  return this.finishNode(prop, "Property")
};

pp$3.parsePropertyValue = function(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors) {
  if ((isGenerator || isAsync) && this.type === types.colon)
    { this.unexpected(); }

  if (this.eat(types.colon)) {
    prop.value = isPattern ? this.parseMaybeDefault(this.start, this.startLoc) : this.parseMaybeAssign(false, refDestructuringErrors);
    prop.kind = "init";
  } else if (this.options.ecmaVersion >= 6 && this.type === types.parenL) {
    if (isPattern) { this.unexpected(); }
    prop.kind = "init";
    prop.method = true;
    prop.value = this.parseMethod(isGenerator, isAsync);
  } else if (!isPattern &&
             this.options.ecmaVersion >= 5 && !prop.computed && prop.key.type === "Identifier" &&
             (prop.key.name === "get" || prop.key.name === "set") &&
             (this.type != types.comma && this.type != types.braceR)) {
    if (isGenerator || isAsync) { this.unexpected(); }
    prop.kind = prop.key.name;
    this.parsePropertyName(prop);
    prop.value = this.parseMethod(false);
    var paramCount = prop.kind === "get" ? 0 : 1;
    if (prop.value.params.length !== paramCount) {
      var start = prop.value.start;
      if (prop.kind === "get")
        { this.raiseRecoverable(start, "getter should have no params"); }
      else
        { this.raiseRecoverable(start, "setter should have exactly one param"); }
    } else {
      if (prop.kind === "set" && prop.value.params[0].type === "RestElement")
        { this.raiseRecoverable(prop.value.params[0].start, "Setter cannot use rest params"); }
    }
  } else if (this.options.ecmaVersion >= 6 && !prop.computed && prop.key.type === "Identifier") {
    this.checkUnreserved(prop.key);
    prop.kind = "init";
    if (isPattern) {
      prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key);
    } else if (this.type === types.eq && refDestructuringErrors) {
      if (refDestructuringErrors.shorthandAssign < 0)
        { refDestructuringErrors.shorthandAssign = this.start; }
      prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key);
    } else {
      prop.value = prop.key;
    }
    prop.shorthand = true;
  } else { this.unexpected(); }
};

pp$3.parsePropertyName = function(prop) {
  if (this.options.ecmaVersion >= 6) {
    if (this.eat(types.bracketL)) {
      prop.computed = true;
      prop.key = this.parseMaybeAssign();
      this.expect(types.bracketR);
      return prop.key
    } else {
      prop.computed = false;
    }
  }
  return prop.key = this.type === types.num || this.type === types.string ? this.parseExprAtom() : this.parseIdent(true)
};

// Initialize empty function node.

pp$3.initFunction = function(node) {
  node.id = null;
  if (this.options.ecmaVersion >= 6) {
    node.generator = false;
    node.expression = false;
  }
  if (this.options.ecmaVersion >= 8)
    { node.async = false; }
};

// Parse object or class method.

pp$3.parseMethod = function(isGenerator, isAsync) {
  var node = this.startNode(), oldInGen = this.inGenerator, oldInAsync = this.inAsync,
      oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldInFunc = this.inFunction;

  this.initFunction(node);
  if (this.options.ecmaVersion >= 6)
    { node.generator = isGenerator; }
  if (this.options.ecmaVersion >= 8)
    { node.async = !!isAsync; }

  this.inGenerator = node.generator;
  this.inAsync = node.async;
  this.yieldPos = 0;
  this.awaitPos = 0;
  this.inFunction = true;
  this.enterFunctionScope();

  this.expect(types.parenL);
  node.params = this.parseBindingList(types.parenR, false, this.options.ecmaVersion >= 8);
  this.checkYieldAwaitInDefaultParams();
  this.parseFunctionBody(node, false);

  this.inGenerator = oldInGen;
  this.inAsync = oldInAsync;
  this.yieldPos = oldYieldPos;
  this.awaitPos = oldAwaitPos;
  this.inFunction = oldInFunc;
  return this.finishNode(node, "FunctionExpression")
};

// Parse arrow function expression with given parameters.

pp$3.parseArrowExpression = function(node, params, isAsync) {
  var oldInGen = this.inGenerator, oldInAsync = this.inAsync,
      oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, oldInFunc = this.inFunction;

  this.enterFunctionScope();
  this.initFunction(node);
  if (this.options.ecmaVersion >= 8)
    { node.async = !!isAsync; }

  this.inGenerator = false;
  this.inAsync = node.async;
  this.yieldPos = 0;
  this.awaitPos = 0;
  this.inFunction = true;

  node.params = this.toAssignableList(params, true);
  this.parseFunctionBody(node, true);

  this.inGenerator = oldInGen;
  this.inAsync = oldInAsync;
  this.yieldPos = oldYieldPos;
  this.awaitPos = oldAwaitPos;
  this.inFunction = oldInFunc;
  return this.finishNode(node, "ArrowFunctionExpression")
};

// Parse function body and check parameters.

pp$3.parseFunctionBody = function(node, isArrowFunction) {
  var isExpression = isArrowFunction && this.type !== types.braceL;
  var oldStrict = this.strict, useStrict = false;

  if (isExpression) {
    node.body = this.parseMaybeAssign();
    node.expression = true;
    this.checkParams(node, false);
  } else {
    var nonSimple = this.options.ecmaVersion >= 7 && !this.isSimpleParamList(node.params);
    if (!oldStrict || nonSimple) {
      useStrict = this.strictDirective(this.end);
      // If this is a strict mode function, verify that argument names
      // are not repeated, and it does not try to bind the words `eval`
      // or `arguments`.
      if (useStrict && nonSimple)
        { this.raiseRecoverable(node.start, "Illegal 'use strict' directive in function with non-simple parameter list"); }
    }
    // Start a new scope with regard to labels and the `inFunction`
    // flag (restore them to their old value afterwards).
    var oldLabels = this.labels;
    this.labels = [];
    if (useStrict) { this.strict = true; }

    // Add the params to varDeclaredNames to ensure that an error is thrown
    // if a let/const declaration in the function clashes with one of the params.
    this.checkParams(node, !oldStrict && !useStrict && !isArrowFunction && this.isSimpleParamList(node.params));
    node.body = this.parseBlock(false);
    node.expression = false;
    this.adaptDirectivePrologue(node.body.body);
    this.labels = oldLabels;
  }
  this.exitFunctionScope();

  if (this.strict && node.id) {
    // Ensure the function name isn't a forbidden identifier in strict mode, e.g. 'eval'
    this.checkLVal(node.id, "none");
  }
  this.strict = oldStrict;
};

pp$3.isSimpleParamList = function(params) {
  for (var i = 0, list = params; i < list.length; i += 1)
    {
    var param = list[i];

    if (param.type !== "Identifier") { return false
  } }
  return true
};

// Checks function params for various disallowed patterns such as using "eval"
// or "arguments" and duplicate parameters.

pp$3.checkParams = function(node, allowDuplicates) {
  var this$1 = this;

  var nameHash = {};
  for (var i = 0, list = node.params; i < list.length; i += 1)
    {
    var param = list[i];

    this$1.checkLVal(param, "var", allowDuplicates ? null : nameHash);
  }
};

// Parses a comma-separated list of expressions, and returns them as
// an array. `close` is the token type that ends the list, and
// `allowEmpty` can be turned on to allow subsequent commas with
// nothing in between them to be parsed as `null` (which is needed
// for array literals).

pp$3.parseExprList = function(close, allowTrailingComma, allowEmpty, refDestructuringErrors) {
  var this$1 = this;

  var elts = [], first = true;
  while (!this.eat(close)) {
    if (!first) {
      this$1.expect(types.comma);
      if (allowTrailingComma && this$1.afterTrailingComma(close)) { break }
    } else { first = false; }

    var elt = (void 0);
    if (allowEmpty && this$1.type === types.comma)
      { elt = null; }
    else if (this$1.type === types.ellipsis) {
      elt = this$1.parseSpread(refDestructuringErrors);
      if (refDestructuringErrors && this$1.type === types.comma && refDestructuringErrors.trailingComma < 0)
        { refDestructuringErrors.trailingComma = this$1.start; }
    } else {
      elt = this$1.parseMaybeAssign(false, refDestructuringErrors);
    }
    elts.push(elt);
  }
  return elts
};

pp$3.checkUnreserved = function(ref) {
  var start = ref.start;
  var end = ref.end;
  var name = ref.name;

  if (this.inGenerator && name === "yield")
    { this.raiseRecoverable(start, "Can not use 'yield' as identifier inside a generator"); }
  if (this.inAsync && name === "await")
    { this.raiseRecoverable(start, "Can not use 'await' as identifier inside an async function"); }
  if (this.isKeyword(name))
    { this.raise(start, ("Unexpected keyword '" + name + "'")); }
  if (this.options.ecmaVersion < 6 &&
    this.input.slice(start, end).indexOf("\\") != -1) { return }
  var re = this.strict ? this.reservedWordsStrict : this.reservedWords;
  if (re.test(name))
    { this.raiseRecoverable(start, ("The keyword '" + name + "' is reserved")); }
};

// Parse the next token as an identifier. If `liberal` is true (used
// when parsing properties), it will also convert keywords into
// identifiers.

pp$3.parseIdent = function(liberal, isBinding) {
  var node = this.startNode();
  if (liberal && this.options.allowReserved == "never") { liberal = false; }
  if (this.type === types.name) {
    node.name = this.value;
  } else if (this.type.keyword) {
    node.name = this.type.keyword;

    // To fix https://github.com/ternjs/acorn/issues/575
    // `class` and `function` keywords push new context into this.context.
    // But there is no chance to pop the context if the keyword is consumed as an identifier such as a property name.
    // If the previous token is a dot, this does not apply because the context-managing code already ignored the keyword
    if ((node.name === "class" || node.name === "function") &&
        (this.lastTokEnd !== this.lastTokStart + 1 || this.input.charCodeAt(this.lastTokStart) !== 46)) {
      this.context.pop();
    }
  } else {
    this.unexpected();
  }
  this.next();
  this.finishNode(node, "Identifier");
  if (!liberal) { this.checkUnreserved(node); }
  return node
};

// Parses yield expression inside generator.

pp$3.parseYield = function() {
  if (!this.yieldPos) { this.yieldPos = this.start; }

  var node = this.startNode();
  this.next();
  if (this.type == types.semi || this.canInsertSemicolon() || (this.type != types.star && !this.type.startsExpr)) {
    node.delegate = false;
    node.argument = null;
  } else {
    node.delegate = this.eat(types.star);
    node.argument = this.parseMaybeAssign();
  }
  return this.finishNode(node, "YieldExpression")
};

pp$3.parseAwait = function() {
  if (!this.awaitPos) { this.awaitPos = this.start; }

  var node = this.startNode();
  this.next();
  node.argument = this.parseMaybeUnary(null, true);
  return this.finishNode(node, "AwaitExpression")
};

var pp$4 = Parser.prototype;

// This function is used to raise exceptions on parse errors. It
// takes an offset integer (into the current `input`) to indicate
// the location of the error, attaches the position to the end
// of the error message, and then raises a `SyntaxError` with that
// message.

pp$4.raise = function(pos, message) {
  var loc = getLineInfo(this.input, pos);
  message += " (" + loc.line + ":" + loc.column + ")";
  var err = new SyntaxError(message);
  err.pos = pos; err.loc = loc; err.raisedAt = this.pos;
  throw err
};

pp$4.raiseRecoverable = pp$4.raise;

pp$4.curPosition = function() {
  if (this.options.locations) {
    return new Position(this.curLine, this.pos - this.lineStart)
  }
};

var pp$5 = Parser.prototype;

// Object.assign polyfill
var assign = Object.assign || function(target) {
  var sources = [], len = arguments.length - 1;
  while ( len-- > 0 ) { sources[ len ] = arguments[ len + 1 ]; }

  for (var i = 0, list = sources; i < list.length; i += 1) {
    var source = list[i];

    for (var key in source) {
      if (has(source, key)) {
        target[key] = source[key];
      }
    }
  }
  return target
};

// The functions in this module keep track of declared variables in the current scope in order to detect duplicate variable names.

pp$5.enterFunctionScope = function() {
  // var: a hash of var-declared names in the current lexical scope
  // lexical: a hash of lexically-declared names in the current lexical scope
  // childVar: a hash of var-declared names in all child lexical scopes of the current lexical scope (within the current function scope)
  // parentLexical: a hash of lexically-declared names in all parent lexical scopes of the current lexical scope (within the current function scope)
  this.scopeStack.push({var: {}, lexical: {}, childVar: {}, parentLexical: {}});
};

pp$5.exitFunctionScope = function() {
  this.scopeStack.pop();
};

pp$5.enterLexicalScope = function() {
  var parentScope = this.scopeStack[this.scopeStack.length - 1];
  var childScope = {var: {}, lexical: {}, childVar: {}, parentLexical: {}};

  this.scopeStack.push(childScope);
  assign(childScope.parentLexical, parentScope.lexical, parentScope.parentLexical);
};

pp$5.exitLexicalScope = function() {
  var childScope = this.scopeStack.pop();
  var parentScope = this.scopeStack[this.scopeStack.length - 1];

  assign(parentScope.childVar, childScope.var, childScope.childVar);
};

/**
 * A name can be declared with `var` if there are no variables with the same name declared with `let`/`const`
 * in the current lexical scope or any of the parent lexical scopes in this function.
 */
pp$5.canDeclareVarName = function(name) {
  var currentScope = this.scopeStack[this.scopeStack.length - 1];

  return !has(currentScope.lexical, name) && !has(currentScope.parentLexical, name)
};

/**
 * A name can be declared with `let`/`const` if there are no variables with the same name declared with `let`/`const`
 * in the current scope, and there are no variables with the same name declared with `var` in the current scope or in
 * any child lexical scopes in this function.
 */
pp$5.canDeclareLexicalName = function(name) {
  var currentScope = this.scopeStack[this.scopeStack.length - 1];

  return !has(currentScope.lexical, name) && !has(currentScope.var, name) && !has(currentScope.childVar, name)
};

pp$5.declareVarName = function(name) {
  this.scopeStack[this.scopeStack.length - 1].var[name] = true;
};

pp$5.declareLexicalName = function(name) {
  this.scopeStack[this.scopeStack.length - 1].lexical[name] = true;
};

var Node = function Node(parser, pos, loc) {
  this.type = "";
  this.start = pos;
  this.end = 0;
  if (parser.options.locations)
    { this.loc = new SourceLocation(parser, loc); }
  if (parser.options.directSourceFile)
    { this.sourceFile = parser.options.directSourceFile; }
  if (parser.options.ranges)
    { this.range = [pos, 0]; }
};

// Start an AST node, attaching a start offset.

var pp$6 = Parser.prototype;

pp$6.startNode = function() {
  return new Node(this, this.start, this.startLoc)
};

pp$6.startNodeAt = function(pos, loc) {
  return new Node(this, pos, loc)
};

// Finish an AST node, adding `type` and `end` properties.

function finishNodeAt(node, type, pos, loc) {
  node.type = type;
  node.end = pos;
  if (this.options.locations)
    { node.loc.end = loc; }
  if (this.options.ranges)
    { node.range[1] = pos; }
  return node
}

pp$6.finishNode = function(node, type) {
  return finishNodeAt.call(this, node, type, this.lastTokEnd, this.lastTokEndLoc)
};

// Finish node at given position

pp$6.finishNodeAt = function(node, type, pos, loc) {
  return finishNodeAt.call(this, node, type, pos, loc)
};

// The algorithm used to determine whether a regexp can appear at a
// given point in the program is loosely based on sweet.js' approach.
// See https://github.com/mozilla/sweet.js/wiki/design

var TokContext = function TokContext(token, isExpr, preserveSpace, override, generator) {
  this.token = token;
  this.isExpr = !!isExpr;
  this.preserveSpace = !!preserveSpace;
  this.override = override;
  this.generator = !!generator;
};

var types$1 = {
  b_stat: new TokContext("{", false),
  b_expr: new TokContext("{", true),
  b_tmpl: new TokContext("${", false),
  p_stat: new TokContext("(", false),
  p_expr: new TokContext("(", true),
  q_tmpl: new TokContext("`", true, true, function (p) { return p.tryReadTemplateToken(); }),
  f_stat: new TokContext("function", false),
  f_expr: new TokContext("function", true),
  f_expr_gen: new TokContext("function", true, false, null, true),
  f_gen: new TokContext("function", false, false, null, true)
};

var pp$7 = Parser.prototype;

pp$7.initialContext = function() {
  return [types$1.b_stat]
};

pp$7.braceIsBlock = function(prevType) {
  var parent = this.curContext();
  if (parent === types$1.f_expr || parent === types$1.f_stat)
    { return true }
  if (prevType === types.colon && (parent === types$1.b_stat || parent === types$1.b_expr))
    { return !parent.isExpr }

  // The check for `tt.name && exprAllowed` detects whether we are
  // after a `yield` or `of` construct. See the `updateContext` for
  // `tt.name`.
  if (prevType === types._return || prevType == types.name && this.exprAllowed)
    { return lineBreak.test(this.input.slice(this.lastTokEnd, this.start)) }
  if (prevType === types._else || prevType === types.semi || prevType === types.eof || prevType === types.parenR || prevType == types.arrow)
    { return true }
  if (prevType == types.braceL)
    { return parent === types$1.b_stat }
  if (prevType == types._var || prevType == types.name)
    { return false }
  return !this.exprAllowed
};

pp$7.inGeneratorContext = function() {
  var this$1 = this;

  for (var i = this.context.length - 1; i >= 1; i--) {
    var context = this$1.context[i];
    if (context.token === "function")
      { return context.generator }
  }
  return false
};

pp$7.updateContext = function(prevType) {
  var update, type = this.type;
  if (type.keyword && prevType == types.dot)
    { this.exprAllowed = false; }
  else if (update = type.updateContext)
    { update.call(this, prevType); }
  else
    { this.exprAllowed = type.beforeExpr; }
};

// Token-specific context update code

types.parenR.updateContext = types.braceR.updateContext = function() {
  if (this.context.length == 1) {
    this.exprAllowed = true;
    return
  }
  var out = this.context.pop();
  if (out === types$1.b_stat && this.curContext().token === "function") {
    out = this.context.pop();
  }
  this.exprAllowed = !out.isExpr;
};

types.braceL.updateContext = function(prevType) {
  this.context.push(this.braceIsBlock(prevType) ? types$1.b_stat : types$1.b_expr);
  this.exprAllowed = true;
};

types.dollarBraceL.updateContext = function() {
  this.context.push(types$1.b_tmpl);
  this.exprAllowed = true;
};

types.parenL.updateContext = function(prevType) {
  var statementParens = prevType === types._if || prevType === types._for || prevType === types._with || prevType === types._while;
  this.context.push(statementParens ? types$1.p_stat : types$1.p_expr);
  this.exprAllowed = true;
};

types.incDec.updateContext = function() {
  // tokExprAllowed stays unchanged
};

types._function.updateContext = types._class.updateContext = function(prevType) {
  if (prevType.beforeExpr && prevType !== types.semi && prevType !== types._else &&
      !((prevType === types.colon || prevType === types.braceL) && this.curContext() === types$1.b_stat))
    { this.context.push(types$1.f_expr); }
  else
    { this.context.push(types$1.f_stat); }
  this.exprAllowed = false;
};

types.backQuote.updateContext = function() {
  if (this.curContext() === types$1.q_tmpl)
    { this.context.pop(); }
  else
    { this.context.push(types$1.q_tmpl); }
  this.exprAllowed = false;
};

types.star.updateContext = function(prevType) {
  if (prevType == types._function) {
    var index = this.context.length - 1;
    if (this.context[index] === types$1.f_expr)
      { this.context[index] = types$1.f_expr_gen; }
    else
      { this.context[index] = types$1.f_gen; }
  }
  this.exprAllowed = true;
};

types.name.updateContext = function(prevType) {
  var allowed = false;
  if (this.options.ecmaVersion >= 6) {
    if (this.value == "of" && !this.exprAllowed ||
        this.value == "yield" && this.inGeneratorContext())
      { allowed = true; }
  }
  this.exprAllowed = allowed;
};

// Object type used to represent tokens. Note that normally, tokens
// simply exist as properties on the parser object. This is only
// used for the onToken callback and the external tokenizer.

var Token = function Token(p) {
  this.type = p.type;
  this.value = p.value;
  this.start = p.start;
  this.end = p.end;
  if (p.options.locations)
    { this.loc = new SourceLocation(p, p.startLoc, p.endLoc); }
  if (p.options.ranges)
    { this.range = [p.start, p.end]; }
};

// ## Tokenizer

var pp$8 = Parser.prototype;

// Are we running under Rhino?
var isRhino = typeof Packages == "object" && Object.prototype.toString.call(Packages) == "[object JavaPackage]";

// Move to the next token

pp$8.next = function() {
  if (this.options.onToken)
    { this.options.onToken(new Token(this)); }

  this.lastTokEnd = this.end;
  this.lastTokStart = this.start;
  this.lastTokEndLoc = this.endLoc;
  this.lastTokStartLoc = this.startLoc;
  this.nextToken();
};

pp$8.getToken = function() {
  this.next();
  return new Token(this)
};

// If we're in an ES6 environment, make parsers iterable
if (typeof Symbol !== "undefined")
  { pp$8[Symbol.iterator] = function() {
    var this$1 = this;

    return {
      next: function () {
        var token = this$1.getToken();
        return {
          done: token.type === types.eof,
          value: token
        }
      }
    }
  }; }

// Toggle strict mode. Re-reads the next number or string to please
// pedantic tests (`"use strict"; 010;` should fail).

pp$8.curContext = function() {
  return this.context[this.context.length - 1]
};

// Read a single token, updating the parser object's token-related
// properties.

pp$8.nextToken = function() {
  var curContext = this.curContext();
  if (!curContext || !curContext.preserveSpace) { this.skipSpace(); }

  this.start = this.pos;
  if (this.options.locations) { this.startLoc = this.curPosition(); }
  if (this.pos >= this.input.length) { return this.finishToken(types.eof) }

  if (curContext.override) { return curContext.override(this) }
  else { this.readToken(this.fullCharCodeAtPos()); }
};

pp$8.readToken = function(code) {
  // Identifier or keyword. '\uXXXX' sequences are allowed in
  // identifiers, so '\' also dispatches to that.
  if (isIdentifierStart(code, this.options.ecmaVersion >= 6) || code === 92 /* '\' */)
    { return this.readWord() }

  return this.getTokenFromCode(code)
};

pp$8.fullCharCodeAtPos = function() {
  var code = this.input.charCodeAt(this.pos);
  if (code <= 0xd7ff || code >= 0xe000) { return code }
  var next = this.input.charCodeAt(this.pos + 1);
  return (code << 10) + next - 0x35fdc00
};

pp$8.skipBlockComment = function() {
  var this$1 = this;

  var startLoc = this.options.onComment && this.curPosition();
  var start = this.pos, end = this.input.indexOf("*/", this.pos += 2);
  if (end === -1) { this.raise(this.pos - 2, "Unterminated comment"); }
  this.pos = end + 2;
  if (this.options.locations) {
    lineBreakG.lastIndex = start;
    var match;
    while ((match = lineBreakG.exec(this.input)) && match.index < this.pos) {
      ++this$1.curLine;
      this$1.lineStart = match.index + match[0].length;
    }
  }
  if (this.options.onComment)
    { this.options.onComment(true, this.input.slice(start + 2, end), start, this.pos,
                           startLoc, this.curPosition()); }
};

pp$8.skipLineComment = function(startSkip) {
  var this$1 = this;

  var start = this.pos;
  var startLoc = this.options.onComment && this.curPosition();
  var ch = this.input.charCodeAt(this.pos += startSkip);
  while (this.pos < this.input.length && !isNewLine(ch)) {
    ch = this$1.input.charCodeAt(++this$1.pos);
  }
  if (this.options.onComment)
    { this.options.onComment(false, this.input.slice(start + startSkip, this.pos), start, this.pos,
                           startLoc, this.curPosition()); }
};

// Called at the start of the parse and after every token. Skips
// whitespace and comments, and.

pp$8.skipSpace = function() {
  var this$1 = this;

  loop: while (this.pos < this.input.length) {
    var ch = this$1.input.charCodeAt(this$1.pos);
    switch (ch) {
    case 32: case 160: // ' '
      ++this$1.pos;
      break
    case 13:
      if (this$1.input.charCodeAt(this$1.pos + 1) === 10) {
        ++this$1.pos;
      }
    case 10: case 8232: case 8233:
      ++this$1.pos;
      if (this$1.options.locations) {
        ++this$1.curLine;
        this$1.lineStart = this$1.pos;
      }
      break
    case 47: // '/'
      switch (this$1.input.charCodeAt(this$1.pos + 1)) {
      case 42: // '*'
        this$1.skipBlockComment();
        break
      case 47:
        this$1.skipLineComment(2);
        break
      default:
        break loop
      }
      break
    default:
      if (ch > 8 && ch < 14 || ch >= 5760 && nonASCIIwhitespace.test(String.fromCharCode(ch))) {
        ++this$1.pos;
      } else {
        break loop
      }
    }
  }
};

// Called at the end of every token. Sets `end`, `val`, and
// maintains `context` and `exprAllowed`, and skips the space after
// the token, so that the next one's `start` will point at the
// right position.

pp$8.finishToken = function(type, val) {
  this.end = this.pos;
  if (this.options.locations) { this.endLoc = this.curPosition(); }
  var prevType = this.type;
  this.type = type;
  this.value = val;

  this.updateContext(prevType);
};

// ### Token reading

// This is the function that is called to fetch the next token. It
// is somewhat obscure, because it works in character codes rather
// than characters, and because operator parsing has been inlined
// into it.
//
// All in the name of speed.
//
pp$8.readToken_dot = function() {
  var next = this.input.charCodeAt(this.pos + 1);
  if (next >= 48 && next <= 57) { return this.readNumber(true) }
  var next2 = this.input.charCodeAt(this.pos + 2);
  if (this.options.ecmaVersion >= 6 && next === 46 && next2 === 46) { // 46 = dot '.'
    this.pos += 3;
    return this.finishToken(types.ellipsis)
  } else {
    ++this.pos;
    return this.finishToken(types.dot)
  }
};

pp$8.readToken_slash = function() { // '/'
  var next = this.input.charCodeAt(this.pos + 1);
  if (this.exprAllowed) { ++this.pos; return this.readRegexp() }
  if (next === 61) { return this.finishOp(types.assign, 2) }
  return this.finishOp(types.slash, 1)
};

pp$8.readToken_mult_modulo_exp = function(code) { // '%*'
  var next = this.input.charCodeAt(this.pos + 1);
  var size = 1;
  var tokentype = code === 42 ? types.star : types.modulo;

  // exponentiation operator ** and **=
  if (this.options.ecmaVersion >= 7 && code == 42 && next === 42) {
    ++size;
    tokentype = types.starstar;
    next = this.input.charCodeAt(this.pos + 2);
  }

  if (next === 61) { return this.finishOp(types.assign, size + 1) }
  return this.finishOp(tokentype, size)
};

pp$8.readToken_pipe_amp = function(code) { // '|&'
  var next = this.input.charCodeAt(this.pos + 1);
  if (next === code) { return this.finishOp(code === 124 ? types.logicalOR : types.logicalAND, 2) }
  if (next === 61) { return this.finishOp(types.assign, 2) }
  return this.finishOp(code === 124 ? types.bitwiseOR : types.bitwiseAND, 1)
};

pp$8.readToken_caret = function() { // '^'
  var next = this.input.charCodeAt(this.pos + 1);
  if (next === 61) { return this.finishOp(types.assign, 2) }
  return this.finishOp(types.bitwiseXOR, 1)
};

pp$8.readToken_plus_min = function(code) { // '+-'
  var next = this.input.charCodeAt(this.pos + 1);
  if (next === code) {
    if (next == 45 && !this.inModule && this.input.charCodeAt(this.pos + 2) == 62 &&
        (this.lastTokEnd === 0 || lineBreak.test(this.input.slice(this.lastTokEnd, this.pos)))) {
      // A `-->` line comment
      this.skipLineComment(3);
      this.skipSpace();
      return this.nextToken()
    }
    return this.finishOp(types.incDec, 2)
  }
  if (next === 61) { return this.finishOp(types.assign, 2) }
  return this.finishOp(types.plusMin, 1)
};

pp$8.readToken_lt_gt = function(code) { // '<>'
  var next = this.input.charCodeAt(this.pos + 1);
  var size = 1;
  if (next === code) {
    size = code === 62 && this.input.charCodeAt(this.pos + 2) === 62 ? 3 : 2;
    if (this.input.charCodeAt(this.pos + size) === 61) { return this.finishOp(types.assign, size + 1) }
    return this.finishOp(types.bitShift, size)
  }
  if (next == 33 && code == 60 && !this.inModule && this.input.charCodeAt(this.pos + 2) == 45 &&
      this.input.charCodeAt(this.pos + 3) == 45) {
    // `<!--`, an XML-style comment that should be interpreted as a line comment
    this.skipLineComment(4);
    this.skipSpace();
    return this.nextToken()
  }
  if (next === 61) { size = 2; }
  return this.finishOp(types.relational, size)
};

pp$8.readToken_eq_excl = function(code) { // '=!'
  var next = this.input.charCodeAt(this.pos + 1);
  if (next === 61) { return this.finishOp(types.equality, this.input.charCodeAt(this.pos + 2) === 61 ? 3 : 2) }
  if (code === 61 && next === 62 && this.options.ecmaVersion >= 6) { // '=>'
    this.pos += 2;
    return this.finishToken(types.arrow)
  }
  return this.finishOp(code === 61 ? types.eq : types.prefix, 1)
};

pp$8.getTokenFromCode = function(code) {
  switch (code) {
    // The interpretation of a dot depends on whether it is followed
    // by a digit or another two dots.
  case 46: // '.'
    return this.readToken_dot()

    // Punctuation tokens.
  case 40: ++this.pos; return this.finishToken(types.parenL)
  case 41: ++this.pos; return this.finishToken(types.parenR)
  case 59: ++this.pos; return this.finishToken(types.semi)
  case 44: ++this.pos; return this.finishToken(types.comma)
  case 91: ++this.pos; return this.finishToken(types.bracketL)
  case 93: ++this.pos; return this.finishToken(types.bracketR)
  case 123: ++this.pos; return this.finishToken(types.braceL)
  case 125: ++this.pos; return this.finishToken(types.braceR)
  case 58: ++this.pos; return this.finishToken(types.colon)
  case 63: ++this.pos; return this.finishToken(types.question)

  case 96: // '`'
    if (this.options.ecmaVersion < 6) { break }
    ++this.pos;
    return this.finishToken(types.backQuote)

  case 48: // '0'
    var next = this.input.charCodeAt(this.pos + 1);
    if (next === 120 || next === 88) { return this.readRadixNumber(16) } // '0x', '0X' - hex number
    if (this.options.ecmaVersion >= 6) {
      if (next === 111 || next === 79) { return this.readRadixNumber(8) } // '0o', '0O' - octal number
      if (next === 98 || next === 66) { return this.readRadixNumber(2) } // '0b', '0B' - binary number
    }
    // Anything else beginning with a digit is an integer, octal
    // number, or float.
  case 49: case 50: case 51: case 52: case 53: case 54: case 55: case 56: case 57: // 1-9
    return this.readNumber(false)

    // Quotes produce strings.
  case 34: case 39: // '"', "'"
    return this.readString(code)

    // Operators are parsed inline in tiny state machines. '=' (61) is
    // often referred to. `finishOp` simply skips the amount of
    // characters it is given as second argument, and returns a token
    // of the type given by its first argument.

  case 47: // '/'
    return this.readToken_slash()

  case 37: case 42: // '%*'
    return this.readToken_mult_modulo_exp(code)

  case 124: case 38: // '|&'
    return this.readToken_pipe_amp(code)

  case 94: // '^'
    return this.readToken_caret()

  case 43: case 45: // '+-'
    return this.readToken_plus_min(code)

  case 60: case 62: // '<>'
    return this.readToken_lt_gt(code)

  case 61: case 33: // '=!'
    return this.readToken_eq_excl(code)

  case 126: // '~'
    return this.finishOp(types.prefix, 1)
  }

  this.raise(this.pos, "Unexpected character '" + codePointToString(code) + "'");
};

pp$8.finishOp = function(type, size) {
  var str = this.input.slice(this.pos, this.pos + size);
  this.pos += size;
  return this.finishToken(type, str)
};

// Parse a regular expression. Some context-awareness is necessary,
// since a '/' inside a '[]' set does not end the expression.

function tryCreateRegexp(src, flags, throwErrorAt, parser) {
  try {
    return new RegExp(src, flags)
  } catch (e) {
    if (throwErrorAt !== undefined) {
      if (e instanceof SyntaxError) { parser.raise(throwErrorAt, "Error parsing regular expression: " + e.message); }
      throw e
    }
  }
}

var regexpUnicodeSupport = !!tryCreateRegexp("\uffff", "u");

pp$8.readRegexp = function() {
  var this$1 = this;

  var escaped, inClass, start = this.pos;
  for (;;) {
    if (this$1.pos >= this$1.input.length) { this$1.raise(start, "Unterminated regular expression"); }
    var ch = this$1.input.charAt(this$1.pos);
    if (lineBreak.test(ch)) { this$1.raise(start, "Unterminated regular expression"); }
    if (!escaped) {
      if (ch === "[") { inClass = true; }
      else if (ch === "]" && inClass) { inClass = false; }
      else if (ch === "/" && !inClass) { break }
      escaped = ch === "\\";
    } else { escaped = false; }
    ++this$1.pos;
  }
  var content = this.input.slice(start, this.pos);
  ++this.pos;
  // Need to use `readWord1` because '\uXXXX' sequences are allowed
  // here (don't ask).
  var mods = this.readWord1();
  var tmp = content, tmpFlags = "";
  if (mods) {
    var validFlags = /^[gim]*$/;
    if (this.options.ecmaVersion >= 6) { validFlags = /^[gimuy]*$/; }
    if (!validFlags.test(mods)) { this.raise(start, "Invalid regular expression flag"); }
    if (mods.indexOf("u") >= 0) {
      if (regexpUnicodeSupport) {
        tmpFlags = "u";
      } else {
        // Replace each astral symbol and every Unicode escape sequence that
        // possibly represents an astral symbol or a paired surrogate with a
        // single ASCII symbol to avoid throwing on regular expressions that
        // are only valid in combination with the `/u` flag.
        // Note: replacing with the ASCII symbol `x` might cause false
        // negatives in unlikely scenarios. For example, `[\u{61}-b]` is a
        // perfectly valid pattern that is equivalent to `[a-b]`, but it would
        // be replaced by `[x-b]` which throws an error.
        tmp = tmp.replace(/\\u\{([0-9a-fA-F]+)\}/g, function (_match, code, offset) {
          code = Number("0x" + code);
          if (code > 0x10FFFF) { this$1.raise(start + offset + 3, "Code point out of bounds"); }
          return "x"
        });
        tmp = tmp.replace(/\\u([a-fA-F0-9]{4})|[\uD800-\uDBFF][\uDC00-\uDFFF]/g, "x");
        tmpFlags = tmpFlags.replace("u", "");
      }
    }
  }
  // Detect invalid regular expressions.
  var value = null;
  // Rhino's regular expression parser is flaky and throws uncatchable exceptions,
  // so don't do detection if we are running under Rhino
  if (!isRhino) {
    tryCreateRegexp(tmp, tmpFlags, start, this);
    // Get a regular expression object for this pattern-flag pair, or `null` in
    // case the current environment doesn't support the flags it uses.
    value = tryCreateRegexp(content, mods);
  }
  return this.finishToken(types.regexp, {pattern: content, flags: mods, value: value})
};

// Read an integer in the given radix. Return null if zero digits
// were read, the integer value otherwise. When `len` is given, this
// will return `null` unless the integer has exactly `len` digits.

pp$8.readInt = function(radix, len) {
  var this$1 = this;

  var start = this.pos, total = 0;
  for (var i = 0, e = len == null ? Infinity : len; i < e; ++i) {
    var code = this$1.input.charCodeAt(this$1.pos), val = (void 0);
    if (code >= 97) { val = code - 97 + 10; } // a
    else if (code >= 65) { val = code - 65 + 10; } // A
    else if (code >= 48 && code <= 57) { val = code - 48; } // 0-9
    else { val = Infinity; }
    if (val >= radix) { break }
    ++this$1.pos;
    total = total * radix + val;
  }
  if (this.pos === start || len != null && this.pos - start !== len) { return null }

  return total
};

pp$8.readRadixNumber = function(radix) {
  this.pos += 2; // 0x
  var val = this.readInt(radix);
  if (val == null) { this.raise(this.start + 2, "Expected number in radix " + radix); }
  if (isIdentifierStart(this.fullCharCodeAtPos())) { this.raise(this.pos, "Identifier directly after number"); }
  return this.finishToken(types.num, val)
};

// Read an integer, octal integer, or floating-point number.

pp$8.readNumber = function(startsWithDot) {
  var start = this.pos, isFloat = false, octal = this.input.charCodeAt(this.pos) === 48;
  if (!startsWithDot && this.readInt(10) === null) { this.raise(start, "Invalid number"); }
  if (octal && this.pos == start + 1) { octal = false; }
  var next = this.input.charCodeAt(this.pos);
  if (next === 46 && !octal) { // '.'
    ++this.pos;
    this.readInt(10);
    isFloat = true;
    next = this.input.charCodeAt(this.pos);
  }
  if ((next === 69 || next === 101) && !octal) { // 'eE'
    next = this.input.charCodeAt(++this.pos);
    if (next === 43 || next === 45) { ++this.pos; } // '+-'
    if (this.readInt(10) === null) { this.raise(start, "Invalid number"); }
    isFloat = true;
  }
  if (isIdentifierStart(this.fullCharCodeAtPos())) { this.raise(this.pos, "Identifier directly after number"); }

  var str = this.input.slice(start, this.pos), val;
  if (isFloat) { val = parseFloat(str); }
  else if (!octal || str.length === 1) { val = parseInt(str, 10); }
  else if (this.strict) { this.raise(start, "Invalid number"); }
  else if (/[89]/.test(str)) { val = parseInt(str, 10); }
  else { val = parseInt(str, 8); }
  return this.finishToken(types.num, val)
};

// Read a string value, interpreting backslash-escapes.

pp$8.readCodePoint = function() {
  var ch = this.input.charCodeAt(this.pos), code;

  if (ch === 123) { // '{'
    if (this.options.ecmaVersion < 6) { this.unexpected(); }
    var codePos = ++this.pos;
    code = this.readHexChar(this.input.indexOf("}", this.pos) - this.pos);
    ++this.pos;
    if (code > 0x10FFFF) { this.invalidStringToken(codePos, "Code point out of bounds"); }
  } else {
    code = this.readHexChar(4);
  }
  return code
};

function codePointToString(code) {
  // UTF-16 Decoding
  if (code <= 0xFFFF) { return String.fromCharCode(code) }
  code -= 0x10000;
  return String.fromCharCode((code >> 10) + 0xD800, (code & 1023) + 0xDC00)
}

pp$8.readString = function(quote) {
  var this$1 = this;

  var out = "", chunkStart = ++this.pos;
  for (;;) {
    if (this$1.pos >= this$1.input.length) { this$1.raise(this$1.start, "Unterminated string constant"); }
    var ch = this$1.input.charCodeAt(this$1.pos);
    if (ch === quote) { break }
    if (ch === 92) { // '\'
      out += this$1.input.slice(chunkStart, this$1.pos);
      out += this$1.readEscapedChar(false);
      chunkStart = this$1.pos;
    } else {
      if (isNewLine(ch)) { this$1.raise(this$1.start, "Unterminated string constant"); }
      ++this$1.pos;
    }
  }
  out += this.input.slice(chunkStart, this.pos++);
  return this.finishToken(types.string, out)
};

// Reads template string tokens.

var INVALID_TEMPLATE_ESCAPE_ERROR = {};

pp$8.tryReadTemplateToken = function() {
  this.inTemplateElement = true;
  try {
    this.readTmplToken();
  } catch (err) {
    if (err === INVALID_TEMPLATE_ESCAPE_ERROR) {
      this.readInvalidTemplateToken();
    } else {
      throw err
    }
  }

  this.inTemplateElement = false;
};

pp$8.invalidStringToken = function(position, message) {
  if (this.inTemplateElement && this.options.ecmaVersion >= 9) {
    throw INVALID_TEMPLATE_ESCAPE_ERROR
  } else {
    this.raise(position, message);
  }
};

pp$8.readTmplToken = function() {
  var this$1 = this;

  var out = "", chunkStart = this.pos;
  for (;;) {
    if (this$1.pos >= this$1.input.length) { this$1.raise(this$1.start, "Unterminated template"); }
    var ch = this$1.input.charCodeAt(this$1.pos);
    if (ch === 96 || ch === 36 && this$1.input.charCodeAt(this$1.pos + 1) === 123) { // '`', '${'
      if (this$1.pos === this$1.start && (this$1.type === types.template || this$1.type === types.invalidTemplate)) {
        if (ch === 36) {
          this$1.pos += 2;
          return this$1.finishToken(types.dollarBraceL)
        } else {
          ++this$1.pos;
          return this$1.finishToken(types.backQuote)
        }
      }
      out += this$1.input.slice(chunkStart, this$1.pos);
      return this$1.finishToken(types.template, out)
    }
    if (ch === 92) { // '\'
      out += this$1.input.slice(chunkStart, this$1.pos);
      out += this$1.readEscapedChar(true);
      chunkStart = this$1.pos;
    } else if (isNewLine(ch)) {
      out += this$1.input.slice(chunkStart, this$1.pos);
      ++this$1.pos;
      switch (ch) {
      case 13:
        if (this$1.input.charCodeAt(this$1.pos) === 10) { ++this$1.pos; }
      case 10:
        out += "\n";
        break
      default:
        out += String.fromCharCode(ch);
        break
      }
      if (this$1.options.locations) {
        ++this$1.curLine;
        this$1.lineStart = this$1.pos;
      }
      chunkStart = this$1.pos;
    } else {
      ++this$1.pos;
    }
  }
};

// Reads a template token to search for the end, without validating any escape sequences
pp$8.readInvalidTemplateToken = function() {
  var this$1 = this;

  for (; this.pos < this.input.length; this.pos++) {
    switch (this$1.input[this$1.pos]) {
    case "\\":
      ++this$1.pos;
      break

    case "$":
      if (this$1.input[this$1.pos + 1] !== "{") {
        break
      }
    // falls through

    case "`":
      return this$1.finishToken(types.invalidTemplate, this$1.input.slice(this$1.start, this$1.pos))

    // no default
    }
  }
  this.raise(this.start, "Unterminated template");
};

// Used to read escaped characters

pp$8.readEscapedChar = function(inTemplate) {
  var ch = this.input.charCodeAt(++this.pos);
  ++this.pos;
  switch (ch) {
  case 110: return "\n" // 'n' -> '\n'
  case 114: return "\r" // 'r' -> '\r'
  case 120: return String.fromCharCode(this.readHexChar(2)) // 'x'
  case 117: return codePointToString(this.readCodePoint()) // 'u'
  case 116: return "\t" // 't' -> '\t'
  case 98: return "\b" // 'b' -> '\b'
  case 118: return "\u000b" // 'v' -> '\u000b'
  case 102: return "\f" // 'f' -> '\f'
  case 13: if (this.input.charCodeAt(this.pos) === 10) { ++this.pos; } // '\r\n'
  case 10: // ' \n'
    if (this.options.locations) { this.lineStart = this.pos; ++this.curLine; }
    return ""
  default:
    if (ch >= 48 && ch <= 55) {
      var octalStr = this.input.substr(this.pos - 1, 3).match(/^[0-7]+/)[0];
      var octal = parseInt(octalStr, 8);
      if (octal > 255) {
        octalStr = octalStr.slice(0, -1);
        octal = parseInt(octalStr, 8);
      }
      if (octalStr !== "0" && (this.strict || inTemplate)) {
        this.invalidStringToken(this.pos - 2, "Octal literal in strict mode");
      }
      this.pos += octalStr.length - 1;
      return String.fromCharCode(octal)
    }
    return String.fromCharCode(ch)
  }
};

// Used to read character escape sequences ('\x', '\u', '\U').

pp$8.readHexChar = function(len) {
  var codePos = this.pos;
  var n = this.readInt(16, len);
  if (n === null) { this.invalidStringToken(codePos, "Bad character escape sequence"); }
  return n
};

// Read an identifier, and return it as a string. Sets `this.containsEsc`
// to whether the word contained a '\u' escape.
//
// Incrementally adds only escaped chars, adding other chunks as-is
// as a micro-optimization.

pp$8.readWord1 = function() {
  var this$1 = this;

  this.containsEsc = false;
  var word = "", first = true, chunkStart = this.pos;
  var astral = this.options.ecmaVersion >= 6;
  while (this.pos < this.input.length) {
    var ch = this$1.fullCharCodeAtPos();
    if (isIdentifierChar(ch, astral)) {
      this$1.pos += ch <= 0xffff ? 1 : 2;
    } else if (ch === 92) { // "\"
      this$1.containsEsc = true;
      word += this$1.input.slice(chunkStart, this$1.pos);
      var escStart = this$1.pos;
      if (this$1.input.charCodeAt(++this$1.pos) != 117) // "u"
        { this$1.invalidStringToken(this$1.pos, "Expecting Unicode escape sequence \\uXXXX"); }
      ++this$1.pos;
      var esc = this$1.readCodePoint();
      if (!(first ? isIdentifierStart : isIdentifierChar)(esc, astral))
        { this$1.invalidStringToken(escStart, "Invalid Unicode escape"); }
      word += codePointToString(esc);
      chunkStart = this$1.pos;
    } else {
      break
    }
    first = false;
  }
  return word + this.input.slice(chunkStart, this.pos)
};

// Read an identifier or keyword token. Will check for reserved
// words when necessary.

pp$8.readWord = function() {
  var word = this.readWord1();
  var type = types.name;
  if (this.keywords.test(word)) {
    if (this.containsEsc) { this.raiseRecoverable(this.start, "Escape sequence in keyword " + word); }
    type = keywords$1$1[word];
  }
  return this.finishToken(type, word)
};

// Acorn is a tiny, fast JavaScript parser written in JavaScript.
//
// Acorn was written by Marijn Haverbeke, Ingvar Stepanyan, and
// various contributors and released under an MIT license.
//
// Git repositories for Acorn are available at
//
//     http://marijnhaverbeke.nl/git/acorn
//     https://github.com/ternjs/acorn.git
//
// Please use the [github bug tracker][ghbt] to report issues.
//
// [ghbt]: https://github.com/ternjs/acorn/issues
//
// This file defines the main parser interface. The library also comes
// with a [error-tolerant parser][dammit] and an
// [abstract syntax tree walker][walk], defined in other files.
//
// [dammit]: acorn_loose.js
// [walk]: util/walk.js

var version$1 = "5.2.1";

// The main exported interface (under `self.acorn` when in the
// browser) is a `parse` function that takes a code string and
// returns an abstract syntax tree as specified by [Mozilla parser
// API][api].
//
// [api]: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API

function parse$1(input, options) {
  return new Parser(options, input).parse()
}

// This function tries to parse a single expression at a given
// offset in a string. Useful for parsing mixed-language formats
// that embed JavaScript expressions.

function parseExpressionAt(input, pos, options) {
  var p = new Parser(options, input, pos);
  p.nextToken();
  return p.parseExpression()
}

// Acorn is organized as a tokenizer and a recursive-descent parser.
// The `tokenizer` export provides an interface to the tokenizer.

function tokenizer(input, options) {
  return new Parser(options, input)
}

// This is a terrible kludge to support the existing, pre-ES6
// interface where the loose parser module retroactively adds exports
// to this module.
var parse_dammit;
var LooseParser;
var pluginsLoose; // eslint-disable-line camelcase
function addLooseExports(parse, Parser$$1, plugins$$1) {
  parse_dammit = parse; // eslint-disable-line camelcase
  LooseParser = Parser$$1;
  pluginsLoose = plugins$$1;
}




var acorn = Object.freeze({
	version: version$1,
	parse: parse$1,
	parseExpressionAt: parseExpressionAt,
	tokenizer: tokenizer,
	get parse_dammit () { return parse_dammit; },
	get LooseParser () { return LooseParser; },
	get pluginsLoose () { return pluginsLoose; },
	addLooseExports: addLooseExports,
	Parser: Parser,
	plugins: plugins,
	defaultOptions: defaultOptions,
	Position: Position,
	SourceLocation: SourceLocation,
	getLineInfo: getLineInfo,
	Node: Node,
	TokenType: TokenType,
	tokTypes: types,
	keywordTypes: keywords$1$1,
	TokContext: TokContext,
	tokContexts: types$1,
	isIdentifierChar: isIdentifierChar,
	isIdentifierStart: isIdentifierStart,
	Token: Token,
	isNewLine: isNewLine,
	lineBreak: lineBreak,
	lineBreakG: lineBreakG,
	nonASCIIwhitespace: nonASCIIwhitespace
});

var xhtml = {
  quot: '\u0022',
  amp: '&',
  apos: '\u0027',
  lt: '<',
  gt: '>',
  nbsp: '\u00A0',
  iexcl: '\u00A1',
  cent: '\u00A2',
  pound: '\u00A3',
  curren: '\u00A4',
  yen: '\u00A5',
  brvbar: '\u00A6',
  sect: '\u00A7',
  uml: '\u00A8',
  copy: '\u00A9',
  ordf: '\u00AA',
  laquo: '\u00AB',
  not: '\u00AC',
  shy: '\u00AD',
  reg: '\u00AE',
  macr: '\u00AF',
  deg: '\u00B0',
  plusmn: '\u00B1',
  sup2: '\u00B2',
  sup3: '\u00B3',
  acute: '\u00B4',
  micro: '\u00B5',
  para: '\u00B6',
  middot: '\u00B7',
  cedil: '\u00B8',
  sup1: '\u00B9',
  ordm: '\u00BA',
  raquo: '\u00BB',
  frac14: '\u00BC',
  frac12: '\u00BD',
  frac34: '\u00BE',
  iquest: '\u00BF',
  Agrave: '\u00C0',
  Aacute: '\u00C1',
  Acirc: '\u00C2',
  Atilde: '\u00C3',
  Auml: '\u00C4',
  Aring: '\u00C5',
  AElig: '\u00C6',
  Ccedil: '\u00C7',
  Egrave: '\u00C8',
  Eacute: '\u00C9',
  Ecirc: '\u00CA',
  Euml: '\u00CB',
  Igrave: '\u00CC',
  Iacute: '\u00CD',
  Icirc: '\u00CE',
  Iuml: '\u00CF',
  ETH: '\u00D0',
  Ntilde: '\u00D1',
  Ograve: '\u00D2',
  Oacute: '\u00D3',
  Ocirc: '\u00D4',
  Otilde: '\u00D5',
  Ouml: '\u00D6',
  times: '\u00D7',
  Oslash: '\u00D8',
  Ugrave: '\u00D9',
  Uacute: '\u00DA',
  Ucirc: '\u00DB',
  Uuml: '\u00DC',
  Yacute: '\u00DD',
  THORN: '\u00DE',
  szlig: '\u00DF',
  agrave: '\u00E0',
  aacute: '\u00E1',
  acirc: '\u00E2',
  atilde: '\u00E3',
  auml: '\u00E4',
  aring: '\u00E5',
  aelig: '\u00E6',
  ccedil: '\u00E7',
  egrave: '\u00E8',
  eacute: '\u00E9',
  ecirc: '\u00EA',
  euml: '\u00EB',
  igrave: '\u00EC',
  iacute: '\u00ED',
  icirc: '\u00EE',
  iuml: '\u00EF',
  eth: '\u00F0',
  ntilde: '\u00F1',
  ograve: '\u00F2',
  oacute: '\u00F3',
  ocirc: '\u00F4',
  otilde: '\u00F5',
  ouml: '\u00F6',
  divide: '\u00F7',
  oslash: '\u00F8',
  ugrave: '\u00F9',
  uacute: '\u00FA',
  ucirc: '\u00FB',
  uuml: '\u00FC',
  yacute: '\u00FD',
  thorn: '\u00FE',
  yuml: '\u00FF',
  OElig: '\u0152',
  oelig: '\u0153',
  Scaron: '\u0160',
  scaron: '\u0161',
  Yuml: '\u0178',
  fnof: '\u0192',
  circ: '\u02C6',
  tilde: '\u02DC',
  Alpha: '\u0391',
  Beta: '\u0392',
  Gamma: '\u0393',
  Delta: '\u0394',
  Epsilon: '\u0395',
  Zeta: '\u0396',
  Eta: '\u0397',
  Theta: '\u0398',
  Iota: '\u0399',
  Kappa: '\u039A',
  Lambda: '\u039B',
  Mu: '\u039C',
  Nu: '\u039D',
  Xi: '\u039E',
  Omicron: '\u039F',
  Pi: '\u03A0',
  Rho: '\u03A1',
  Sigma: '\u03A3',
  Tau: '\u03A4',
  Upsilon: '\u03A5',
  Phi: '\u03A6',
  Chi: '\u03A7',
  Psi: '\u03A8',
  Omega: '\u03A9',
  alpha: '\u03B1',
  beta: '\u03B2',
  gamma: '\u03B3',
  delta: '\u03B4',
  epsilon: '\u03B5',
  zeta: '\u03B6',
  eta: '\u03B7',
  theta: '\u03B8',
  iota: '\u03B9',
  kappa: '\u03BA',
  lambda: '\u03BB',
  mu: '\u03BC',
  nu: '\u03BD',
  xi: '\u03BE',
  omicron: '\u03BF',
  pi: '\u03C0',
  rho: '\u03C1',
  sigmaf: '\u03C2',
  sigma: '\u03C3',
  tau: '\u03C4',
  upsilon: '\u03C5',
  phi: '\u03C6',
  chi: '\u03C7',
  psi: '\u03C8',
  omega: '\u03C9',
  thetasym: '\u03D1',
  upsih: '\u03D2',
  piv: '\u03D6',
  ensp: '\u2002',
  emsp: '\u2003',
  thinsp: '\u2009',
  zwnj: '\u200C',
  zwj: '\u200D',
  lrm: '\u200E',
  rlm: '\u200F',
  ndash: '\u2013',
  mdash: '\u2014',
  lsquo: '\u2018',
  rsquo: '\u2019',
  sbquo: '\u201A',
  ldquo: '\u201C',
  rdquo: '\u201D',
  bdquo: '\u201E',
  dagger: '\u2020',
  Dagger: '\u2021',
  bull: '\u2022',
  hellip: '\u2026',
  permil: '\u2030',
  prime: '\u2032',
  Prime: '\u2033',
  lsaquo: '\u2039',
  rsaquo: '\u203A',
  oline: '\u203E',
  frasl: '\u2044',
  euro: '\u20AC',
  image: '\u2111',
  weierp: '\u2118',
  real: '\u211C',
  trade: '\u2122',
  alefsym: '\u2135',
  larr: '\u2190',
  uarr: '\u2191',
  rarr: '\u2192',
  darr: '\u2193',
  harr: '\u2194',
  crarr: '\u21B5',
  lArr: '\u21D0',
  uArr: '\u21D1',
  rArr: '\u21D2',
  dArr: '\u21D3',
  hArr: '\u21D4',
  forall: '\u2200',
  part: '\u2202',
  exist: '\u2203',
  empty: '\u2205',
  nabla: '\u2207',
  isin: '\u2208',
  notin: '\u2209',
  ni: '\u220B',
  prod: '\u220F',
  sum: '\u2211',
  minus: '\u2212',
  lowast: '\u2217',
  radic: '\u221A',
  prop: '\u221D',
  infin: '\u221E',
  ang: '\u2220',
  and: '\u2227',
  or: '\u2228',
  cap: '\u2229',
  cup: '\u222A',
  'int': '\u222B',
  there4: '\u2234',
  sim: '\u223C',
  cong: '\u2245',
  asymp: '\u2248',
  ne: '\u2260',
  equiv: '\u2261',
  le: '\u2264',
  ge: '\u2265',
  sub: '\u2282',
  sup: '\u2283',
  nsub: '\u2284',
  sube: '\u2286',
  supe: '\u2287',
  oplus: '\u2295',
  otimes: '\u2297',
  perp: '\u22A5',
  sdot: '\u22C5',
  lceil: '\u2308',
  rceil: '\u2309',
  lfloor: '\u230A',
  rfloor: '\u230B',
  lang: '\u2329',
  rang: '\u232A',
  loz: '\u25CA',
  spades: '\u2660',
  clubs: '\u2663',
  hearts: '\u2665',
  diams: '\u2666'
};

var hexNumber = /^[\da-fA-F]+$/;
var decimalNumber = /^\d+$/;

var inject = function(acorn) {
  var tt = acorn.tokTypes;
  var tc = acorn.tokContexts;

  tc.j_oTag = new acorn.TokContext('<tag', false);
  tc.j_cTag = new acorn.TokContext('</tag', false);
  tc.j_expr = new acorn.TokContext('<tag>...</tag>', true, true);

  tt.jsxName = new acorn.TokenType('jsxName');
  tt.jsxText = new acorn.TokenType('jsxText', {beforeExpr: true});
  tt.jsxTagStart = new acorn.TokenType('jsxTagStart');
  tt.jsxTagEnd = new acorn.TokenType('jsxTagEnd');

  tt.jsxTagStart.updateContext = function() {
    this.context.push(tc.j_expr); // treat as beginning of JSX expression
    this.context.push(tc.j_oTag); // start opening tag context
    this.exprAllowed = false;
  };
  tt.jsxTagEnd.updateContext = function(prevType) {
    var out = this.context.pop();
    if (out === tc.j_oTag && prevType === tt.slash || out === tc.j_cTag) {
      this.context.pop();
      this.exprAllowed = this.curContext() === tc.j_expr;
    } else {
      this.exprAllowed = true;
    }
  };

  var pp = acorn.Parser.prototype;

  // Reads inline JSX contents token.

  pp.jsx_readToken = function() {
    var out = '', chunkStart = this.pos;
    for (;;) {
      if (this.pos >= this.input.length)
        { this.raise(this.start, 'Unterminated JSX contents'); }
      var ch = this.input.charCodeAt(this.pos);

      switch (ch) {
      case 60: // '<'
      case 123: // '{'
        if (this.pos === this.start) {
          if (ch === 60 && this.exprAllowed) {
            ++this.pos;
            return this.finishToken(tt.jsxTagStart);
          }
          return this.getTokenFromCode(ch);
        }
        out += this.input.slice(chunkStart, this.pos);
        return this.finishToken(tt.jsxText, out);

      case 38: // '&'
        out += this.input.slice(chunkStart, this.pos);
        out += this.jsx_readEntity();
        chunkStart = this.pos;
        break;

      default:
        if (acorn.isNewLine(ch)) {
          out += this.input.slice(chunkStart, this.pos);
          out += this.jsx_readNewLine(true);
          chunkStart = this.pos;
        } else {
          ++this.pos;
        }
      }
    }
  };

  pp.jsx_readNewLine = function(normalizeCRLF) {
    var ch = this.input.charCodeAt(this.pos);
    var out;
    ++this.pos;
    if (ch === 13 && this.input.charCodeAt(this.pos) === 10) {
      ++this.pos;
      out = normalizeCRLF ? '\n' : '\r\n';
    } else {
      out = String.fromCharCode(ch);
    }
    if (this.options.locations) {
      ++this.curLine;
      this.lineStart = this.pos;
    }

    return out;
  };

  pp.jsx_readString = function(quote) {
    var out = '', chunkStart = ++this.pos;
    for (;;) {
      if (this.pos >= this.input.length)
        { this.raise(this.start, 'Unterminated string constant'); }
      var ch = this.input.charCodeAt(this.pos);
      if (ch === quote) { break; }
      if (ch === 38) { // '&'
        out += this.input.slice(chunkStart, this.pos);
        out += this.jsx_readEntity();
        chunkStart = this.pos;
      } else if (acorn.isNewLine(ch)) {
        out += this.input.slice(chunkStart, this.pos);
        out += this.jsx_readNewLine(false);
        chunkStart = this.pos;
      } else {
        ++this.pos;
      }
    }
    out += this.input.slice(chunkStart, this.pos++);
    return this.finishToken(tt.string, out);
  };

  pp.jsx_readEntity = function() {
    var str = '', count = 0, entity;
    var ch = this.input[this.pos];
    if (ch !== '&')
      { this.raise(this.pos, 'Entity must start with an ampersand'); }
    var startPos = ++this.pos;
    while (this.pos < this.input.length && count++ < 10) {
      ch = this.input[this.pos++];
      if (ch === ';') {
        if (str[0] === '#') {
          if (str[1] === 'x') {
            str = str.substr(2);
            if (hexNumber.test(str))
              { entity = String.fromCharCode(parseInt(str, 16)); }
          } else {
            str = str.substr(1);
            if (decimalNumber.test(str))
              { entity = String.fromCharCode(parseInt(str, 10)); }
          }
        } else {
          entity = xhtml[str];
        }
        break;
      }
      str += ch;
    }
    if (!entity) {
      this.pos = startPos;
      return '&';
    }
    return entity;
  };


  // Read a JSX identifier (valid tag or attribute name).
  //
  // Optimized version since JSX identifiers can't contain
  // escape characters and so can be read as single slice.
  // Also assumes that first character was already checked
  // by isIdentifierStart in readToken.

  pp.jsx_readWord = function() {
    var ch, start = this.pos;
    do {
      ch = this.input.charCodeAt(++this.pos);
    } while (acorn.isIdentifierChar(ch) || ch === 45); // '-'
    return this.finishToken(tt.jsxName, this.input.slice(start, this.pos));
  };

  // Transforms JSX element name to string.

  function getQualifiedJSXName(object) {
    if (object.type === 'JSXIdentifier')
      { return object.name; }

    if (object.type === 'JSXNamespacedName')
      { return object.namespace.name + ':' + object.name.name; }

    if (object.type === 'JSXMemberExpression')
      { return getQualifiedJSXName(object.object) + '.' +
      getQualifiedJSXName(object.property); }
  }

  // Parse next token as JSX identifier

  pp.jsx_parseIdentifier = function() {
    var node = this.startNode();
    if (this.type === tt.jsxName)
      { node.name = this.value; }
    else if (this.type.keyword)
      { node.name = this.type.keyword; }
    else
      { this.unexpected(); }
    this.next();
    return this.finishNode(node, 'JSXIdentifier');
  };

  // Parse namespaced identifier.

  pp.jsx_parseNamespacedName = function() {
    var startPos = this.start, startLoc = this.startLoc;
    var name = this.jsx_parseIdentifier();
    if (!this.options.plugins.jsx.allowNamespaces || !this.eat(tt.colon)) { return name; }
    var node = this.startNodeAt(startPos, startLoc);
    node.namespace = name;
    node.name = this.jsx_parseIdentifier();
    return this.finishNode(node, 'JSXNamespacedName');
  };

  // Parses element name in any form - namespaced, member
  // or single identifier.

  pp.jsx_parseElementName = function() {
    var startPos = this.start, startLoc = this.startLoc;
    var node = this.jsx_parseNamespacedName();
    if (this.type === tt.dot && node.type === 'JSXNamespacedName' && !this.options.plugins.jsx.allowNamespacedObjects) {
      this.unexpected();
    }
    while (this.eat(tt.dot)) {
      var newNode = this.startNodeAt(startPos, startLoc);
      newNode.object = node;
      newNode.property = this.jsx_parseIdentifier();
      node = this.finishNode(newNode, 'JSXMemberExpression');
    }
    return node;
  };

  // Parses any type of JSX attribute value.

  pp.jsx_parseAttributeValue = function() {
    switch (this.type) {
    case tt.braceL:
      var node = this.jsx_parseExpressionContainer();
      if (node.expression.type === 'JSXEmptyExpression')
        { this.raise(node.start, 'JSX attributes must only be assigned a non-empty expression'); }
      return node;

    case tt.jsxTagStart:
    case tt.string:
      return this.parseExprAtom();

    default:
      this.raise(this.start, 'JSX value should be either an expression or a quoted JSX text');
    }
  };

  // JSXEmptyExpression is unique type since it doesn't actually parse anything,
  // and so it should start at the end of last read token (left brace) and finish
  // at the beginning of the next one (right brace).

  pp.jsx_parseEmptyExpression = function() {
    var node = this.startNodeAt(this.lastTokEnd, this.lastTokEndLoc);
    return this.finishNodeAt(node, 'JSXEmptyExpression', this.start, this.startLoc);
  };

  // Parses JSX expression enclosed into curly brackets.


  pp.jsx_parseExpressionContainer = function() {
    var node = this.startNode();
    this.next();
    node.expression = this.type === tt.braceR
      ? this.jsx_parseEmptyExpression()
      : this.parseExpression();
    this.expect(tt.braceR);
    return this.finishNode(node, 'JSXExpressionContainer');
  };

  // Parses following JSX attribute name-value pair.

  pp.jsx_parseAttribute = function() {
    var node = this.startNode();
    if (this.eat(tt.braceL)) {
      this.expect(tt.ellipsis);
      node.argument = this.parseMaybeAssign();
      this.expect(tt.braceR);
      return this.finishNode(node, 'JSXSpreadAttribute');
    }
    node.name = this.jsx_parseNamespacedName();
    node.value = this.eat(tt.eq) ? this.jsx_parseAttributeValue() : null;
    return this.finishNode(node, 'JSXAttribute');
  };

  // Parses JSX opening tag starting after '<'.

  pp.jsx_parseOpeningElementAt = function(startPos, startLoc) {
    var node = this.startNodeAt(startPos, startLoc);
    node.attributes = [];
    node.name = this.jsx_parseElementName();
    while (this.type !== tt.slash && this.type !== tt.jsxTagEnd)
      { node.attributes.push(this.jsx_parseAttribute()); }
    node.selfClosing = this.eat(tt.slash);
    this.expect(tt.jsxTagEnd);
    return this.finishNode(node, 'JSXOpeningElement');
  };

  // Parses JSX closing tag starting after '</'.

  pp.jsx_parseClosingElementAt = function(startPos, startLoc) {
    var node = this.startNodeAt(startPos, startLoc);
    node.name = this.jsx_parseElementName();
    this.expect(tt.jsxTagEnd);
    return this.finishNode(node, 'JSXClosingElement');
  };

  // Parses entire JSX element, including it's opening tag
  // (starting after '<'), attributes, contents and closing tag.

  pp.jsx_parseElementAt = function(startPos, startLoc) {
    var node = this.startNodeAt(startPos, startLoc);
    var children = [];
    var openingElement = this.jsx_parseOpeningElementAt(startPos, startLoc);
    var closingElement = null;

    if (!openingElement.selfClosing) {
      contents: for (;;) {
        switch (this.type) {
        case tt.jsxTagStart:
          startPos = this.start; startLoc = this.startLoc;
          this.next();
          if (this.eat(tt.slash)) {
            closingElement = this.jsx_parseClosingElementAt(startPos, startLoc);
            break contents;
          }
          children.push(this.jsx_parseElementAt(startPos, startLoc));
          break;

        case tt.jsxText:
          children.push(this.parseExprAtom());
          break;

        case tt.braceL:
          children.push(this.jsx_parseExpressionContainer());
          break;

        default:
          this.unexpected();
        }
      }
      if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name)) {
        this.raise(
          closingElement.start,
          'Expected corresponding JSX closing tag for <' + getQualifiedJSXName(openingElement.name) + '>');
      }
    }

    node.openingElement = openingElement;
    node.closingElement = closingElement;
    node.children = children;
    if (this.type === tt.relational && this.value === "<") {
      this.raise(this.start, "Adjacent JSX elements must be wrapped in an enclosing tag");
    }
    return this.finishNode(node, 'JSXElement');
  };

  // Parses entire JSX element from current position.

  pp.jsx_parseElement = function() {
    var startPos = this.start, startLoc = this.startLoc;
    this.next();
    return this.jsx_parseElementAt(startPos, startLoc);
  };

  acorn.plugins.jsx = function(instance, opts) {
    if (!opts) {
      return;
    }

    if (typeof opts !== 'object') {
      opts = {};
    }

    instance.options.plugins.jsx = {
      allowNamespaces: opts.allowNamespaces !== false,
      allowNamespacedObjects: !!opts.allowNamespacedObjects
    };

    instance.extend('parseExprAtom', function(inner) {
      return function(refShortHandDefaultPos) {
        if (this.type === tt.jsxText)
          { return this.parseLiteral(this.value); }
        else if (this.type === tt.jsxTagStart)
          { return this.jsx_parseElement(); }
        else
          { return inner.call(this, refShortHandDefaultPos); }
      };
    });

    instance.extend('readToken', function(inner) {
      return function(code) {
        var context = this.curContext();

        if (context === tc.j_expr) { return this.jsx_readToken(); }

        if (context === tc.j_oTag || context === tc.j_cTag) {
          if (acorn.isIdentifierStart(code)) { return this.jsx_readWord(); }

          if (code == 62) {
            ++this.pos;
            return this.finishToken(tt.jsxTagEnd);
          }

          if ((code === 34 || code === 39) && context == tc.j_oTag)
            { return this.jsx_readString(code); }
        }

        if (code === 60 && this.exprAllowed) {
          ++this.pos;
          return this.finishToken(tt.jsxTagStart);
        }
        return inner.call(this, code);
      };
    });

    instance.extend('updateContext', function(inner) {
      return function(prevType) {
        if (this.type == tt.braceL) {
          var curContext = this.curContext();
          if (curContext == tc.j_oTag) { this.context.push(tc.b_expr); }
          else if (curContext == tc.j_expr) { this.context.push(tc.b_tmpl); }
          else { inner.call(this, prevType); }
          this.exprAllowed = true;
        } else if (this.type === tt.slash && prevType === tt.jsxTagStart) {
          this.context.length -= 2; // do not consider JSX expr -> JSX open tag -> ... anymore
          this.context.push(tc.j_cTag); // reconsider as closing tag context
          this.exprAllowed = false;
        } else {
          return inner.call(this, prevType);
        }
      };
    });
  };

  return acorn;
};

var inject$1 = function(acorn) {
  if (acorn.version.substr(0, 1) !== "5") {
    throw new Error("Unsupported acorn version " + acorn.version + ", please use acorn 5");
  }
  var tt = acorn.tokTypes;
  var pp = acorn.Parser.prototype;

  // this is the same parseObj that acorn has with...
  function parseObj(isPattern, refDestructuringErrors) {
    let node = this.startNode(), first = true, propHash = {};
    node.properties = [];
    this.next();
    while (!this.eat(tt.braceR)) {
      if (!first) {
        this.expect(tt.comma);
        if (this.afterTrailingComma(tt.braceR)) { break }
      } else { first = false; }

      let prop = this.startNode(), isGenerator, isAsync, startPos, startLoc;
      if (this.options.ecmaVersion >= 6) {
        // ...the spread logic borrowed from babylon :)
        if (this.type === tt.ellipsis) {
          if (isPattern) {
            this.next();
            prop.argument = this.parseIdent();
            this.finishNode(prop, "RestElement");
          } else {
            prop = this.parseSpread(refDestructuringErrors);
          }
          node.properties.push(prop);
          if (this.type === tt.comma) {
            if (isPattern) {
              this.raise(this.start, "Comma is not permitted after the rest element");
            } else if (refDestructuringErrors && refDestructuringErrors.trailingComma < 0) {
              refDestructuringErrors.trailingComma = this.start;
            }
          }
          continue
        }

        prop.method = false;
        prop.shorthand = false;
        if (isPattern || refDestructuringErrors) {
          startPos = this.start;
          startLoc = this.startLoc;
        }
        if (!isPattern)
          { isGenerator = this.eat(tt.star); }
      }
      this.parsePropertyName(prop);
      if (!isPattern && this.options.ecmaVersion >= 8 && !isGenerator && this.isAsyncProp(prop)) {
        isAsync = true;
        this.parsePropertyName(prop, refDestructuringErrors);
      } else {
        isAsync = false;
      }
      this.parsePropertyValue(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors);
      if (!isPattern) { this.checkPropClash(prop, propHash); }
      node.properties.push(this.finishNode(prop, "Property"));
    }
    return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression")
  }

  const getCheckLVal = origCheckLVal => function (expr, bindingType, checkClashes) {
    if (expr.type == "ObjectPattern") {
      for (let prop of expr.properties)
        this.checkLVal(prop, bindingType, checkClashes);
      return
    } else if (expr.type === "Property") {
      // AssignmentProperty has type == "Property"
      return this.checkLVal(expr.value, bindingType, checkClashes)
    }
    return origCheckLVal.apply(this, arguments)
  };

  acorn.plugins.objectSpread = function objectSpreadPlugin(instance) {
    pp.parseObj = parseObj;
    instance.extend("checkLVal", getCheckLVal);
    instance.extend("toAssignable", nextMethod => function(node, isBinding) {
      if (this.options.ecmaVersion >= 6 && node) {
        if (node.type == "ObjectExpression") {
          node.type = "ObjectPattern";
          for (let prop of node.properties)
            this.toAssignable(prop, isBinding);
          return node
        } else if (node.type === "Property") {
          // AssignmentProperty has type == "Property"
          if (node.kind !== "init") { this.raise(node.key.start, "Object pattern can't contain getter or setter"); }
          return this.toAssignable(node.value, isBinding)
        } else if (node.type === "SpreadElement") {
          node.type = "RestElement";
          return this.toAssignable(node.argument, isBinding)
        }
      }
      return nextMethod.apply(this, arguments)
    });
    instance.extend("checkPatternExport", nextMethod => function(exports, pat) {
      if (pat.type == "ObjectPattern") {
        for (let prop of pat.properties)
          this.checkPatternExport(exports, prop);
        return
      } else if (pat.type === "Property") {
        return this.checkPatternExport(exports, pat.value)
      } else if (pat.type === "RestElement") {
        return this.checkPatternExport(exports, pat.argument)
      }
      nextMethod.apply(this, arguments);
    });
  };

  return acorn;
};

var keys = {
	Program: ['body'],
	Literal: []
};

// used for debugging, without the noise created by
// circular references
function toJSON(node) {
	var obj = {};

	Object.keys(node).forEach(key => {
		if (
			key === 'parent' ||
			key === 'program' ||
			key === 'keys' ||
			key === '__wrapped'
		)
			{ return; }

		if (Array.isArray(node[key])) {
			obj[key] = node[key].map(toJSON);
		} else if (node[key] && node[key].toJSON) {
			obj[key] = node[key].toJSON();
		} else {
			obj[key] = node[key];
		}
	});

	return obj;
}

class Node$1 {
	constructor(raw, parent) {
		raw.parent = parent;
		raw.program = parent.program || parent;
		raw.depth = parent.depth + 1;
		raw.keys = keys[raw.type];
		raw.indentation = undefined;

		for (var i = 0, list = keys[raw.type]; i < list.length; i += 1) {
			const key = list[i];

			wrap(raw[key], raw);
		}

		raw.program.magicString.addSourcemapLocation(raw.start);
		raw.program.magicString.addSourcemapLocation(raw.end);
	}

	ancestor(level) {
		let node = this;
		while (level--) {
			node = node.parent;
			if (!node) { return null; }
		}

		return node;
	}

	contains(node) {
		while (node) {
			if (node === this) { return true; }
			node = node.parent;
		}

		return false;
	}

	findLexicalBoundary() {
		return this.parent.findLexicalBoundary();
	}

	findNearest(type) {
		if (typeof type === 'string') { type = new RegExp(`^${type}$`); }
		if (type.test(this.type)) { return this; }
		return this.parent.findNearest(type);
	}

	unparenthesizedParent() {
		let node = this.parent;
		while (node && node.type === 'ParenthesizedExpression') {
			node = node.parent;
		}
		return node;
	}

	unparenthesize() {
		let node = this;
		while (node.type === 'ParenthesizedExpression') {
			node = node.expression;
		}
		return node;
	}

	findScope(functionScope) {
		return this.parent.findScope(functionScope);
	}

	getIndentation() {
		return this.parent.getIndentation();
	}

	initialise(transforms) {
		for (var i = 0, list = this.keys; i < list.length; i += 1) {
			var key = list[i];

			const value = this[key];

			if (Array.isArray(value)) {
				value.forEach(node => node && node.initialise(transforms));
			} else if (value && typeof value === 'object') {
				value.initialise(transforms);
			}
		}
	}

	toJSON() {
		return toJSON(this);
	}

	toString() {
		return this.program.magicString.original.slice(this.start, this.end);
	}

	transpile(code, transforms) {
		for (var i = 0, list = this.keys; i < list.length; i += 1) {
			const key = list[i];

			const value = this[key];

			if (Array.isArray(value)) {
				value.forEach(node => node && node.transpile(code, transforms));
			} else if (value && typeof value === 'object') {
				value.transpile(code, transforms);
			}
		}
	}
}

function isArguments(node) {
	return node.type === 'Identifier' && node.name === 'arguments';
}

function spread(
	code,
	elements,
	start,
	argumentsArrayAlias,
	isNew
) {
	let i = elements.length;
	let firstSpreadIndex = -1;

	while (i--) {
		const element = elements[i];
		if (element && element.type === 'SpreadElement') {
			if (isArguments(element.argument)) {
				code.overwrite(
					element.argument.start,
					element.argument.end,
					argumentsArrayAlias
				);
			}

			firstSpreadIndex = i;
		}
	}

	if (firstSpreadIndex === -1) { return false; } // false indicates no spread elements

	if (isNew) {
		for (i = 0; i < elements.length; i += 1) {
			let element = elements[i];
			if (element.type === 'SpreadElement') {
				code.remove(element.start, element.argument.start);
			} else {
				code.prependRight(element.start, '[');
				code.prependRight(element.end, ']');
			}
		}

		return true; // true indicates some spread elements
	}

	let element = elements[firstSpreadIndex];
	const previousElement = elements[firstSpreadIndex - 1];

	if (!previousElement) {
		code.remove(start, element.start);
		code.overwrite(element.end, elements[1].start, '.concat( ');
	} else {
		code.overwrite(previousElement.end, element.start, ' ].concat( ');
	}

	for (i = firstSpreadIndex; i < elements.length; i += 1) {
		element = elements[i];

		if (element) {
			if (element.type === 'SpreadElement') {
				code.remove(element.start, element.argument.start);
			} else {
				code.appendLeft(element.start, '[');
				code.appendLeft(element.end, ']');
			}
		}
	}

	return true; // true indicates some spread elements
}

class ArrayExpression extends Node$1 {
	initialise(transforms) {
		if (transforms.spreadRest && this.elements.length) {
			const lexicalBoundary = this.findLexicalBoundary();

			let i = this.elements.length;
			while (i--) {
				const element = this.elements[i];
				if (
					element &&
					element.type === 'SpreadElement' &&
					isArguments(element.argument)
				) {
					this.argumentsArrayAlias = lexicalBoundary.getArgumentsArrayAlias();
				}
			}
		}

		super.initialise(transforms);
	}

	transpile(code, transforms) {
		if (transforms.spreadRest) {
			// erase trailing comma after last array element if not an array hole
			if (this.elements.length) {
				let lastElement = this.elements[this.elements.length - 1];
				if (
					lastElement &&
					/\s*,/.test(code.original.slice(lastElement.end, this.end))
				) {
					code.overwrite(lastElement.end, this.end - 1, ' ');
				}
			}

			if (this.elements.length === 1) {
				const element = this.elements[0];

				if (element && element.type === 'SpreadElement') {
					// special case – [ ...arguments ]
					if (isArguments(element.argument)) {
						code.overwrite(
							this.start,
							this.end,
							`[].concat( ${this.argumentsArrayAlias} )`
						); // TODO if this is the only use of argsArray, don't bother concating
					} else {
						code.overwrite(this.start, element.argument.start, '[].concat( ');
						code.overwrite(element.end, this.end, ' )');
					}
				}
			} else {
				const hasSpreadElements = spread(
					code,
					this.elements,
					this.start,
					this.argumentsArrayAlias
				);

				if (hasSpreadElements) {
					code.overwrite(this.end - 1, this.end, ')');
				}
			}
		}

		super.transpile(code, transforms);
	}
}

function removeTrailingComma(code, c) {
	while (code.original[c] !== ')') {
		if (code.original[c] === ',') {
			code.remove(c, c + 1);
			return;
		}

		c += 1;
	}
}

class ArrowFunctionExpression extends Node$1 {
	initialise(transforms) {
		this.body.createScope();
		super.initialise(transforms);
	}

	transpile(code, transforms) {
		const naked = this.params.length === 1 && this.start === this.params[0].start;

		if (transforms.arrow || this.needsArguments(transforms)) {
			// remove arrow
			let charIndex = this.body.start;
			while (code.original[charIndex] !== '=') {
				charIndex -= 1;
			}
			code.remove(charIndex, this.body.start);

			super.transpile(code, transforms);

			// wrap naked parameter
			if (naked) {
				code.prependRight(this.params[0].start, '(');
				code.appendLeft(this.params[0].end, ')');
			}

			// add function
			if (this.parent && this.parent.type === 'ExpressionStatement') {
				// standalone expression statement
				code.prependRight(this.start, '!function');
			} else {
				code.prependRight(this.start, 'function ');
			}
		} else {
			super.transpile(code, transforms);
		}

		if (transforms.trailingFunctionCommas && this.params.length && !naked) {
			removeTrailingComma(code, this.params[this.params.length - 1].end);
		}
	}

	// Returns whether any transforms that will happen use `arguments`
	needsArguments(transforms) {
		return (
			transforms.spreadRest &&
			this.params.filter(param => param.type === 'RestElement').length > 0
		);
	}
}

function locate(source, index) {
	var lines = source.split('\n');
	var len = lines.length;

	var lineStart = 0;
	var i;

	for (i = 0; i < len; i += 1) {
		var line = lines[i];
		var lineEnd = lineStart + line.length + 1; // +1 for newline

		if (lineEnd > index) {
			return { line: i + 1, column: index - lineStart, char: i };
		}

		lineStart = lineEnd;
	}

	throw new Error('Could not determine location of character');
}

function pad(num, len) {
	let result = String(num);
	return result + repeat(' ', len - result.length);
}

function repeat(str, times) {
	let result = '';
	while (times--) { result += str; }
	return result;
}

function getSnippet(source, loc, length) {
	if ( length === void 0 ) { length = 1; }

	const first = Math.max(loc.line - 5, 0);
	const last = loc.line;

	const numDigits = String(last).length;

	const lines = source.split('\n').slice(first, last);

	const lastLine = lines[lines.length - 1];
	const offset = lastLine.slice(0, loc.column).replace(/\t/g, '  ').length;

	let snippet = lines
		.map((line, i) => `${pad(i + first + 1, numDigits)} : ${line.replace(/\t/g, '  ')}`)
		.join('\n');

	snippet += '\n' + repeat(' ', numDigits + 3 + offset) + repeat('^', length);

	return snippet;
}

class CompileError extends Error {
	constructor(message, node) {
		super(message);

		this.name = 'CompileError';
		if (!node) {
			return;
		}

		const source = node.program.magicString.original;
		const loc = locate(source, node.start);

		this.message = message + ` (${loc.line}:${loc.column})`;

		this.stack = new Error().stack.replace(
			new RegExp(`.+new ${this.name}.+\\n`, 'm'),
			''
		);

		this.loc = loc;
		this.snippet = getSnippet(source, loc, node.end - node.start);
	}

	toString() {
		return `${this.name}: ${this.message}\n${this.snippet}`;
	}
}

class AssignmentExpression extends Node$1 {
	initialise(transforms) {
		if (this.left.type === 'Identifier') {
			const declaration = this.findScope(false).findDeclaration(this.left.name);
			if (declaration && declaration.kind === 'const') {
				throw new CompileError(`${this.left.name} is read-only`, this.left);
			}

			// special case – https://gitlab.com/Rich-Harris/buble/issues/11
			const statement = declaration && declaration.node.ancestor(3);
			if (
				statement &&
				statement.type === 'ForStatement' &&
				statement.body.contains(this)
			) {
				statement.reassigned[this.left.name] = true;
			}
		}

		super.initialise(transforms);
	}

	transpile(code, transforms) {
		if (this.operator === '**=' && transforms.exponentiation) {
			this.transpileExponentiation(code, transforms);
		} else if (/Pattern/.test(this.left.type) && transforms.destructuring) {
			this.transpileDestructuring(code, transforms);
		}

		super.transpile(code, transforms);
	}

	transpileDestructuring(code) {
		const scope = this.findScope(true);
		const assign = scope.createIdentifier('assign');
		const temporaries = [assign];

		const start = this.start;

		// We need to pick out some elements from the original code,
		// interleaved with generated code. These helpers are used to
		// easily do that while keeping the order of the output
		// predictable.
		let text = '';
		function use(node) {
			code.prependRight(node.start, text);
			code.move(node.start, node.end, start);
			text = '';
		}
		function write(string) {
			text += string;
		}

		write(`(${assign} = `);
		use(this.right);

		// Walk `pattern`, generating code that assigns the value in
		// `ref` to it. When `mayDuplicate` is false, the function
		// must take care to only output `ref` once.
		function destructure(pattern, ref, mayDuplicate) {
			if (
				pattern.type === 'Identifier' ||
				pattern.type === 'MemberExpression'
			) {
				write(', ');
				use(pattern);
				write(` = ${ref}`);
			} else if (pattern.type === 'AssignmentPattern') {
				if (pattern.left.type === 'Identifier') {
					code.remove(pattern.start, pattern.right.start);

					const target = pattern.left.name;
					let source = ref;
					if (!mayDuplicate) {
						write(`, ${target} = ${ref}`);
						source = target;
					}
					write(`, ${target} = ${source} === void 0 ? `);
					use(pattern.right);
					write(` : ${source}`);
				} else {
					code.remove(pattern.left.end, pattern.right.start);

					const target = scope.createIdentifier('temp');
					let source = ref;
					temporaries.push(target);
					if (!mayDuplicate) {
						write(`, ${target} = ${ref}`);
						source = target;
					}
					write(`, ${target} = ${source} === void 0 ? `);
					use(pattern.right);
					write(` : ${source}`);
					destructure(pattern.left, target, true);
				}
			} else if (pattern.type === 'ArrayPattern') {
				const elements = pattern.elements;
				if (elements.length === 1) {
					code.remove(pattern.start, elements[0].start);
					destructure(elements[0], `${ref}[0]`, false);
					code.remove(elements[0].end, pattern.end);
				} else {
					if (!mayDuplicate) {
						const temp = scope.createIdentifier('array');
						temporaries.push(temp);
						write(`, ${temp} = ${ref}`);
						ref = temp;
					}

					let c = pattern.start;
					elements.forEach((element, i) => {
						if (!element) { return; }

						code.remove(c, element.start);
						c = element.end;

						if (element.type === 'RestElement') {
							code.remove(element.start, element.argument.start);
							destructure(element.argument, `${ref}.slice(${i})`, false);
						} else {
							destructure(element, `${ref}[${i}]`, false);
						}
					});

					code.remove(c, pattern.end);
				}
			} else if (pattern.type === 'ObjectPattern') {
				const props = pattern.properties;
				if (props.length == 1) {
					const prop = props[0];
					const value =
						prop.computed || prop.key.type !== 'Identifier'
							? `${ref}[${code.slice(prop.key.start, prop.key.end)}]`
							: `${ref}.${prop.key.name}`;

					code.remove(pattern.start, prop.value.start);
					destructure(prop.value, value, false);
					code.remove(prop.end, pattern.end);
				} else {
					if (!mayDuplicate) {
						const temp = scope.createIdentifier('obj');
						temporaries.push(temp);
						write(`, ${temp} = ${ref}`);
						ref = temp;
					}

					let c = pattern.start;

					props.forEach(prop => {
						const value =
							prop.computed || prop.key.type !== 'Identifier'
								? `${ref}[${code.slice(prop.key.start, prop.key.end)}]`
								: `${ref}.${prop.key.name}`;

						code.remove(c, prop.value.start);
						c = prop.end;

						destructure(prop.value, value, false);
					});

					code.remove(c, pattern.end);
				}
			} else {
				throw new Error(
					`Unexpected node type in destructuring assignment (${pattern.type})`
				);
			}
		}

		destructure(this.left, assign, true);
		code.remove(this.left.end, this.right.start);

		if (this.unparenthesizedParent().type === 'ExpressionStatement') {
			// no rvalue needed for expression statement
			code.prependRight(start, `${text})`);
		} else {
			// destructuring is part of an expression - need an rvalue
			code.prependRight(start, `${text}, ${assign})`);
		}

		const statement = this.findNearest(/(?:Statement|Declaration)$/);
		code.appendLeft(
			statement.start,
			`var ${temporaries.join(', ')};\n${statement.getIndentation()}`
		);
	}

	transpileExponentiation(code) {
		const scope = this.findScope(false);
		const getAlias = name => {
			const declaration = scope.findDeclaration(name);
			return declaration ? declaration.name : name;
		};

		// first, the easy part – `**=` -> `=`
		let charIndex = this.left.end;
		while (code.original[charIndex] !== '*') { charIndex += 1; }
		code.remove(charIndex, charIndex + 2);

		// how we do the next part depends on a number of factors – whether
		// this is a top-level statement, and whether we're updating a
		// simple or complex reference
		let base;

		const left = this.left.unparenthesize();

		if (left.type === 'Identifier') {
			base = getAlias(left.name);
		} else if (left.type === 'MemberExpression') {
			let object;
			let needsObjectVar = false;
			let property;
			let needsPropertyVar = false;

			const statement = this.findNearest(/(?:Statement|Declaration)$/);
			const i0 = statement.getIndentation();

			if (left.property.type === 'Identifier') {
				property = left.computed
					? getAlias(left.property.name)
					: left.property.name;
			} else {
				property = scope.createIdentifier('property');
				needsPropertyVar = true;
			}

			if (left.object.type === 'Identifier') {
				object = getAlias(left.object.name);
			} else {
				object = scope.createIdentifier('object');
				needsObjectVar = true;
			}

			if (left.start === statement.start) {
				if (needsObjectVar && needsPropertyVar) {
					code.prependRight(statement.start, `var ${object} = `);
					code.overwrite(
						left.object.end,
						left.property.start,
						`;\n${i0}var ${property} = `
					);
					code.overwrite(
						left.property.end,
						left.end,
						`;\n${i0}${object}[${property}]`
					);
				} else if (needsObjectVar) {
					code.prependRight(statement.start, `var ${object} = `);
					code.appendLeft(left.object.end, `;\n${i0}`);
					code.appendLeft(left.object.end, object);
				} else if (needsPropertyVar) {
					code.prependRight(left.property.start, `var ${property} = `);
					code.appendLeft(left.property.end, `;\n${i0}`);
					code.move(left.property.start, left.property.end, this.start);

					code.appendLeft(left.object.end, `[${property}]`);
					code.remove(left.object.end, left.property.start);
					code.remove(left.property.end, left.end);
				}
			} else {
				let declarators = [];
				if (needsObjectVar) { declarators.push(object); }
				if (needsPropertyVar) { declarators.push(property); }

				if (declarators.length) {
					code.prependRight(
						statement.start,
						`var ${declarators.join(', ')};\n${i0}`
					);
				}

				if (needsObjectVar && needsPropertyVar) {
					code.prependRight(left.start, `( ${object} = `);
					code.overwrite(
						left.object.end,
						left.property.start,
						`, ${property} = `
					);
					code.overwrite(
						left.property.end,
						left.end,
						`, ${object}[${property}]`
					);
				} else if (needsObjectVar) {
					code.prependRight(left.start, `( ${object} = `);
					code.appendLeft(left.object.end, `, ${object}`);
				} else if (needsPropertyVar) {
					code.prependRight(left.property.start, `( ${property} = `);
					code.appendLeft(left.property.end, `, `);
					code.move(left.property.start, left.property.end, left.start);

					code.overwrite(left.object.end, left.property.start, `[${property}]`);
					code.remove(left.property.end, left.end);
				}

				if (needsPropertyVar) {
					code.appendLeft(this.end, ` )`);
				}
			}

			base =
				object +
				(left.computed || needsPropertyVar ? `[${property}]` : `.${property}`);
		}

		code.prependRight(this.right.start, `Math.pow( ${base}, `);
		code.appendLeft(this.right.end, ` )`);
	}
}

class BinaryExpression extends Node$1 {
	transpile(code, transforms) {
		if (this.operator === '**' && transforms.exponentiation) {
			code.prependRight(this.start, `Math.pow( `);
			code.overwrite(this.left.end, this.right.start, `, `);
			code.appendLeft(this.end, ` )`);
		}
		super.transpile(code, transforms);
	}
}

const loopStatement = /(?:For(?:In|Of)?|While)Statement/;

class BreakStatement extends Node$1 {
	initialise() {
		const loop = this.findNearest(loopStatement);
		const switchCase = this.findNearest('SwitchCase');

		if (loop && (!switchCase || loop.depth > switchCase.depth)) {
			loop.canBreak = true;
			this.loop = loop;
		}
	}

	transpile(code) {
		if (this.loop && this.loop.shouldRewriteAsFunction) {
			if (this.label)
				{ throw new CompileError(
					'Labels are not currently supported in a loop with locally-scoped variables',
					this
				); }
			code.overwrite(this.start, this.start + 5, `return 'break'`);
		}
	}
}

class CallExpression extends Node$1 {
	initialise(transforms) {
		if (transforms.spreadRest && this.arguments.length > 1) {
			const lexicalBoundary = this.findLexicalBoundary();

			let i = this.arguments.length;
			while (i--) {
				const arg = this.arguments[i];
				if (arg.type === 'SpreadElement' && isArguments(arg.argument)) {
					this.argumentsArrayAlias = lexicalBoundary.getArgumentsArrayAlias();
				}
			}
		}

		super.initialise(transforms);
	}

	transpile(code, transforms) {
		if (transforms.spreadRest && this.arguments.length) {
			let hasSpreadElements = false;
			let context;

			const firstArgument = this.arguments[0];

			if (this.arguments.length === 1) {
				if (firstArgument.type === 'SpreadElement') {
					code.remove(firstArgument.start, firstArgument.argument.start);
					hasSpreadElements = true;
				}
			} else {
				hasSpreadElements = spread(
					code,
					this.arguments,
					firstArgument.start,
					this.argumentsArrayAlias
				);
			}

			if (hasSpreadElements) {
				// we need to handle super() and super.method() differently
				// due to its instance
				let _super = null;
				if (this.callee.type === 'Super') {
					_super = this.callee;
				} else if (
					this.callee.type === 'MemberExpression' &&
					this.callee.object.type === 'Super'
				) {
					_super = this.callee.object;
				}

				if (!_super && this.callee.type === 'MemberExpression') {
					if (this.callee.object.type === 'Identifier') {
						context = this.callee.object.name;
					} else {
						context = this.findScope(true).createIdentifier('ref');
						const callExpression = this.callee.object;
						const enclosure = callExpression.findNearest(/Function/);
						const block = enclosure
							? enclosure.body.body
							: callExpression.findNearest(/^Program$/).body;
						const lastStatementInBlock = block[block.length - 1];
						const i0 = lastStatementInBlock.getIndentation();
						code.prependRight(callExpression.start, `(${context} = `);
						code.appendLeft(callExpression.end, `)`);
						code.appendLeft(lastStatementInBlock.end, `\n${i0}var ${context};`);
					}
				} else {
					context = 'void 0';
				}

				code.appendLeft(this.callee.end, '.apply');

				if (_super) {
					_super.noCall = true; // bit hacky...

					if (this.arguments.length > 1) {
						if (firstArgument.type !== 'SpreadElement') {
							code.prependRight(firstArgument.start, `[ `);
						}

						code.appendLeft(
							this.arguments[this.arguments.length - 1].end,
							' )'
						);
					}
				} else if (this.arguments.length === 1) {
					code.prependRight(firstArgument.start, `${context}, `);
				} else {
					if (firstArgument.type === 'SpreadElement') {
						code.appendLeft(firstArgument.start, `${context}, `);
					} else {
						code.appendLeft(firstArgument.start, `${context}, [ `);
					}

					code.appendLeft(this.arguments[this.arguments.length - 1].end, ' )');
				}
			}
		}

		if (transforms.trailingFunctionCommas && this.arguments.length) {
			removeTrailingComma(code, this.arguments[this.arguments.length - 1].end);
		}

		super.transpile(code, transforms);
	}
}

function findIndex(array, fn) {
	for (let i = 0; i < array.length; i += 1) {
		if (fn(array[i], i)) { return i; }
	}

	return -1;
}

let reserved = Object.create(null);
'do if in for let new try var case else enum eval null this true void with await break catch class const false super throw while yield delete export import public return static switch typeof default extends finally package private continue debugger function arguments interface protected implements instanceof'
	.split(' ')
	.forEach(word => (reserved[word] = true));

// TODO this code is pretty wild, tidy it up
class ClassBody extends Node$1 {
	transpile(code, transforms, inFunctionExpression, superName) {
		if (transforms.classes) {
			const name = this.parent.name;

			const indentStr = code.getIndentString();
			const i0 =
				this.getIndentation() + (inFunctionExpression ? indentStr : '');
			const i1 = i0 + indentStr;

			const constructorIndex = findIndex(
				this.body,
				node => node.kind === 'constructor'
			);
			const constructor = this.body[constructorIndex];

			let introBlock = '';
			let outroBlock = '';

			if (this.body.length) {
				code.remove(this.start, this.body[0].start);
				code.remove(this.body[this.body.length - 1].end, this.end);
			} else {
				code.remove(this.start, this.end);
			}

			if (constructor) {
				constructor.value.body.isConstructorBody = true;

				const previousMethod = this.body[constructorIndex - 1];
				const nextMethod = this.body[constructorIndex + 1];

				// ensure constructor is first
				if (constructorIndex > 0) {
					code.remove(previousMethod.end, constructor.start);
					code.move(
						constructor.start,
						nextMethod ? nextMethod.start : this.end - 1,
						this.body[0].start
					);
				}

				if (!inFunctionExpression) { code.appendLeft(constructor.end, ';'); }
			}

			let namedFunctions =
				this.program.options.namedFunctionExpressions !== false;
			let namedConstructor =
				namedFunctions ||
				this.parent.superClass ||
				this.parent.type !== 'ClassDeclaration';
			if (this.parent.superClass) {
				let inheritanceBlock = `if ( ${superName} ) ${name}.__proto__ = ${
					superName
				};\n${i0}${name}.prototype = Object.create( ${superName} && ${
					superName
				}.prototype );\n${i0}${name}.prototype.constructor = ${name};`;

				if (constructor) {
					introBlock += `\n\n${i0}` + inheritanceBlock;
				} else {
					const fn =
						`function ${name} () {` +
						(superName
							? `\n${i1}${superName}.apply(this, arguments);\n${i0}}`
							: `}`) +
						(inFunctionExpression ? '' : ';') +
						(this.body.length ? `\n\n${i0}` : '');

					inheritanceBlock = fn + inheritanceBlock;
					introBlock += inheritanceBlock + `\n\n${i0}`;
				}
			} else if (!constructor) {
				let fn = 'function ' + (namedConstructor ? name + ' ' : '') + '() {}';
				if (this.parent.type === 'ClassDeclaration') { fn += ';'; }
				if (this.body.length) { fn += `\n\n${i0}`; }

				introBlock += fn;
			}

			const scope = this.findScope(false);

			let prototypeGettersAndSetters = [];
			let staticGettersAndSetters = [];
			let prototypeAccessors;
			let staticAccessors;

			this.body.forEach((method, i) => {
				if (method.kind === 'constructor') {
					let constructorName = namedConstructor ? ' ' + name : '';
					code.overwrite(
						method.key.start,
						method.key.end,
						`function${constructorName}`
					);
					return;
				}

				if (method.static) {
					const len = code.original[method.start + 6] == ' ' ? 7 : 6;
					code.remove(method.start, method.start + len);
				}

				const isAccessor = method.kind !== 'method';
				let lhs;

				let methodName = method.key.name;
				if (
					reserved[methodName] ||
					method.value.body.scope.references[methodName]
				) {
					methodName = scope.createIdentifier(methodName);
				}

				// when method name is a string or a number let's pretend it's a computed method

				let fake_computed = false;
				if (!method.computed && method.key.type === 'Literal') {
					fake_computed = true;
					method.computed = true;
				}

				if (isAccessor) {
					if (method.computed) {
						throw new Error(
							'Computed accessor properties are not currently supported'
						);
					}

					code.remove(method.start, method.key.start);

					if (method.static) {
						if (!~staticGettersAndSetters.indexOf(method.key.name))
							{ staticGettersAndSetters.push(method.key.name); }
						if (!staticAccessors)
							{ staticAccessors = scope.createIdentifier('staticAccessors'); }

						lhs = `${staticAccessors}`;
					} else {
						if (!~prototypeGettersAndSetters.indexOf(method.key.name))
							{ prototypeGettersAndSetters.push(method.key.name); }
						if (!prototypeAccessors)
							{ prototypeAccessors = scope.createIdentifier('prototypeAccessors'); }

						lhs = `${prototypeAccessors}`;
					}
				} else {
					lhs = method.static ? `${name}` : `${name}.prototype`;
				}

				if (!method.computed) { lhs += '.'; }

				const insertNewlines =
					(constructorIndex > 0 && i === constructorIndex + 1) ||
					(i === 0 && constructorIndex === this.body.length - 1);

				if (insertNewlines) { lhs = `\n\n${i0}${lhs}`; }

				let c = method.key.end;
				if (method.computed) {
					if (fake_computed) {
						code.prependRight(method.key.start, '[');
						code.appendLeft(method.key.end, ']');
					} else {
						while (code.original[c] !== ']') { c += 1; }
						c += 1;
					}
				}

				const funcName =
					method.computed || isAccessor || !namedFunctions
						? ''
						: `${methodName} `;
				const rhs =
					(isAccessor ? `.${method.kind}` : '') +
					` = function` +
					(method.value.generator ? '* ' : ' ') +
					funcName;
				code.remove(c, method.value.start);
				code.prependRight(method.value.start, rhs);
				code.appendLeft(method.end, ';');

				if (method.value.generator) { code.remove(method.start, method.key.start); }

				code.prependRight(method.start, lhs);
			});

			if (prototypeGettersAndSetters.length || staticGettersAndSetters.length) {
				let intro = [];
				let outro = [];

				if (prototypeGettersAndSetters.length) {
					intro.push(
						`var ${prototypeAccessors} = { ${prototypeGettersAndSetters
							.map(name => `${name}: { configurable: true }`)
							.join(',')} };`
					);
					outro.push(
						`Object.defineProperties( ${name}.prototype, ${
							prototypeAccessors
						} );`
					);
				}

				if (staticGettersAndSetters.length) {
					intro.push(
						`var ${staticAccessors} = { ${staticGettersAndSetters
							.map(name => `${name}: { configurable: true }`)
							.join(',')} };`
					);
					outro.push(`Object.defineProperties( ${name}, ${staticAccessors} );`);
				}

				if (constructor) { introBlock += `\n\n${i0}`; }
				introBlock += intro.join(`\n${i0}`);
				if (!constructor) { introBlock += `\n\n${i0}`; }

				outroBlock += `\n\n${i0}` + outro.join(`\n${i0}`);
			}

			if (constructor) {
				code.appendLeft(constructor.end, introBlock);
			} else {
				code.prependRight(this.start, introBlock);
			}

			code.appendLeft(this.end, outroBlock);
		}

		super.transpile(code, transforms);
	}
}

// TODO this function is slightly flawed – it works on the original string,
// not its current edited state.
// That's not a problem for the way that it's currently used, but it could
// be in future...
function deindent(node, code) {
	const start = node.start;
	const end = node.end;

	const indentStr = code.getIndentString();
	const indentStrLen = indentStr.length;
	const indentStart = start - indentStrLen;

	if (
		!node.program.indentExclusions[indentStart] &&
		code.original.slice(indentStart, start) === indentStr
	) {
		code.remove(indentStart, start);
	}

	const pattern = new RegExp(indentStr + '\\S', 'g');
	const slice = code.original.slice(start, end);
	let match;

	while ((match = pattern.exec(slice))) {
		const removeStart = start + match.index;
		if (!node.program.indentExclusions[removeStart]) {
			code.remove(removeStart, removeStart + indentStrLen);
		}
	}
}

class ClassDeclaration extends Node$1 {
	initialise(transforms) {
		if (this.id) {
			this.name = this.id.name;
			this.findScope(true).addDeclaration(this.id, 'class');
		} else {
			this.name = this.findScope(true).createIdentifier("defaultExport");
		}

		super.initialise(transforms);
	}

	transpile(code, transforms) {
		if (transforms.classes) {
			if (!this.superClass) { deindent(this.body, code); }

			const superName =
				this.superClass && (this.superClass.name || 'superclass');

			const i0 = this.getIndentation();
			const i1 = i0 + code.getIndentString();

			// if this is an export default statement, we have to move the export to
			// after the declaration, because `export default var Foo = ...` is illegal
			const isExportDefaultDeclaration = this.parent.type === 'ExportDefaultDeclaration';

			if (isExportDefaultDeclaration) {
				code.remove(this.parent.start, this.start);
			}

			let c = this.start;
			if (this.id) {
				code.overwrite(c, this.id.start, 'var ');
				c = this.id.end;
			} else {
				code.prependLeft(c, `var ${this.name}`);
			}

			if (this.superClass) {
				if (this.superClass.end === this.body.start) {
					code.remove(c, this.superClass.start);
					code.appendLeft(c, ` = (function (${superName}) {\n${i1}`);
				} else {
					code.overwrite(c, this.superClass.start, ' = ');
					code.overwrite(
						this.superClass.end,
						this.body.start,
						`(function (${superName}) {\n${i1}`
					);
				}
			} else {
				if (c === this.body.start) {
					code.appendLeft(c, ' = ');
				} else {
					code.overwrite(c, this.body.start, ' = ');
				}
			}

			this.body.transpile(code, transforms, !!this.superClass, superName);

			const syntheticDefaultExport =
				isExportDefaultDeclaration
					? `\n\n${i0}export default ${this.name};`
					: '';
			if (this.superClass) {
				code.appendLeft(this.end, `\n\n${i1}return ${this.name};\n${i0}}(`);
				code.move(this.superClass.start, this.superClass.end, this.end);
				code.prependRight(this.end, `));${syntheticDefaultExport}`);
			} else if (syntheticDefaultExport) {
				code.prependRight(this.end, syntheticDefaultExport);
			}
		} else {
			this.body.transpile(code, transforms, false, null);
		}
	}
}

class ClassExpression extends Node$1 {
	initialise(transforms) {
		this.name = ( this.id
			? this.id.name
			: this.parent.type === 'VariableDeclarator'
				? this.parent.id.name
				: this.parent.type !== 'AssignmentExpression'
					? null
					: this.parent.left.type === 'Identifier'
						? this.parent.left.name
						: this.parent.left.type === 'MemberExpression'
							? this.parent.left.property.name
							: null ) || this.findScope(true).createIdentifier('anonymous');

		super.initialise(transforms);
	}

	transpile(code, transforms) {
		if (transforms.classes) {
			const superName =
				this.superClass && (this.superClass.name || 'superclass');

			const i0 = this.getIndentation();
			const i1 = i0 + code.getIndentString();

			if (this.superClass) {
				code.remove(this.start, this.superClass.start);
				code.remove(this.superClass.end, this.body.start);
				code.appendLeft(this.start, `(function (${superName}) {\n${i1}`);
			} else {
				code.overwrite(this.start, this.body.start, `(function () {\n${i1}`);
			}

			this.body.transpile(code, transforms, true, superName);

			const outro = `\n\n${i1}return ${this.name};\n${i0}}(`;

			if (this.superClass) {
				code.appendLeft(this.end, outro);
				code.move(this.superClass.start, this.superClass.end, this.end);
				code.prependRight(this.end, '))');
			} else {
				code.appendLeft(this.end, `\n\n${i1}return ${this.name};\n${i0}}())`);
			}
		} else {
			this.body.transpile(code, transforms, false);
		}
	}
}

class ContinueStatement extends Node$1 {
	transpile(code) {
		const loop = this.findNearest(loopStatement);
		if (loop.shouldRewriteAsFunction) {
			if (this.label)
				{ throw new CompileError(
					'Labels are not currently supported in a loop with locally-scoped variables',
					this
				); }
			code.overwrite(this.start, this.start + 8, 'return');
		}
	}
}

class ExportDefaultDeclaration extends Node$1 {
	initialise(transforms) {
		if (transforms.moduleExport)
			{ throw new CompileError('export is not supported', this); }
		super.initialise(transforms);
	}
}

class ExportNamedDeclaration extends Node$1 {
	initialise(transforms) {
		if (transforms.moduleExport)
			{ throw new CompileError('export is not supported', this); }
		super.initialise(transforms);
	}
}

class LoopStatement extends Node$1 {
	findScope(functionScope) {
		return functionScope || !this.createdScope
			? this.parent.findScope(functionScope)
			: this.body.scope;
	}

	initialise(transforms) {
		this.body.createScope();
		this.createdScope = true;

		// this is populated as and when reassignments occur
		this.reassigned = Object.create(null);
		this.aliases = Object.create(null);

		super.initialise(transforms);

		if (transforms.letConst) {
			// see if any block-scoped declarations are referenced
			// inside function expressions
			const names = Object.keys(this.body.scope.declarations);

			let i = names.length;
			while (i--) {
				const name = names[i];
				const declaration = this.body.scope.declarations[name];

				let j = declaration.instances.length;
				while (j--) {
					const instance = declaration.instances[j];
					const nearestFunctionExpression = instance.findNearest(/Function/);

					if (
						nearestFunctionExpression &&
						nearestFunctionExpression.depth > this.depth
					) {
						this.shouldRewriteAsFunction = true;
						break;
					}
				}

				if (this.shouldRewriteAsFunction) { break; }
			}
		}
	}

	transpile(code, transforms) {
		const needsBlock =
			this.type != 'ForOfStatement' &&
			(this.body.type !== 'BlockStatement' ||
				(this.body.type === 'BlockStatement' && this.body.synthetic));

		if (this.shouldRewriteAsFunction) {
			const i0 = this.getIndentation();
			const i1 = i0 + code.getIndentString();

			const argString = this.args ? ` ${this.args.join(', ')} ` : '';
			const paramString = this.params ? ` ${this.params.join(', ')} ` : '';

			const functionScope = this.findScope(true);
			const loop = functionScope.createIdentifier('loop');

			const before =
				`var ${loop} = function (${paramString}) ` +
				(this.body.synthetic ? `{\n${i0}${code.getIndentString()}` : '');
			const after = (this.body.synthetic ? `\n${i0}}` : '') + `;\n\n${i0}`;

			code.prependRight(this.body.start, before);
			code.appendLeft(this.body.end, after);
			code.move(this.start, this.body.start, this.body.end);

			if (this.canBreak || this.canReturn) {
				const returned = functionScope.createIdentifier('returned');

				let insert = `{\n${i1}var ${returned} = ${loop}(${argString});\n`;
				if (this.canBreak)
					{ insert += `\n${i1}if ( ${returned} === 'break' ) break;`; }
				if (this.canReturn)
					{ insert += `\n${i1}if ( ${returned} ) return ${returned}.v;`; }
				insert += `\n${i0}}`;

				code.prependRight(this.body.end, insert);
			} else {
				const callExpression = `${loop}(${argString});`;

				if (this.type === 'DoWhileStatement') {
					code.overwrite(
						this.start,
						this.body.start,
						`do {\n${i1}${callExpression}\n${i0}}`
					);
				} else {
					code.prependRight(this.body.end, callExpression);
				}
			}
		} else if (needsBlock) {
			code.appendLeft(this.body.start, '{ ');
			code.prependRight(this.body.end, ' }');
		}

		super.transpile(code, transforms);
	}
}

function extractNames(node) {
	const names = [];
	extractors[node.type](names, node);
	return names;
}

const extractors = {
	Identifier(names, node) {
		names.push(node);
	},

	ObjectPattern(names, node) {
		for (var i = 0, list = node.properties; i < list.length; i += 1) {
			const prop = list[i];

			extractors[prop.type](names, prop);
		}
	},

	Property(names, node) {
		extractors[node.value.type](names, node.value);
	},

	ArrayPattern(names, node) {
		for (var i = 0, list = node.elements; i < list.length; i += 1) {
			const element = list[i];

			if (element) { extractors[element.type](names, element); }
		}
	},

	RestElement(names, node) {
		extractors[node.argument.type](names, node.argument);
	},

	AssignmentPattern(names, node) {
		extractors[node.left.type](names, node.left);
	}
};

class ForStatement extends LoopStatement {
	findScope(functionScope) {
		return functionScope || !this.createdScope
			? this.parent.findScope(functionScope)
			: this.body.scope;
	}

	transpile(code, transforms) {
		const i1 = this.getIndentation() + code.getIndentString();

		if (this.shouldRewriteAsFunction) {
			// which variables are declared in the init statement?
			const names =
				this.init.type === 'VariableDeclaration'
					? [].concat.apply(
							[],
							this.init.declarations.map(declarator =>
								extractNames(declarator.id)
							)
						)
					: [];

			const aliases = this.aliases;

			this.args = names.map(
				name => (name in this.aliases ? this.aliases[name].outer : name)
			);
			this.params = names.map(
				name => (name in this.aliases ? this.aliases[name].inner : name)
			);

			const updates = Object.keys(this.reassigned).map(
				name => `${aliases[name].outer} = ${aliases[name].inner};`
			);

			if (updates.length) {
				if (this.body.synthetic) {
					code.appendLeft(this.body.body[0].end, `; ${updates.join(` `)}`);
				} else {
					const lastStatement = this.body.body[this.body.body.length - 1];
					code.appendLeft(
						lastStatement.end,
						`\n\n${i1}${updates.join(`\n${i1}`)}`
					);
				}
			}
		}

		super.transpile(code, transforms);
	}
}

class ForInStatement extends LoopStatement {
	findScope(functionScope) {
		return functionScope || !this.createdScope
			? this.parent.findScope(functionScope)
			: this.body.scope;
	}

	transpile(code, transforms) {
		if (this.shouldRewriteAsFunction) {
			// which variables are declared in the init statement?
			const names =
				this.left.type === 'VariableDeclaration'
					? [].concat.apply(
							[],
							this.left.declarations.map(declarator =>
								extractNames(declarator.id)
							)
						)
					: [];

			this.args = names.map(
				name => (name in this.aliases ? this.aliases[name].outer : name)
			);
			this.params = names.map(
				name => (name in this.aliases ? this.aliases[name].inner : name)
			);
		}

		super.transpile(code, transforms);
	}
}

const handlers = {
	Identifier: destructureIdentifier,
	AssignmentPattern: destructureAssignmentPattern,
	ArrayPattern: destructureArrayPattern,
	ObjectPattern: destructureObjectPattern
};

function destructure(
	code,
	scope,
	node,
	ref,
	inline,
	statementGenerators
) {
	handlers[node.type](code, scope, node, ref, inline, statementGenerators);
}

function destructureIdentifier(
	code,
	scope,
	node,
	ref,
	inline,
	statementGenerators
) {
	statementGenerators.push((start, prefix, suffix) => {
		code.prependRight(node.start, inline ? prefix : `${prefix}var `);
		code.appendLeft(node.end, ` = ${ref}${suffix}`);
		code.move(node.start, node.end, start);
	});
}

function destructureAssignmentPattern(
	code,
	scope,
	node,
	ref,
	inline,
	statementGenerators
) {
	const isIdentifier = node.left.type === 'Identifier';
	const name = isIdentifier ? node.left.name : ref;

	if (!inline) {
		statementGenerators.push((start, prefix, suffix) => {
			code.prependRight(
				node.left.end,
				`${prefix}if ( ${name} === void 0 ) ${name}`
			);
			code.move(node.left.end, node.right.end, start);
			code.appendLeft(node.right.end, suffix);
		});
	}

	if (!isIdentifier) {
		destructure(code, scope, node.left, ref, inline, statementGenerators);
	}
}

function destructureArrayPattern(
	code,
	scope,
	node,
	ref,
	inline,
	statementGenerators
) {
	let c = node.start;

	node.elements.forEach((element, i) => {
		if (!element) { return; }

		if (element.type === 'RestElement') {
			handleProperty(
				code,
				scope,
				c,
				element.argument,
				`${ref}.slice(${i})`,
				inline,
				statementGenerators
			);
		} else {
			handleProperty(
				code,
				scope,
				c,
				element,
				`${ref}[${i}]`,
				inline,
				statementGenerators
			);
		}
		c = element.end;
	});

	code.remove(c, node.end);
}

function destructureObjectPattern(
	code,
	scope,
	node,
	ref,
	inline,
	statementGenerators
) {
	let c = node.start;

	const nonRestKeys = [];
	node.properties.forEach(prop => {
		let value;
		let content;
		if (prop.type === 'Property') {
			const isComputedKey = prop.computed || prop.key.type !== 'Identifier';
			const key = isComputedKey
				? code.slice(prop.key.start, prop.key.end)
				: prop.key.name;
			value = isComputedKey ? `${ref}[${key}]` : `${ref}.${key}`;
			content = prop.value;
			nonRestKeys.push(isComputedKey ? key : '"' + key + '"');
		} else if (prop.type === 'RestElement') {
			content = prop.argument;
			value = scope.createIdentifier('rest');
			const n = scope.createIdentifier('n');
			statementGenerators.push((start, prefix, suffix) => {
				code.overwrite(
					prop.start,
					(c = prop.argument.start),
					`${prefix}var ${value} = {}; for (var ${n} in ${ref}) if([${nonRestKeys.join(
						', '
					)}].indexOf(${n}) === -1) ${value}[${n}] = ${ref}[${n}]${suffix}`
				);
				code.move(prop.start, c, start);
			});
		} else {
			throw new CompileError(
				this,
				`Unexpected node of type ${prop.type} in object pattern`
			);
		}
		handleProperty(code, scope, c, content, value, inline, statementGenerators);
		c = prop.end;
	});

	code.remove(c, node.end);
}

function handleProperty(
	code,
	scope,
	c,
	node,
	value,
	inline,
	statementGenerators
) {
	switch (node.type) {
		case 'Identifier': {
			code.remove(c, node.start);
			destructureIdentifier(
				code,
				scope,
				node,
				value,
				inline,
				statementGenerators
			);
			break;
		}

		case 'AssignmentPattern': {
			let name;

			const isIdentifier = node.left.type === 'Identifier';

			if (isIdentifier) {
				name = node.left.name;
				const declaration = scope.findDeclaration(name);
				if (declaration) { name = declaration.name; }
			} else {
				name = scope.createIdentifier(value);
			}

			statementGenerators.push((start, prefix, suffix) => {
				if (inline) {
					code.prependRight(
						node.right.start,
						`${name} = ${value} === undefined ? `
					);
					code.appendLeft(node.right.end, ` : ${value}`);
				} else {
					code.prependRight(
						node.right.start,
						`${prefix}var ${name} = ${value}; if ( ${name} === void 0 ) ${name} = `
					);
					code.appendLeft(node.right.end, suffix);
				}

				code.move(node.right.start, node.right.end, start);
			});

			if (isIdentifier) {
				code.remove(c, node.right.start);
			} else {
				code.remove(c, node.left.start);
				code.remove(node.left.end, node.right.start);
				handleProperty(
					code,
					scope,
					c,
					node.left,
					name,
					inline,
					statementGenerators
				);
			}

			break;
		}

		case 'ObjectPattern': {
			code.remove(c, (c = node.start));

			let ref = value;
			if (node.properties.length > 1) {
				ref = scope.createIdentifier(value);

				statementGenerators.push((start, prefix, suffix) => {
					// this feels a tiny bit hacky, but we can't do a
					// straightforward appendLeft and keep correct order...
					code.prependRight(node.start, `${prefix}var ${ref} = `);
					code.overwrite(node.start, (c = node.start + 1), value);
					code.appendLeft(c, suffix);

					code.overwrite(
						node.start,
						(c = node.start + 1),
						`${prefix}var ${ref} = ${value}${suffix}`
					);
					code.move(node.start, c, start);
				});
			}

			destructureObjectPattern(
				code,
				scope,
				node,
				ref,
				inline,
				statementGenerators
			);

			break;
		}

		case 'ArrayPattern': {
			code.remove(c, (c = node.start));

			if (node.elements.filter(Boolean).length > 1) {
				const ref = scope.createIdentifier(value);

				statementGenerators.push((start, prefix, suffix) => {
					code.prependRight(node.start, `${prefix}var ${ref} = `);
					code.overwrite(node.start, (c = node.start + 1), value, {
						contentOnly: true
					});
					code.appendLeft(c, suffix);

					code.move(node.start, c, start);
				});

				node.elements.forEach((element, i) => {
					if (!element) { return; }

					if (element.type === 'RestElement') {
						handleProperty(
							code,
							scope,
							c,
							element.argument,
							`${ref}.slice(${i})`,
							inline,
							statementGenerators
						);
					} else {
						handleProperty(
							code,
							scope,
							c,
							element,
							`${ref}[${i}]`,
							inline,
							statementGenerators
						);
					}
					c = element.end;
				});
			} else {
				const index = findIndex(node.elements, Boolean);
				const element = node.elements[index];
				if (element.type === 'RestElement') {
					handleProperty(
						code,
						scope,
						c,
						element.argument,
						`${value}.slice(${index})`,
						inline,
						statementGenerators
					);
				} else {
					handleProperty(
						code,
						scope,
						c,
						element,
						`${value}[${index}]`,
						inline,
						statementGenerators
					);
				}
				c = element.end;
			}

			code.remove(c, node.end);
			break;
		}

		default: {
			throw new Error(`Unexpected node type in destructuring (${node.type})`);
		}
	}
}

class ForOfStatement extends LoopStatement {
	initialise(transforms) {
		if (transforms.forOf && !transforms.dangerousForOf)
			{ throw new CompileError(
				"for...of statements are not supported. Use `transforms: { forOf: false }` to skip transformation and disable this error, or `transforms: { dangerousForOf: true }` if you know what you're doing",
				this
			); }
		super.initialise(transforms);
	}

	transpile(code, transforms) {
		super.transpile(code, transforms);
		if (!transforms.dangerousForOf) { return; }

		// edge case (#80)
		if (!this.body.body[0]) {
			if (
				this.left.type === 'VariableDeclaration' &&
				this.left.kind === 'var'
			) {
				code.remove(this.start, this.left.start);
				code.appendLeft(this.left.end, ';');
				code.remove(this.left.end, this.end);
			} else {
				code.remove(this.start, this.end);
			}

			return;
		}

		const scope = this.findScope(true);
		const i0 = this.getIndentation();
		const i1 = i0 + code.getIndentString();

		const key = scope.createIdentifier('i');
		const list = scope.createIdentifier('list');

		if (this.body.synthetic) {
			code.prependRight(this.left.start, `{\n${i1}`);
			code.appendLeft(this.body.body[0].end, `\n${i0}}`);
		}

		const bodyStart = this.body.body[0].start;

		code.remove(this.left.end, this.right.start);
		code.move(this.left.start, this.left.end, bodyStart);

		code.prependRight(this.right.start, `var ${key} = 0, ${list} = `);
		code.appendLeft(this.right.end, `; ${key} < ${list}.length; ${key} += 1`);

		// destructuring. TODO non declaration destructuring
		const declarator =
			this.left.type === 'VariableDeclaration' && this.left.declarations[0];
		if (declarator && declarator.id.type !== 'Identifier') {
			let statementGenerators = [];
			const ref = scope.createIdentifier('ref');
			destructure(code, scope, declarator.id, ref, false, statementGenerators);

			let suffix = `;\n${i1}`;
			statementGenerators.forEach((fn, i) => {
				if (i === statementGenerators.length - 1) {
					suffix = `;\n\n${i1}`;
				}

				fn(bodyStart, '', suffix);
			});

			code.appendLeft(this.left.start + this.left.kind.length + 1, ref);
			code.appendLeft(this.left.end, ` = ${list}[${key}];\n${i1}`);
		} else {
			code.appendLeft(this.left.end, ` = ${list}[${key}];\n\n${i1}`);
		}
	}
}

class FunctionDeclaration extends Node$1 {
	initialise(transforms) {
		if (this.generator && transforms.generator) {
			throw new CompileError('Generators are not supported', this);
		}

		this.body.createScope();

		if (this.id) {
			this.findScope(true).addDeclaration(this.id, 'function');
		}
		super.initialise(transforms);
	}

	transpile(code, transforms) {
		super.transpile(code, transforms);
		if (transforms.trailingFunctionCommas && this.params.length) {
			removeTrailingComma(code, this.params[this.params.length - 1].end);
		}
	}
}

class FunctionExpression extends Node$1 {
	initialise(transforms) {
		if (this.generator && transforms.generator) {
			throw new CompileError('Generators are not supported', this);
		}

		this.body.createScope();

		if (this.id) {
			// function expression IDs belong to the child scope...
			this.body.scope.addDeclaration(this.id, 'function');
		}

		super.initialise(transforms);

		const parent = this.parent;
		let methodName;

		if (
			transforms.conciseMethodProperty &&
			parent.type === 'Property' &&
			parent.kind === 'init' &&
			parent.method &&
			parent.key.type === 'Identifier'
		) {
			// object literal concise method
			methodName = parent.key.name;
		} else if (
			transforms.classes &&
			parent.type === 'MethodDefinition' &&
			parent.kind === 'method' &&
			parent.key.type === 'Identifier'
		) {
			// method definition in a class
			methodName = parent.key.name;
		} else if (this.id && this.id.type === 'Identifier') {
			// naked function expression
			methodName = this.id.alias || this.id.name;
		}

		if (methodName) {
			for (var i = 0, list = this.params; i < list.length; i += 1) {
				const param = list[i];

				if (param.type === 'Identifier' && methodName === param.name) {
					// workaround for Safari 9/WebKit bug:
					// https://gitlab.com/Rich-Harris/buble/issues/154
					// change parameter name when same as method name

					const scope = this.body.scope;
					const declaration = scope.declarations[methodName];

					const alias = scope.createIdentifier(methodName);
					param.alias = alias;

					for (var i$1 = 0, list$1 = declaration.instances; i$1 < list$1.length; i$1 += 1) {
						const identifier = list$1[i$1];

						identifier.alias = alias;
					}

					break;
				}
			}
		}
	}

	transpile(code, transforms) {
		super.transpile(code, transforms);
		if (transforms.trailingFunctionCommas && this.params.length) {
			removeTrailingComma(code, this.params[this.params.length - 1].end);
		}
	}
}

function isReference(node, parent) {
	if (node.type === 'MemberExpression') {
		return !node.computed && isReference(node.object, node);
	}

	if (node.type === 'Identifier') {
		// the only time we could have an identifier node without a parent is
		// if it's the entire body of a function without a block statement –
		// i.e. an arrow function expression like `a => a`
		if (!parent) { return true; }

		if (/(Function|Class)Expression/.test(parent.type)) { return false; }

		if (parent.type === 'VariableDeclarator') { return node === parent.init; }

		// TODO is this right?
		if (
			parent.type === 'MemberExpression' ||
			parent.type === 'MethodDefinition'
		) {
			return parent.computed || node === parent.object;
		}

		if (parent.type === 'ArrayPattern') { return false; }

		// disregard the `bar` in `{ bar: foo }`, but keep it in `{ [bar]: foo }`
		if (parent.type === 'Property') {
			if (parent.parent.type === 'ObjectPattern') { return false; }
			return parent.computed || node === parent.value;
		}

		// disregard the `bar` in `class Foo { bar () {...} }`
		if (parent.type === 'MethodDefinition') { return false; }

		// disregard the `bar` in `export { foo as bar }`
		if (parent.type === 'ExportSpecifier' && node !== parent.local)
			{ return false; }

		return true;
	}
}

class Identifier extends Node$1 {
	findScope(functionScope) {
		if (this.parent.params && ~this.parent.params.indexOf(this)) {
			return this.parent.body.scope;
		}

		if (this.parent.type === 'FunctionExpression' && this === this.parent.id) {
			return this.parent.body.scope;
		}

		return this.parent.findScope(functionScope);
	}

	initialise(transforms) {
		if (transforms.arrow && isReference(this, this.parent)) {
			if (
				this.name === 'arguments' &&
				!this.findScope(false).contains(this.name)
			) {
				const lexicalBoundary = this.findLexicalBoundary();
				const arrowFunction = this.findNearest('ArrowFunctionExpression');
				const loop = this.findNearest(loopStatement);

				if (arrowFunction && arrowFunction.depth > lexicalBoundary.depth) {
					this.alias = lexicalBoundary.getArgumentsAlias();
				}

				if (
					loop &&
					loop.body.contains(this) &&
					loop.depth > lexicalBoundary.depth
				) {
					this.alias = lexicalBoundary.getArgumentsAlias();
				}
			}

			this.findScope(false).addReference(this);
		}
	}

	transpile(code) {
		if (this.alias) {
			code.overwrite(this.start, this.end, this.alias, {
				storeName: true,
				contentOnly: true
			});
		}
	}
}

class IfStatement extends Node$1 {
	initialise(transforms) {
		super.initialise(transforms);
	}

	transpile(code, transforms) {
		if (
			this.consequent.type !== 'BlockStatement' ||
			(this.consequent.type === 'BlockStatement' && this.consequent.synthetic)
		) {
			code.appendLeft(this.consequent.start, '{ ');
			code.prependRight(this.consequent.end, ' }');
		}

		if (
			this.alternate &&
			this.alternate.type !== 'IfStatement' &&
			(this.alternate.type !== 'BlockStatement' ||
				(this.alternate.type === 'BlockStatement' && this.alternate.synthetic))
		) {
			code.appendLeft(this.alternate.start, '{ ');
			code.prependRight(this.alternate.end, ' }');
		}

		super.transpile(code, transforms);
	}
}

class ImportDeclaration extends Node$1 {
	initialise(transforms) {
		if (transforms.moduleImport)
			{ throw new CompileError('import is not supported', this); }
		super.initialise(transforms);
	}
}

class ImportDefaultSpecifier extends Node$1 {
	initialise(transforms) {
		this.findScope(true).addDeclaration(this.local, 'import');
		super.initialise(transforms);
	}
}

class ImportSpecifier extends Node$1 {
	initialise(transforms) {
		this.findScope(true).addDeclaration(this.local, 'import');
		super.initialise(transforms);
	}
}

const hasDashes = val => /-/.test(val);

const formatKey = key => (hasDashes(key) ? `'${key}'` : key);

const formatVal = val => (val ? '' : 'true');

class JSXAttribute extends Node$1 {
	transpile(code, transforms) {
		const ref = this.name;
		var start = ref.start;
		var name = ref.name;

		// Overwrite equals sign if value is present.
		const end = this.value ? this.value.start : this.name.end;

		code.overwrite(start, end, `${formatKey(name)}: ${formatVal(this.value)}`);

		super.transpile(code, transforms);
	}
}

function containsNewLine(node) {
	return (
		node.type === 'Literal' && !/\S/.test(node.value) && /\n/.test(node.value)
	);
}

class JSXClosingElement extends Node$1 {
	transpile(code) {
		let spaceBeforeParen = true;

		const lastChild = this.parent.children[this.parent.children.length - 1];

		// omit space before closing paren if
		//   a) this is on a separate line, or
		//   b) there are no children but there are attributes
		if (
			(lastChild && containsNewLine(lastChild)) ||
			this.parent.openingElement.attributes.length
		) {
			spaceBeforeParen = false;
		}

		code.overwrite(this.start, this.end, spaceBeforeParen ? ' )' : ')');
	}
}

function normalise(str, removeTrailingWhitespace) {
	if (removeTrailingWhitespace && /\n/.test(str)) {
		str = str.replace(/\s+$/, '');
	}

	str = str
		.replace(/^\n\r?\s+/, '') // remove leading newline + space
		.replace(/\s*\n\r?\s*/gm, ' '); // replace newlines with spaces

	// TODO prefer single quotes?
	return JSON.stringify(str);
}

class JSXElement extends Node$1 {
	transpile(code, transforms) {
		super.transpile(code, transforms);

		const children = this.children.filter(child => {
			if (child.type !== 'Literal') { return true; }

			// remove whitespace-only literals, unless on a single line
			return /\S/.test(child.raw) || !/\n/.test(child.raw);
		});

		if (children.length) {
			let c = this.openingElement.end;

			let i;
			for (i = 0; i < children.length; i += 1) {
				const child = children[i];

				if (
					child.type === 'JSXExpressionContainer' &&
					child.expression.type === 'JSXEmptyExpression'
				) {
					// empty block is a no op
				} else {
					const tail =
						code.original[c] === '\n' && child.type !== 'Literal' ? '' : ' ';
					code.appendLeft(c, `,${tail}`);
				}

				if (child.type === 'Literal') {
					const str = normalise(child.raw, i === children.length - 1);
					code.overwrite(child.start, child.end, str);
				}

				c = child.end;
			}
		}
	}
}

class JSXExpressionContainer extends Node$1 {
	transpile(code, transforms) {
		code.remove(this.start, this.expression.start);
		code.remove(this.expression.end, this.end);

		super.transpile(code, transforms);
	}
}

class JSXOpeningElement extends Node$1 {
	transpile(code, transforms) {
		super.transpile(code, transforms);

		code.overwrite(this.start, this.name.start, `${this.program.jsx}( `);

		const html =
			this.name.type === 'JSXIdentifier' &&
			this.name.name[0] === this.name.name[0].toLowerCase();
		if (html) { code.prependRight(this.name.start, `'`); }

		const len = this.attributes.length;
		let c = this.name.end;

		if (len) {
			let i;

			let hasSpread = false;
			for (i = 0; i < len; i += 1) {
				if (this.attributes[i].type === 'JSXSpreadAttribute') {
					hasSpread = true;
					break;
				}
			}

			c = this.attributes[0].end;

			for (i = 0; i < len; i += 1) {
				const attr = this.attributes[i];

				if (i > 0) {
					if (attr.start === c) { code.prependRight(c, ', '); }
					else { code.overwrite(c, attr.start, ', '); }
				}

				if (hasSpread && attr.type !== 'JSXSpreadAttribute') {
					const lastAttr = this.attributes[i - 1];
					const nextAttr = this.attributes[i + 1];

					if (!lastAttr || lastAttr.type === 'JSXSpreadAttribute') {
						code.prependRight(attr.start, '{ ');
					}

					if (!nextAttr || nextAttr.type === 'JSXSpreadAttribute') {
						code.appendLeft(attr.end, ' }');
					}
				}

				c = attr.end;
			}

			let after;
			let before;
			if (hasSpread) {
				if (len === 1) {
					before = html ? `',` : ',';
				} else {
					if (!this.program.options.objectAssign) {
						throw new CompileError(
							"Mixed JSX attributes ending in spread requires specified objectAssign option with 'Object.assign' or polyfill helper.",
							this
						);
					}
					before = html
						? `', ${this.program.options.objectAssign}({},`
						: `, ${this.program.options.objectAssign}({},`;
					after = ')';
				}
			} else {
				before = html ? `', {` : ', {';
				after = ' }';
			}

			code.prependRight(this.name.end, before);

			if (after) {
				code.appendLeft(this.attributes[len - 1].end, after);
			}
		} else {
			code.appendLeft(this.name.end, html ? `', null` : `, null`);
			c = this.name.end;
		}

		if (this.selfClosing) {
			code.overwrite(c, this.end, this.attributes.length ? `)` : ` )`);
		} else {
			code.remove(c, this.end);
		}
	}
}

class JSXSpreadAttribute extends Node$1 {
	transpile(code, transforms) {
		code.remove(this.start, this.argument.start);
		code.remove(this.argument.end, this.end);

		super.transpile(code, transforms);
	}
}

var commonjsGlobal$1 = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};

function commonjsRequire$1 () {
	throw new Error('Dynamic requires are not currently supported by rollup-plugin-commonjs');
}



function createCommonjsModule$1(fn, module) {
	return module = { exports: {} }, fn(module, module.exports), module.exports;
}

var regjsgen = createCommonjsModule$1(function (module, exports) {
/*!
 * regjsgen 0.3.0
 * Copyright 2014-2016 Benjamin Tan <https://demoneaux.github.io/>
 * Available under MIT license <https://github.com/demoneaux/regjsgen/blob/master/LICENSE>
 */
(function() {
  var objectTypes = {
    'function': true,
    'object': true
  };

  // Used as a reference to the global object.
  var root = (objectTypes[typeof window] && window) || this;

  // Detect free variable `exports`.
  var freeExports = objectTypes['object'] && exports;

  // Detect free variable `module`.
  var freeModule = objectTypes['object'] && module && !module.nodeType && module;

  // Detect free variable `global` from Node.js or Browserified code and use it as `root`.
  var freeGlobal = freeExports && freeModule && typeof commonjsGlobal$1 == 'object' && commonjsGlobal$1;
  if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal || freeGlobal.self === freeGlobal)) {
    root = freeGlobal;
  }

  // Used to check objects for own properties.
  var hasOwnProperty = Object.prototype.hasOwnProperty;

  /*--------------------------------------------------------------------------*/

  // Generates strings based on the given code points.
  // Based on https://mths.be/fromcodepoint v0.2.0 by @mathias.
  var stringFromCharCode = String.fromCharCode;
  var floor = Math.floor;
  function fromCodePoint() {
    var MAX_SIZE = 0x4000;
    var codeUnits = [];
    var highSurrogate;
    var lowSurrogate;
    var index = -1;
    var length = arguments.length;
    if (!length) {
      return '';
    }
    var result = '';
    while (++index < length) {
      var codePoint = Number(arguments[index]);
      if (
        !isFinite(codePoint) || // `NaN`, `+Infinity`, or `-Infinity`
        codePoint < 0 || // not a valid Unicode code point
        codePoint > 0x10FFFF || // not a valid Unicode code point
        floor(codePoint) != codePoint // not an integer
      ) {
        throw RangeError('Invalid code point: ' + codePoint);
      }
      if (codePoint <= 0xFFFF) {
        // BMP code point
        codeUnits.push(codePoint);
      } else {
        // Astral code point; split in surrogate halves
        // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
        codePoint -= 0x10000;
        highSurrogate = (codePoint >> 10) + 0xD800;
        lowSurrogate = (codePoint % 0x400) + 0xDC00;
        codeUnits.push(highSurrogate, lowSurrogate);
      }
      if (index + 1 == length || codeUnits.length > MAX_SIZE) {
        result += stringFromCharCode.apply(null, codeUnits);
        codeUnits.length = 0;
      }
    }
    return result;
  }

  /*--------------------------------------------------------------------------*/

  // Ensures that nodes have the correct types.
  var assertTypeRegexMap = {};
  function assertType(type, expected) {
    if (expected.indexOf('|') == -1) {
      if (type == expected) {
        return;
      }

      throw Error('Invalid node type: ' + type + '; expected type: ' + expected);
    }

    expected = hasOwnProperty.call(assertTypeRegexMap, expected)
      ? assertTypeRegexMap[expected]
      : (assertTypeRegexMap[expected] = RegExp('^(?:' + expected + ')$'));

    if (expected.test(type)) {
      return;
    }

    throw Error('Invalid node type: ' + type + '; expected types: ' + expected);
  }

  /*--------------------------------------------------------------------------*/

  // Generates a regular expression string based on an AST.
  function generate(node) {
    var type = node.type;

    if (hasOwnProperty.call(generators, type)) {
      return generators[type](node);
    }

    throw Error('Invalid node type: ' + type);
  }

  /*--------------------------------------------------------------------------*/

  function generateAlternative(node) {
    assertType(node.type, 'alternative');

    var terms = node.body,
        i = -1,
        length = terms.length,
        result = '';

    while (++i < length) {
      result += generateTerm(terms[i]);
    }

    return result;
  }

  function generateAnchor(node) {
    assertType(node.type, 'anchor');

    switch (node.kind) {
      case 'start':
        return '^';
      case 'end':
        return '$';
      case 'boundary':
        return '\\b';
      case 'not-boundary':
        return '\\B';
      default:
        throw Error('Invalid assertion');
    }
  }

  function generateAtom(node) {
    assertType(node.type, 'anchor|characterClass|characterClassEscape|dot|group|reference|value');

    return generate(node);
  }

  function generateCharacterClass(node) {
    assertType(node.type, 'characterClass');

    var classRanges = node.body,
        i = -1,
        length = classRanges.length,
        result = '';

    if (node.negative) {
      result += '^';
    }

    while (++i < length) {
      result += generateClassAtom(classRanges[i]);
    }

    return '[' + result + ']';
  }

  function generateCharacterClassEscape(node) {
    assertType(node.type, 'characterClassEscape');

    return '\\' + node.value;
  }

  function generateUnicodePropertyEscape(node) {
    assertType(node.type, 'unicodePropertyEscape');

    return '\\' + (node.negative ? 'P' : 'p') + '{' + node.value + '}';
  }

  function generateCharacterClassRange(node) {
    assertType(node.type, 'characterClassRange');

    var min = node.min,
        max = node.max;

    if (min.type == 'characterClassRange' || max.type == 'characterClassRange') {
      throw Error('Invalid character class range');
    }

    return generateClassAtom(min) + '-' + generateClassAtom(max);
  }

  function generateClassAtom(node) {
    assertType(node.type, 'anchor|characterClassEscape|characterClassRange|dot|value');

    return generate(node);
  }

  function generateDisjunction(node) {
    assertType(node.type, 'disjunction');

    var body = node.body,
        i = -1,
        length = body.length,
        result = '';

    while (++i < length) {
      if (i != 0) {
        result += '|';
      }
      result += generate(body[i]);
    }

    return result;
  }

  function generateDot(node) {
    assertType(node.type, 'dot');

    return '.';
  }

  function generateGroup(node) {
    assertType(node.type, 'group');

    var result = '';

    switch (node.behavior) {
      case 'normal':
        break;
      case 'ignore':
        result += '?:';
        break;
      case 'lookahead':
        result += '?=';
        break;
      case 'negativeLookahead':
        result += '?!';
        break;
      default:
        throw Error('Invalid behaviour: ' + node.behaviour);
    }

    var body = node.body,
        i = -1,
        length = body.length;

    while (++i < length) {
      result += generate(body[i]);
    }

    return '(' + result + ')';
  }

  function generateQuantifier(node) {
    assertType(node.type, 'quantifier');

    var quantifier = '',
        min = node.min,
        max = node.max;

    if (max == null) {
      if (min == 0) {
        quantifier = '*';
      } else if (min == 1) {
        quantifier = '+';
      } else {
        quantifier = '{' + min + ',}';
      }
    } else if (min == max) {
      quantifier = '{' + min + '}';
    } else if (min == 0 && max == 1) {
      quantifier = '?';
    } else {
      quantifier = '{' + min + ',' + max + '}';
    }

    if (!node.greedy) {
      quantifier += '?';
    }

    return generateAtom(node.body[0]) + quantifier;
  }

  function generateReference(node) {
    assertType(node.type, 'reference');

    return '\\' + node.matchIndex;
  }

  function generateTerm(node) {
    assertType(node.type, 'anchor|characterClass|characterClassEscape|empty|group|quantifier|reference|unicodePropertyEscape|value');

    return generate(node);
  }

  function generateValue(node) {
    assertType(node.type, 'value');

    var kind = node.kind,
        codePoint = node.codePoint;

    switch (kind) {
      case 'controlLetter':
        return '\\c' + fromCodePoint(codePoint + 64);
      case 'hexadecimalEscape':
        return '\\x' + ('00' + codePoint.toString(16).toUpperCase()).slice(-2);
      case 'identifier':
        return '\\' + fromCodePoint(codePoint);
      case 'null':
        return '\\' + codePoint;
      case 'octal':
        return '\\' + codePoint.toString(8);
      case 'singleEscape':
        switch (codePoint) {
          case 0x0008:
            return '\\b';
          case 0x0009:
            return '\\t';
          case 0x000A:
            return '\\n';
          case 0x000B:
            return '\\v';
          case 0x000C:
            return '\\f';
          case 0x000D:
            return '\\r';
          default:
            throw Error('Invalid codepoint: ' + codePoint);
        }
      case 'symbol':
        return fromCodePoint(codePoint);
      case 'unicodeEscape':
        return '\\u' + ('0000' + codePoint.toString(16).toUpperCase()).slice(-4);
      case 'unicodeCodePointEscape':
        return '\\u{' + codePoint.toString(16).toUpperCase() + '}';
      default:
        throw Error('Unsupported node kind: ' + kind);
    }
  }

  /*--------------------------------------------------------------------------*/

  // Used to generate strings for each node type.
  var generators = {
    'alternative': generateAlternative,
    'anchor': generateAnchor,
    'characterClass': generateCharacterClass,
    'characterClassEscape': generateCharacterClassEscape,
    'characterClassRange': generateCharacterClassRange,
    'unicodePropertyEscape': generateUnicodePropertyEscape,
    'disjunction': generateDisjunction,
    'dot': generateDot,
    'group': generateGroup,
    'quantifier': generateQuantifier,
    'reference': generateReference,
    'value': generateValue
  };

  /*--------------------------------------------------------------------------*/

  // Export regjsgen.
  // Some AMD build optimizers, like r.js, check for condition patterns like the following:
  if (typeof undefined == 'function' && typeof undefined.amd == 'object' && undefined.amd) {
    // Define as an anonymous module so it can be aliased through path mapping.
    undefined(function() {
      return {
        'generate': generate
      };
    });
  }
  // Check for `exports` after `define` in case a build optimizer adds an `exports` object.
  else if (freeExports && freeModule) {
    // Export for CommonJS support.
    freeExports.generate = generate;
  }
  else {
    // Export to the global object.
    root.regjsgen = {
      'generate': generate
    };
  }
}.call(commonjsGlobal$1));
});

var parser = createCommonjsModule$1(function (module) {
// regjsparser
//
// ==================================================================
//
// See ECMA-262 Standard: 15.10.1
//
// NOTE: The ECMA-262 standard uses the term "Assertion" for /^/. Here the
//   term "Anchor" is used.
//
// Pattern ::
//      Disjunction
//
// Disjunction ::
//      Alternative
//      Alternative | Disjunction
//
// Alternative ::
//      [empty]
//      Alternative Term
//
// Term ::
//      Anchor
//      Atom
//      Atom Quantifier
//
// Anchor ::
//      ^
//      $
//      \ b
//      \ B
//      ( ? = Disjunction )
//      ( ? ! Disjunction )
//
// Quantifier ::
//      QuantifierPrefix
//      QuantifierPrefix ?
//
// QuantifierPrefix ::
//      *
//      +
//      ?
//      { DecimalDigits }
//      { DecimalDigits , }
//      { DecimalDigits , DecimalDigits }
//
// Atom ::
//      PatternCharacter
//      .
//      \ AtomEscape
//      CharacterClass
//      ( Disjunction )
//      ( ? : Disjunction )
//
// PatternCharacter ::
//      SourceCharacter but not any of: ^ $ \ . * + ? ( ) [ ] { } |
//
// AtomEscape ::
//      DecimalEscape
//      CharacterEscape
//      CharacterClassEscape
//
// CharacterEscape[U] ::
//      ControlEscape
//      c ControlLetter
//      HexEscapeSequence
//      RegExpUnicodeEscapeSequence[?U] (ES6)
//      IdentityEscape[?U]
//
// ControlEscape ::
//      one of f n r t v
// ControlLetter ::
//      one of
//          a b c d e f g h i j k l m n o p q r s t u v w x y z
//          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
//
// IdentityEscape ::
//      SourceCharacter but not IdentifierPart
//      <ZWJ>
//      <ZWNJ>
//
// DecimalEscape ::
//      DecimalIntegerLiteral [lookahead ∉ DecimalDigit]
//
// CharacterClassEscape ::
//      one of d D s S w W
//
// CharacterClass ::
//      [ [lookahead ∉ {^}] ClassRanges ]
//      [ ^ ClassRanges ]
//
// ClassRanges ::
//      [empty]
//      NonemptyClassRanges
//
// NonemptyClassRanges ::
//      ClassAtom
//      ClassAtom NonemptyClassRangesNoDash
//      ClassAtom - ClassAtom ClassRanges
//
// NonemptyClassRangesNoDash ::
//      ClassAtom
//      ClassAtomNoDash NonemptyClassRangesNoDash
//      ClassAtomNoDash - ClassAtom ClassRanges
//
// ClassAtom ::
//      -
//      ClassAtomNoDash
//
// ClassAtomNoDash ::
//      SourceCharacter but not one of \ or ] or -
//      \ ClassEscape
//
// ClassEscape ::
//      DecimalEscape
//      b
//      CharacterEscape
//      CharacterClassEscape

(function() {

  function parse(str, flags, features) {
    if (!features) {
      features = {};
    }
    function addRaw(node) {
      node.raw = str.substring(node.range[0], node.range[1]);
      return node;
    }

    function updateRawStart(node, start) {
      node.range[0] = start;
      return addRaw(node);
    }

    function createAnchor(kind, rawLength) {
      return addRaw({
        type: 'anchor',
        kind: kind,
        range: [
          pos - rawLength,
          pos
        ]
      });
    }

    function createValue(kind, codePoint, from, to) {
      return addRaw({
        type: 'value',
        kind: kind,
        codePoint: codePoint,
        range: [from, to]
      });
    }

    function createEscaped(kind, codePoint, value, fromOffset) {
      fromOffset = fromOffset || 0;
      return createValue(kind, codePoint, pos - (value.length + fromOffset), pos);
    }

    function createCharacter(matches) {
      var _char = matches[0];
      var first = _char.charCodeAt(0);
      if (hasUnicodeFlag) {
        var second;
        if (_char.length === 1 && first >= 0xD800 && first <= 0xDBFF) {
          second = lookahead().charCodeAt(0);
          if (second >= 0xDC00 && second <= 0xDFFF) {
            // Unicode surrogate pair
            pos++;
            return createValue(
                'symbol',
                (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000,
                pos - 2, pos);
          }
        }
      }
      return createValue('symbol', first, pos - 1, pos);
    }

    function createDisjunction(alternatives, from, to) {
      return addRaw({
        type: 'disjunction',
        body: alternatives,
        range: [
          from,
          to
        ]
      });
    }

    function createDot() {
      return addRaw({
        type: 'dot',
        range: [
          pos - 1,
          pos
        ]
      });
    }

    function createCharacterClassEscape(value) {
      return addRaw({
        type: 'characterClassEscape',
        value: value,
        range: [
          pos - 2,
          pos
        ]
      });
    }

    function createReference(matchIndex) {
      return addRaw({
        type: 'reference',
        matchIndex: parseInt(matchIndex, 10),
        range: [
          pos - 1 - matchIndex.length,
          pos
        ]
      });
    }

    function createGroup(behavior, disjunction, from, to) {
      return addRaw({
        type: 'group',
        behavior: behavior,
        body: disjunction,
        range: [
          from,
          to
        ]
      });
    }

    function createQuantifier(min, max, from, to) {
      if (to == null) {
        from = pos - 1;
        to = pos;
      }

      return addRaw({
        type: 'quantifier',
        min: min,
        max: max,
        greedy: true,
        body: null, // set later on
        range: [
          from,
          to
        ]
      });
    }

    function createAlternative(terms, from, to) {
      return addRaw({
        type: 'alternative',
        body: terms,
        range: [
          from,
          to
        ]
      });
    }

    function createCharacterClass(classRanges, negative, from, to) {
      return addRaw({
        type: 'characterClass',
        body: classRanges,
        negative: negative,
        range: [
          from,
          to
        ]
      });
    }

    function createClassRange(min, max, from, to) {
      // See 15.10.2.15:
      if (min.codePoint > max.codePoint) {
        bail('invalid range in character class', min.raw + '-' + max.raw, from, to);
      }

      return addRaw({
        type: 'characterClassRange',
        min: min,
        max: max,
        range: [
          from,
          to
        ]
      });
    }

    function flattenBody(body) {
      if (body.type === 'alternative') {
        return body.body;
      } else {
        return [body];
      }
    }

    function incr(amount) {
      amount = (amount || 1);
      var res = str.substring(pos, pos + amount);
      pos += (amount || 1);
      return res;
    }

    function skip(value) {
      if (!match(value)) {
        bail('character', value);
      }
    }

    function match(value) {
      if (str.indexOf(value, pos) === pos) {
        return incr(value.length);
      }
    }

    function lookahead() {
      return str[pos];
    }

    function current(value) {
      return str.indexOf(value, pos) === pos;
    }

    function next(value) {
      return str[pos + 1] === value;
    }

    function matchReg(regExp) {
      var subStr = str.substring(pos);
      var res = subStr.match(regExp);
      if (res) {
        res.range = [];
        res.range[0] = pos;
        incr(res[0].length);
        res.range[1] = pos;
      }
      return res;
    }

    function parseDisjunction() {
      // Disjunction ::
      //      Alternative
      //      Alternative | Disjunction
      var res = [], from = pos;
      res.push(parseAlternative());

      while (match('|')) {
        res.push(parseAlternative());
      }

      if (res.length === 1) {
        return res[0];
      }

      return createDisjunction(res, from, pos);
    }

    function parseAlternative() {
      var res = [], from = pos;
      var term;

      // Alternative ::
      //      [empty]
      //      Alternative Term
      while (term = parseTerm()) {
        res.push(term);
      }

      if (res.length === 1) {
        return res[0];
      }

      return createAlternative(res, from, pos);
    }

    function parseTerm() {
      // Term ::
      //      Anchor
      //      Atom
      //      Atom Quantifier

      if (pos >= str.length || current('|') || current(')')) {
        return null; /* Means: The term is empty */
      }

      var anchor = parseAnchor();

      if (anchor) {
        return anchor;
      }

      var atom = parseAtom();
      if (!atom) {
        bail('Expected atom');
      }
      var quantifier = parseQuantifier() || false;
      if (quantifier) {
        quantifier.body = flattenBody(atom);
        // The quantifier contains the atom. Therefore, the beginning of the
        // quantifier range is given by the beginning of the atom.
        updateRawStart(quantifier, atom.range[0]);
        return quantifier;
      }
      return atom;
    }

    function parseGroup(matchA, typeA, matchB, typeB) {
      var type = null, from = pos;

      if (match(matchA)) {
        type = typeA;
      } else if (match(matchB)) {
        type = typeB;
      } else {
        return false;
      }

      var body = parseDisjunction();
      if (!body) {
        bail('Expected disjunction');
      }
      skip(')');
      var group = createGroup(type, flattenBody(body), from, pos);

      if (type == 'normal') {
        // Keep track of the number of closed groups. This is required for
        // parseDecimalEscape(). In case the string is parsed a second time the
        // value already holds the total count and no incrementation is required.
        if (firstIteration) {
          closedCaptureCounter++;
        }
      }
      return group;
    }

    function parseAnchor() {
      // Anchor ::
      //      ^
      //      $
      //      \ b
      //      \ B
      //      ( ? = Disjunction )
      //      ( ? ! Disjunction )
      if (match('^')) {
        return createAnchor('start', 1 /* rawLength */);
      } else if (match('$')) {
        return createAnchor('end', 1 /* rawLength */);
      } else if (match('\\b')) {
        return createAnchor('boundary', 2 /* rawLength */);
      } else if (match('\\B')) {
        return createAnchor('not-boundary', 2 /* rawLength */);
      } else {
        return parseGroup('(?=', 'lookahead', '(?!', 'negativeLookahead');
      }
    }

    function parseQuantifier() {
      // Quantifier ::
      //      QuantifierPrefix
      //      QuantifierPrefix ?
      //
      // QuantifierPrefix ::
      //      *
      //      +
      //      ?
      //      { DecimalDigits }
      //      { DecimalDigits , }
      //      { DecimalDigits , DecimalDigits }

      var res, from = pos;
      var quantifier;
      var min, max;

      if (match('*')) {
        quantifier = createQuantifier(0);
      }
      else if (match('+')) {
        quantifier = createQuantifier(1);
      }
      else if (match('?')) {
        quantifier = createQuantifier(0, 1);
      }
      else if (res = matchReg(/^\{([0-9]+)\}/)) {
        min = parseInt(res[1], 10);
        quantifier = createQuantifier(min, min, res.range[0], res.range[1]);
      }
      else if (res = matchReg(/^\{([0-9]+),\}/)) {
        min = parseInt(res[1], 10);
        quantifier = createQuantifier(min, undefined, res.range[0], res.range[1]);
      }
      else if (res = matchReg(/^\{([0-9]+),([0-9]+)\}/)) {
        min = parseInt(res[1], 10);
        max = parseInt(res[2], 10);
        if (min > max) {
          bail('numbers out of order in {} quantifier', '', from, pos);
        }
        quantifier = createQuantifier(min, max, res.range[0], res.range[1]);
      }

      if (quantifier) {
        if (match('?')) {
          quantifier.greedy = false;
          quantifier.range[1] += 1;
        }
      }

      return quantifier;
    }

    function parseAtom() {
      // Atom ::
      //      PatternCharacter
      //      .
      //      \ AtomEscape
      //      CharacterClass
      //      ( Disjunction )
      //      ( ? : Disjunction )

      var res;

      // jviereck: allow ']', '}' here as well to be compatible with browser's
      //   implementations: ']'.match(/]/);
      // if (res = matchReg(/^[^^$\\.*+?()[\]{}|]/)) {
      if (res = matchReg(/^[^^$\\.*+?(){[|]/)) {
        //      PatternCharacter
        return createCharacter(res);
      }
      else if (match('.')) {
        //      .
        return createDot();
      }
      else if (match('\\')) {
        //      \ AtomEscape
        res = parseAtomEscape();
        if (!res) {
          bail('atomEscape');
        }
        return res;
      }
      else if (res = parseCharacterClass()) {
        return res;
      }
      else {
        //      ( Disjunction )
        //      ( ? : Disjunction )
        return parseGroup('(?:', 'ignore', '(', 'normal');
      }
    }

    function parseUnicodeSurrogatePairEscape(firstEscape) {
      if (hasUnicodeFlag) {
        var first, second;
        if (firstEscape.kind == 'unicodeEscape' &&
          (first = firstEscape.codePoint) >= 0xD800 && first <= 0xDBFF &&
          current('\\') && next('u') ) {
          var prevPos = pos;
          pos++;
          var secondEscape = parseClassEscape();
          if (secondEscape.kind == 'unicodeEscape' &&
            (second = secondEscape.codePoint) >= 0xDC00 && second <= 0xDFFF) {
            // Unicode surrogate pair
            firstEscape.range[1] = secondEscape.range[1];
            firstEscape.codePoint = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
            firstEscape.type = 'value';
            firstEscape.kind = 'unicodeCodePointEscape';
            addRaw(firstEscape);
          }
          else {
            pos = prevPos;
          }
        }
      }
      return firstEscape;
    }

    function parseClassEscape() {
      return parseAtomEscape(true);
    }

    function parseAtomEscape(insideCharacterClass) {
      // AtomEscape ::
      //      DecimalEscape
      //      CharacterEscape
      //      CharacterClassEscape

      var res, from = pos;

      res = parseDecimalEscape();
      if (res) {
        return res;
      }

      // For ClassEscape
      if (insideCharacterClass) {
        if (match('b')) {
          // 15.10.2.19
          // The production ClassEscape :: b evaluates by returning the
          // CharSet containing the one character <BS> (Unicode value 0008).
          return createEscaped('singleEscape', 0x0008, '\\b');
        } else if (match('B')) {
          bail('\\B not possible inside of CharacterClass', '', from);
        }
      }

      res = parseCharacterEscape();

      return res;
    }


    function parseDecimalEscape() {
      // DecimalEscape ::
      //      DecimalIntegerLiteral [lookahead ∉ DecimalDigit]
      //      CharacterClassEscape :: one of d D s S w W

      var res, match;

      if (res = matchReg(/^(?!0)\d+/)) {
        match = res[0];
        var refIdx = parseInt(res[0], 10);
        if (refIdx <= closedCaptureCounter) {
          // If the number is smaller than the normal-groups found so
          // far, then it is a reference...
          return createReference(res[0]);
        } else {
          // ... otherwise it needs to be interpreted as a octal (if the
          // number is in an octal format). If it is NOT octal format,
          // then the slash is ignored and the number is matched later
          // as normal characters.

          // Recall the negative decision to decide if the input must be parsed
          // a second time with the total normal-groups.
          backrefDenied.push(refIdx);

          // Reset the position again, as maybe only parts of the previous
          // matched numbers are actual octal numbers. E.g. in '019' only
          // the '01' should be matched.
          incr(-res[0].length);
          if (res = matchReg(/^[0-7]{1,3}/)) {
            return createEscaped('octal', parseInt(res[0], 8), res[0], 1);
          } else {
            // If we end up here, we have a case like /\91/. Then the
            // first slash is to be ignored and the 9 & 1 to be treated
            // like ordinary characters. Create a character for the
            // first number only here - other number-characters
            // (if available) will be matched later.
            res = createCharacter(matchReg(/^[89]/));
            return updateRawStart(res, res.range[0] - 1);
          }
        }
      }
      // Only allow octal numbers in the following. All matched numbers start
      // with a zero (if the do not, the previous if-branch is executed).
      // If the number is not octal format and starts with zero (e.g. `091`)
      // then only the zeros `0` is treated here and the `91` are ordinary
      // characters.
      // Example:
      //   /\091/.exec('\091')[0].length === 3
      else if (res = matchReg(/^[0-7]{1,3}/)) {
        match = res[0];
        if (/^0{1,3}$/.test(match)) {
          // If they are all zeros, then only take the first one.
          return createEscaped('null', 0x0000, '0', match.length + 1);
        } else {
          return createEscaped('octal', parseInt(match, 8), match, 1);
        }
      } else if (res = matchReg(/^[dDsSwW]/)) {
        return createCharacterClassEscape(res[0]);
      }
      return false;
    }

    function parseCharacterEscape() {
      // CharacterEscape ::
      //      ControlEscape
      //      c ControlLetter
      //      HexEscapeSequence
      //      UnicodeEscapeSequence
      //      IdentityEscape

      var res;
      if (res = matchReg(/^[fnrtv]/)) {
        // ControlEscape
        var codePoint = 0;
        switch (res[0]) {
          case 't': codePoint = 0x009; break;
          case 'n': codePoint = 0x00A; break;
          case 'v': codePoint = 0x00B; break;
          case 'f': codePoint = 0x00C; break;
          case 'r': codePoint = 0x00D; break;
        }
        return createEscaped('singleEscape', codePoint, '\\' + res[0]);
      } else if (res = matchReg(/^c([a-zA-Z])/)) {
        // c ControlLetter
        return createEscaped('controlLetter', res[1].charCodeAt(0) % 32, res[1], 2);
      } else if (res = matchReg(/^x([0-9a-fA-F]{2})/)) {
        // HexEscapeSequence
        return createEscaped('hexadecimalEscape', parseInt(res[1], 16), res[1], 2);
      } else if (res = matchReg(/^u([0-9a-fA-F]{4})/)) {
        // UnicodeEscapeSequence
        return parseUnicodeSurrogatePairEscape(
          createEscaped('unicodeEscape', parseInt(res[1], 16), res[1], 2)
        );
      } else if (hasUnicodeFlag && (res = matchReg(/^u\{([0-9a-fA-F]+)\}/))) {
        // RegExpUnicodeEscapeSequence (ES6 Unicode code point escape)
        return createEscaped('unicodeCodePointEscape', parseInt(res[1], 16), res[1], 4);
      } else if (features.unicodePropertyEscape && hasUnicodeFlag && (res = matchReg(/^([pP])\{([^\}]+)\}/))) {
        // https://github.com/jviereck/regjsparser/issues/77
        return addRaw({
          type: 'unicodePropertyEscape',
          negative: res[1] === 'P',
          value: res[2],
          range: [res.range[0] - 1, res.range[1]],
          raw: res[0]
        });
      } else {
        // IdentityEscape
        return parseIdentityEscape();
      }
    }

    // Taken from the Esprima parser.
    function isIdentifierPart(ch) {
      // Generated by `tools/generate-identifier-regex.js`.
      var NonAsciiIdentifierPart = new RegExp('[\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0300-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u0483-\u0487\u048A-\u052F\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05BD\u05BF\u05C1\u05C2\u05C4\u05C5\u05C7\u05D0-\u05EA\u05F0-\u05F2\u0610-\u061A\u0620-\u0669\u066E-\u06D3\u06D5-\u06DC\u06DF-\u06E8\u06EA-\u06FC\u06FF\u0710-\u074A\u074D-\u07B1\u07C0-\u07F5\u07FA\u0800-\u082D\u0840-\u085B\u08A0-\u08B2\u08E4-\u0963\u0966-\u096F\u0971-\u0983\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BC-\u09C4\u09C7\u09C8\u09CB-\u09CE\u09D7\u09DC\u09DD\u09DF-\u09E3\u09E6-\u09F1\u0A01-\u0A03\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A3C\u0A3E-\u0A42\u0A47\u0A48\u0A4B-\u0A4D\u0A51\u0A59-\u0A5C\u0A5E\u0A66-\u0A75\u0A81-\u0A83\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABC-\u0AC5\u0AC7-\u0AC9\u0ACB-\u0ACD\u0AD0\u0AE0-\u0AE3\u0AE6-\u0AEF\u0B01-\u0B03\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3C-\u0B44\u0B47\u0B48\u0B4B-\u0B4D\u0B56\u0B57\u0B5C\u0B5D\u0B5F-\u0B63\u0B66-\u0B6F\u0B71\u0B82\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BBE-\u0BC2\u0BC6-\u0BC8\u0BCA-\u0BCD\u0BD0\u0BD7\u0BE6-\u0BEF\u0C00-\u0C03\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D-\u0C44\u0C46-\u0C48\u0C4A-\u0C4D\u0C55\u0C56\u0C58\u0C59\u0C60-\u0C63\u0C66-\u0C6F\u0C81-\u0C83\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBC-\u0CC4\u0CC6-\u0CC8\u0CCA-\u0CCD\u0CD5\u0CD6\u0CDE\u0CE0-\u0CE3\u0CE6-\u0CEF\u0CF1\u0CF2\u0D01-\u0D03\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D-\u0D44\u0D46-\u0D48\u0D4A-\u0D4E\u0D57\u0D60-\u0D63\u0D66-\u0D6F\u0D7A-\u0D7F\u0D82\u0D83\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0DCA\u0DCF-\u0DD4\u0DD6\u0DD8-\u0DDF\u0DE6-\u0DEF\u0DF2\u0DF3\u0E01-\u0E3A\u0E40-\u0E4E\u0E50-\u0E59\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB9\u0EBB-\u0EBD\u0EC0-\u0EC4\u0EC6\u0EC8-\u0ECD\u0ED0-\u0ED9\u0EDC-\u0EDF\u0F00\u0F18\u0F19\u0F20-\u0F29\u0F35\u0F37\u0F39\u0F3E-\u0F47\u0F49-\u0F6C\u0F71-\u0F84\u0F86-\u0F97\u0F99-\u0FBC\u0FC6\u1000-\u1049\u1050-\u109D\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u135D-\u135F\u1380-\u138F\u13A0-\u13F4\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16EE-\u16F8\u1700-\u170C\u170E-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176C\u176E-\u1770\u1772\u1773\u1780-\u17D3\u17D7\u17DC\u17DD\u17E0-\u17E9\u180B-\u180D\u1810-\u1819\u1820-\u1877\u1880-\u18AA\u18B0-\u18F5\u1900-\u191E\u1920-\u192B\u1930-\u193B\u1946-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u19D0-\u19D9\u1A00-\u1A1B\u1A20-\u1A5E\u1A60-\u1A7C\u1A7F-\u1A89\u1A90-\u1A99\u1AA7\u1AB0-\u1ABD\u1B00-\u1B4B\u1B50-\u1B59\u1B6B-\u1B73\u1B80-\u1BF3\u1C00-\u1C37\u1C40-\u1C49\u1C4D-\u1C7D\u1CD0-\u1CD2\u1CD4-\u1CF6\u1CF8\u1CF9\u1D00-\u1DF5\u1DFC-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u200C\u200D\u203F\u2040\u2054\u2071\u207F\u2090-\u209C\u20D0-\u20DC\u20E1\u20E5-\u20F0\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2160-\u2188\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D7F-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2DE0-\u2DFF\u2E2F\u3005-\u3007\u3021-\u302F\u3031-\u3035\u3038-\u303C\u3041-\u3096\u3099\u309A\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312D\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FCC\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA66F\uA674-\uA67D\uA67F-\uA69D\uA69F-\uA6F1\uA717-\uA71F\uA722-\uA788\uA78B-\uA78E\uA790-\uA7AD\uA7B0\uA7B1\uA7F7-\uA827\uA840-\uA873\uA880-\uA8C4\uA8D0-\uA8D9\uA8E0-\uA8F7\uA8FB\uA900-\uA92D\uA930-\uA953\uA960-\uA97C\uA980-\uA9C0\uA9CF-\uA9D9\uA9E0-\uA9FE\uAA00-\uAA36\uAA40-\uAA4D\uAA50-\uAA59\uAA60-\uAA76\uAA7A-\uAAC2\uAADB-\uAADD\uAAE0-\uAAEF\uAAF2-\uAAF6\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB5F\uAB64\uAB65\uABC0-\uABEA\uABEC\uABED\uABF0-\uABF9\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE00-\uFE0F\uFE20-\uFE2D\uFE33\uFE34\uFE4D-\uFE4F\uFE70-\uFE74\uFE76-\uFEFC\uFF10-\uFF19\uFF21-\uFF3A\uFF3F\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]');

      return (ch === 36) || (ch === 95) ||  // $ (dollar) and _ (underscore)
        (ch >= 65 && ch <= 90) ||         // A..Z
        (ch >= 97 && ch <= 122) ||        // a..z
        (ch >= 48 && ch <= 57) ||         // 0..9
        (ch === 92) ||                    // \ (backslash)
        ((ch >= 0x80) && NonAsciiIdentifierPart.test(String.fromCharCode(ch)));
    }

    function parseIdentityEscape() {
      // IdentityEscape ::
      //      SourceCharacter but not IdentifierPart
      //      <ZWJ>
      //      <ZWNJ>

      var ZWJ = '\u200C';
      var ZWNJ = '\u200D';

      var tmp;

      if (!isIdentifierPart(lookahead())) {
        tmp = incr();
        return createEscaped('identifier', tmp.charCodeAt(0), tmp, 1);
      }

      if (match(ZWJ)) {
        // <ZWJ>
        return createEscaped('identifier', 0x200C, ZWJ);
      } else if (match(ZWNJ)) {
        // <ZWNJ>
        return createEscaped('identifier', 0x200D, ZWNJ);
      }

      return null;
    }

    function parseCharacterClass() {
      // CharacterClass ::
      //      [ [lookahead ∉ {^}] ClassRanges ]
      //      [ ^ ClassRanges ]

      var res, from = pos;
      if (res = matchReg(/^\[\^/)) {
        res = parseClassRanges();
        skip(']');
        return createCharacterClass(res, true, from, pos);
      } else if (match('[')) {
        res = parseClassRanges();
        skip(']');
        return createCharacterClass(res, false, from, pos);
      }

      return null;
    }

    function parseClassRanges() {
      // ClassRanges ::
      //      [empty]
      //      NonemptyClassRanges

      var res;
      if (current(']')) {
        // Empty array means nothing insinde of the ClassRange.
        return [];
      } else {
        res = parseNonemptyClassRanges();
        if (!res) {
          bail('nonEmptyClassRanges');
        }
        return res;
      }
    }

    function parseHelperClassRanges(atom) {
      var from, to, res;
      if (current('-') && !next(']')) {
        // ClassAtom - ClassAtom ClassRanges
        skip('-');

        res = parseClassAtom();
        if (!res) {
          bail('classAtom');
        }
        to = pos;
        var classRanges = parseClassRanges();
        if (!classRanges) {
          bail('classRanges');
        }
        from = atom.range[0];
        if (classRanges.type === 'empty') {
          return [createClassRange(atom, res, from, to)];
        }
        return [createClassRange(atom, res, from, to)].concat(classRanges);
      }

      res = parseNonemptyClassRangesNoDash();
      if (!res) {
        bail('nonEmptyClassRangesNoDash');
      }

      return [atom].concat(res);
    }

    function parseNonemptyClassRanges() {
      // NonemptyClassRanges ::
      //      ClassAtom
      //      ClassAtom NonemptyClassRangesNoDash
      //      ClassAtom - ClassAtom ClassRanges

      var atom = parseClassAtom();
      if (!atom) {
        bail('classAtom');
      }

      if (current(']')) {
        // ClassAtom
        return [atom];
      }

      // ClassAtom NonemptyClassRangesNoDash
      // ClassAtom - ClassAtom ClassRanges
      return parseHelperClassRanges(atom);
    }

    function parseNonemptyClassRangesNoDash() {
      // NonemptyClassRangesNoDash ::
      //      ClassAtom
      //      ClassAtomNoDash NonemptyClassRangesNoDash
      //      ClassAtomNoDash - ClassAtom ClassRanges

      var res = parseClassAtom();
      if (!res) {
        bail('classAtom');
      }
      if (current(']')) {
        //      ClassAtom
        return res;
      }

      // ClassAtomNoDash NonemptyClassRangesNoDash
      // ClassAtomNoDash - ClassAtom ClassRanges
      return parseHelperClassRanges(res);
    }

    function parseClassAtom() {
      // ClassAtom ::
      //      -
      //      ClassAtomNoDash
      if (match('-')) {
        return createCharacter('-');
      } else {
        return parseClassAtomNoDash();
      }
    }

    function parseClassAtomNoDash() {
      // ClassAtomNoDash ::
      //      SourceCharacter but not one of \ or ] or -
      //      \ ClassEscape

      var res;
      if (res = matchReg(/^[^\\\]-]/)) {
        return createCharacter(res[0]);
      } else if (match('\\')) {
        res = parseClassEscape();
        if (!res) {
          bail('classEscape');
        }

        return parseUnicodeSurrogatePairEscape(res);
      }
    }

    function bail(message, details, from, to) {
      from = from == null ? pos : from;
      to = to == null ? from : to;

      var contextStart = Math.max(0, from - 10);
      var contextEnd = Math.min(to + 10, str.length);

      // Output a bit of context and a line pointing to where our error is.
      //
      // We are assuming that there are no actual newlines in the content as this is a regular expression.
      var context = '    ' + str.substring(contextStart, contextEnd);
      var pointer = '    ' + new Array(from - contextStart + 1).join(' ') + '^';

      throw SyntaxError(message + ' at position ' + from + (details ? ': ' + details : '') + '\n' + context + '\n' + pointer);
    }

    var backrefDenied = [];
    var closedCaptureCounter = 0;
    var firstIteration = true;
    var hasUnicodeFlag = (flags || "").indexOf("u") !== -1;
    var pos = 0;

    // Convert the input to a string and treat the empty string special.
    str = String(str);
    if (str === '') {
      str = '(?:)';
    }

    var result = parseDisjunction();

    if (result.range[1] !== str.length) {
      bail('Could not parse entire input - got stuck', '', result.range[1]);
    }

    // The spec requires to interpret the `\2` in `/\2()()/` as backreference.
    // As the parser collects the number of capture groups as the string is
    // parsed it is impossible to make these decisions at the point when the
    // `\2` is handled. In case the local decision turns out to be wrong after
    // the parsing has finished, the input string is parsed a second time with
    // the total number of capture groups set.
    //
    // SEE: https://github.com/jviereck/regjsparser/issues/70
    for (var i = 0; i < backrefDenied.length; i++) {
      if (backrefDenied[i] <= closedCaptureCounter) {
        // Parse the input a second time.
        pos = 0;
        firstIteration = false;
        return parseDisjunction();
      }
    }

    return result;
  }

  var regjsparser = {
    parse: parse
  };

  if ('object' !== 'undefined' && module.exports) {
    module.exports = regjsparser;
  } else {
    window.regjsparser = regjsparser;
  }

}());
});

var regenerate = createCommonjsModule$1(function (module, exports) {
/*! https://mths.be/regenerate v1.3.3 by @mathias | MIT license */
(function(root) {

	// Detect free variables `exports`.
	var freeExports = 'object' == 'object' && exports;

	// Detect free variable `module`.
	var freeModule = 'object' == 'object' && module &&
		module.exports == freeExports && module;

	// Detect free variable `global`, from Node.js/io.js or Browserified code,
	// and use it as `root`.
	var freeGlobal = typeof commonjsGlobal$1 == 'object' && commonjsGlobal$1;
	if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
		root = freeGlobal;
	}

	/*--------------------------------------------------------------------------*/

	var ERRORS = {
		'rangeOrder': 'A range\u2019s `stop` value must be greater than or equal ' +
			'to the `start` value.',
		'codePointRange': 'Invalid code point value. Code points range from ' +
			'U+000000 to U+10FFFF.'
	};

	// https://mathiasbynens.be/notes/javascript-encoding#surrogate-pairs
	var HIGH_SURROGATE_MIN = 0xD800;
	var HIGH_SURROGATE_MAX = 0xDBFF;
	var LOW_SURROGATE_MIN = 0xDC00;
	var LOW_SURROGATE_MAX = 0xDFFF;

	// In Regenerate output, `\0` is never preceded by `\` because we sort by
	// code point value, so let’s keep this regular expression simple.
	var regexNull = /\\x00([^0123456789]|$)/g;

	var object = {};
	var hasOwnProperty = object.hasOwnProperty;
	var extend = function(destination, source) {
		var key;
		for (key in source) {
			if (hasOwnProperty.call(source, key)) {
				destination[key] = source[key];
			}
		}
		return destination;
	};

	var forEach = function(array, callback) {
		var index = -1;
		var length = array.length;
		while (++index < length) {
			callback(array[index], index);
		}
	};

	var toString = object.toString;
	var isArray = function(value) {
		return toString.call(value) == '[object Array]';
	};
	var isNumber = function(value) {
		return typeof value == 'number' ||
			toString.call(value) == '[object Number]';
	};

	// This assumes that `number` is a positive integer that `toString()`s nicely
	// (which is the case for all code point values).
	var zeroes = '0000';
	var pad = function(number, totalCharacters) {
		var string = String(number);
		return string.length < totalCharacters
			? (zeroes + string).slice(-totalCharacters)
			: string;
	};

	var hex = function(number) {
		return Number(number).toString(16).toUpperCase();
	};

	var slice = [].slice;

	/*--------------------------------------------------------------------------*/

	var dataFromCodePoints = function(codePoints) {
		var index = -1;
		var length = codePoints.length;
		var max = length - 1;
		var result = [];
		var isStart = true;
		var tmp;
		var previous = 0;
		while (++index < length) {
			tmp = codePoints[index];
			if (isStart) {
				result.push(tmp);
				previous = tmp;
				isStart = false;
			} else {
				if (tmp == previous + 1) {
					if (index != max) {
						previous = tmp;
						continue;
					} else {
						isStart = true;
						result.push(tmp + 1);
					}
				} else {
					// End the previous range and start a new one.
					result.push(previous + 1, tmp);
					previous = tmp;
				}
			}
		}
		if (!isStart) {
			result.push(tmp + 1);
		}
		return result;
	};

	var dataRemove = function(data, codePoint) {
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var length = data.length;
		while (index < length) {
			start = data[index];
			end = data[index + 1];
			if (codePoint >= start && codePoint < end) {
				// Modify this pair.
				if (codePoint == start) {
					if (end == start + 1) {
						// Just remove `start` and `end`.
						data.splice(index, 2);
						return data;
					} else {
						// Just replace `start` with a new value.
						data[index] = codePoint + 1;
						return data;
					}
				} else if (codePoint == end - 1) {
					// Just replace `end` with a new value.
					data[index + 1] = codePoint;
					return data;
				} else {
					// Replace `[start, end]` with `[startA, endA, startB, endB]`.
					data.splice(index, 2, start, codePoint, codePoint + 1, end);
					return data;
				}
			}
			index += 2;
		}
		return data;
	};

	var dataRemoveRange = function(data, rangeStart, rangeEnd) {
		if (rangeEnd < rangeStart) {
			throw Error(ERRORS.rangeOrder);
		}
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		while (index < data.length) {
			start = data[index];
			end = data[index + 1] - 1; // Note: the `- 1` makes `end` inclusive.

			// Exit as soon as no more matching pairs can be found.
			if (start > rangeEnd) {
				return data;
			}

			// Check if this range pair is equal to, or forms a subset of, the range
			// to be removed.
			// E.g. we have `[0, 11, 40, 51]` and want to remove 0-10 → `[40, 51]`.
			// E.g. we have `[40, 51]` and want to remove 0-100 → `[]`.
			if (rangeStart <= start && rangeEnd >= end) {
				// Remove this pair.
				data.splice(index, 2);
				continue;
			}

			// Check if both `rangeStart` and `rangeEnd` are within the bounds of
			// this pair.
			// E.g. we have `[0, 11]` and want to remove 4-6 → `[0, 4, 7, 11]`.
			if (rangeStart >= start && rangeEnd < end) {
				if (rangeStart == start) {
					// Replace `[start, end]` with `[startB, endB]`.
					data[index] = rangeEnd + 1;
					data[index + 1] = end + 1;
					return data;
				}
				// Replace `[start, end]` with `[startA, endA, startB, endB]`.
				data.splice(index, 2, start, rangeStart, rangeEnd + 1, end + 1);
				return data;
			}

			// Check if only `rangeStart` is within the bounds of this pair.
			// E.g. we have `[0, 11]` and want to remove 4-20 → `[0, 4]`.
			if (rangeStart >= start && rangeStart <= end) {
				// Replace `end` with `rangeStart`.
				data[index + 1] = rangeStart;
				// Note: we cannot `return` just yet, in case any following pairs still
				// contain matching code points.
				// E.g. we have `[0, 11, 14, 31]` and want to remove 4-20
				// → `[0, 4, 21, 31]`.
			}

			// Check if only `rangeEnd` is within the bounds of this pair.
			// E.g. we have `[14, 31]` and want to remove 4-20 → `[21, 31]`.
			else if (rangeEnd >= start && rangeEnd <= end) {
				// Just replace `start`.
				data[index] = rangeEnd + 1;
				return data;
			}

			index += 2;
		}
		return data;
	};

	 var dataAdd = function(data, codePoint) {
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var lastIndex = null;
		var length = data.length;
		if (codePoint < 0x0 || codePoint > 0x10FFFF) {
			throw RangeError(ERRORS.codePointRange);
		}
		while (index < length) {
			start = data[index];
			end = data[index + 1];

			// Check if the code point is already in the set.
			if (codePoint >= start && codePoint < end) {
				return data;
			}

			if (codePoint == start - 1) {
				// Just replace `start` with a new value.
				data[index] = codePoint;
				return data;
			}

			// At this point, if `start` is `greater` than `codePoint`, insert a new
			// `[start, end]` pair before the current pair, or after the current pair
			// if there is a known `lastIndex`.
			if (start > codePoint) {
				data.splice(
					lastIndex != null ? lastIndex + 2 : 0,
					0,
					codePoint,
					codePoint + 1
				);
				return data;
			}

			if (codePoint == end) {
				// Check if adding this code point causes two separate ranges to become
				// a single range, e.g. `dataAdd([0, 4, 5, 10], 4)` → `[0, 10]`.
				if (codePoint + 1 == data[index + 2]) {
					data.splice(index, 4, start, data[index + 3]);
					return data;
				}
				// Else, just replace `end` with a new value.
				data[index + 1] = codePoint + 1;
				return data;
			}
			lastIndex = index;
			index += 2;
		}
		// The loop has finished; add the new pair to the end of the data set.
		data.push(codePoint, codePoint + 1);
		return data;
	};

	var dataAddData = function(dataA, dataB) {
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var data = dataA.slice();
		var length = dataB.length;
		while (index < length) {
			start = dataB[index];
			end = dataB[index + 1] - 1;
			if (start == end) {
				data = dataAdd(data, start);
			} else {
				data = dataAddRange(data, start, end);
			}
			index += 2;
		}
		return data;
	};

	var dataRemoveData = function(dataA, dataB) {
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var data = dataA.slice();
		var length = dataB.length;
		while (index < length) {
			start = dataB[index];
			end = dataB[index + 1] - 1;
			if (start == end) {
				data = dataRemove(data, start);
			} else {
				data = dataRemoveRange(data, start, end);
			}
			index += 2;
		}
		return data;
	};

	var dataAddRange = function(data, rangeStart, rangeEnd) {
		if (rangeEnd < rangeStart) {
			throw Error(ERRORS.rangeOrder);
		}
		if (
			rangeStart < 0x0 || rangeStart > 0x10FFFF ||
			rangeEnd < 0x0 || rangeEnd > 0x10FFFF
		) {
			throw RangeError(ERRORS.codePointRange);
		}
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var added = false;
		var length = data.length;
		while (index < length) {
			start = data[index];
			end = data[index + 1];

			if (added) {
				// The range has already been added to the set; at this point, we just
				// need to get rid of the following ranges in case they overlap.

				// Check if this range can be combined with the previous range.
				if (start == rangeEnd + 1) {
					data.splice(index - 1, 2);
					return data;
				}

				// Exit as soon as no more possibly overlapping pairs can be found.
				if (start > rangeEnd) {
					return data;
				}

				// E.g. `[0, 11, 12, 16]` and we’ve added 5-15, so we now have
				// `[0, 16, 12, 16]`. Remove the `12,16` part, as it lies within the
				// `0,16` range that was previously added.
				if (start >= rangeStart && start <= rangeEnd) {
					// `start` lies within the range that was previously added.

					if (end > rangeStart && end - 1 <= rangeEnd) {
						// `end` lies within the range that was previously added as well,
						// so remove this pair.
						data.splice(index, 2);
						index -= 2;
						// Note: we cannot `return` just yet, as there may still be other
						// overlapping pairs.
					} else {
						// `start` lies within the range that was previously added, but
						// `end` doesn’t. E.g. `[0, 11, 12, 31]` and we’ve added 5-15, so
						// now we have `[0, 16, 12, 31]`. This must be written as `[0, 31]`.
						// Remove the previously added `end` and the current `start`.
						data.splice(index - 1, 2);
						index -= 2;
					}

					// Note: we cannot return yet.
				}

			}

			else if (start == rangeEnd + 1) {
				data[index] = rangeStart;
				return data;
			}

			// Check if a new pair must be inserted *before* the current one.
			else if (start > rangeEnd) {
				data.splice(index, 0, rangeStart, rangeEnd + 1);
				return data;
			}

			else if (rangeStart >= start && rangeStart < end && rangeEnd + 1 <= end) {
				// The new range lies entirely within an existing range pair. No action
				// needed.
				return data;
			}

			else if (
				// E.g. `[0, 11]` and you add 5-15 → `[0, 16]`.
				(rangeStart >= start && rangeStart < end) ||
				// E.g. `[0, 3]` and you add 3-6 → `[0, 7]`.
				end == rangeStart
			) {
				// Replace `end` with the new value.
				data[index + 1] = rangeEnd + 1;
				// Make sure the next range pair doesn’t overlap, e.g. `[0, 11, 12, 14]`
				// and you add 5-15 → `[0, 16]`, i.e. remove the `12,14` part.
				added = true;
				// Note: we cannot `return` just yet.
			}

			else if (rangeStart <= start && rangeEnd + 1 >= end) {
				// The new range is a superset of the old range.
				data[index] = rangeStart;
				data[index + 1] = rangeEnd + 1;
				added = true;
			}

			index += 2;
		}
		// The loop has finished without doing anything; add the new pair to the end
		// of the data set.
		if (!added) {
			data.push(rangeStart, rangeEnd + 1);
		}
		return data;
	};

	var dataContains = function(data, codePoint) {
		var index = 0;
		var length = data.length;
		// Exit early if `codePoint` is not within `data`’s overall range.
		var start = data[index];
		var end = data[length - 1];
		if (length >= 2) {
			if (codePoint < start || codePoint > end) {
				return false;
			}
		}
		// Iterate over the data per `(start, end)` pair.
		while (index < length) {
			start = data[index];
			end = data[index + 1];
			if (codePoint >= start && codePoint < end) {
				return true;
			}
			index += 2;
		}
		return false;
	};

	var dataIntersection = function(data, codePoints) {
		var index = 0;
		var length = codePoints.length;
		var codePoint;
		var result = [];
		while (index < length) {
			codePoint = codePoints[index];
			if (dataContains(data, codePoint)) {
				result.push(codePoint);
			}
			++index;
		}
		return dataFromCodePoints(result);
	};

	var dataIsEmpty = function(data) {
		return !data.length;
	};

	var dataIsSingleton = function(data) {
		// Check if the set only represents a single code point.
		return data.length == 2 && data[0] + 1 == data[1];
	};

	var dataToArray = function(data) {
		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var result = [];
		var length = data.length;
		while (index < length) {
			start = data[index];
			end = data[index + 1];
			while (start < end) {
				result.push(start);
				++start;
			}
			index += 2;
		}
		return result;
	};

	/*--------------------------------------------------------------------------*/

	// https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
	var floor = Math.floor;
	var highSurrogate = function(codePoint) {
		return parseInt(
			floor((codePoint - 0x10000) / 0x400) + HIGH_SURROGATE_MIN,
			10
		);
	};

	var lowSurrogate = function(codePoint) {
		return parseInt(
			(codePoint - 0x10000) % 0x400 + LOW_SURROGATE_MIN,
			10
		);
	};

	var stringFromCharCode = String.fromCharCode;
	var codePointToString = function(codePoint) {
		var string;
		// https://mathiasbynens.be/notes/javascript-escapes#single
		// Note: the `\b` escape sequence for U+0008 BACKSPACE in strings has a
		// different meaning in regular expressions (word boundary), so it cannot
		// be used here.
		if (codePoint == 0x09) {
			string = '\\t';
		}
		// Note: IE < 9 treats `'\v'` as `'v'`, so avoid using it.
		// else if (codePoint == 0x0B) {
		// 	string = '\\v';
		// }
		else if (codePoint == 0x0A) {
			string = '\\n';
		}
		else if (codePoint == 0x0C) {
			string = '\\f';
		}
		else if (codePoint == 0x0D) {
			string = '\\r';
		}
		else if (codePoint == 0x5C) {
			string = '\\\\';
		}
		else if (
			codePoint == 0x24 ||
			(codePoint >= 0x28 && codePoint <= 0x2B) ||
			(codePoint >= 0x2D && codePoint <= 0x2F) ||
			codePoint == 0x3F ||
			(codePoint >= 0x5B && codePoint <= 0x5E) ||
			(codePoint >= 0x7B && codePoint <= 0x7D)
		) {
			// The code point maps to an unsafe printable ASCII character;
			// backslash-escape it. Here’s the list of those symbols:
			//
			//     $()*+-./?[\]^{|}
			//
			// See #7 for more info.
			string = '\\' + stringFromCharCode(codePoint);
		}
		else if (codePoint >= 0x20 && codePoint <= 0x7E) {
			// The code point maps to one of these printable ASCII symbols
			// (including the space character):
			//
			//      !"#%&',/0123456789:;<=>@ABCDEFGHIJKLMNO
			//     PQRSTUVWXYZ_`abcdefghijklmnopqrstuvwxyz~
			//
			// These can safely be used directly.
			string = stringFromCharCode(codePoint);
		}
		else if (codePoint <= 0xFF) {
			// https://mathiasbynens.be/notes/javascript-escapes#hexadecimal
			string = '\\x' + pad(hex(codePoint), 2);
		}
		else { // `codePoint <= 0xFFFF` holds true.
			// https://mathiasbynens.be/notes/javascript-escapes#unicode
			string = '\\u' + pad(hex(codePoint), 4);
		}

		// There’s no need to account for astral symbols / surrogate pairs here,
		// since `codePointToString` is private and only used for BMP code points.
		// But if that’s what you need, just add an `else` block with this code:
		//
		//     string = '\\u' + pad(hex(highSurrogate(codePoint)), 4)
		//     	+ '\\u' + pad(hex(lowSurrogate(codePoint)), 4);

		return string;
	};

	var codePointToStringUnicode = function(codePoint) {
		if (codePoint <= 0xFFFF) {
			return codePointToString(codePoint);
		}
		return '\\u{' + codePoint.toString(16).toUpperCase() + '}';
	};

	var symbolToCodePoint = function(symbol) {
		var length = symbol.length;
		var first = symbol.charCodeAt(0);
		var second;
		if (
			first >= HIGH_SURROGATE_MIN && first <= HIGH_SURROGATE_MAX &&
			length > 1 // There is a next code unit.
		) {
			// `first` is a high surrogate, and there is a next character. Assume
			// it’s a low surrogate (else it’s invalid usage of Regenerate anyway).
			second = symbol.charCodeAt(1);
			// https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
			return (first - HIGH_SURROGATE_MIN) * 0x400 +
				second - LOW_SURROGATE_MIN + 0x10000;
		}
		return first;
	};

	var createBMPCharacterClasses = function(data) {
		// Iterate over the data per `(start, end)` pair.
		var result = '';
		var index = 0;
		var start;
		var end;
		var length = data.length;
		if (dataIsSingleton(data)) {
			return codePointToString(data[0]);
		}
		while (index < length) {
			start = data[index];
			end = data[index + 1] - 1; // Note: the `- 1` makes `end` inclusive.
			if (start == end) {
				result += codePointToString(start);
			} else if (start + 1 == end) {
				result += codePointToString(start) + codePointToString(end);
			} else {
				result += codePointToString(start) + '-' + codePointToString(end);
			}
			index += 2;
		}
		return '[' + result + ']';
	};

	var createUnicodeCharacterClasses = function(data) {
		// Iterate over the data per `(start, end)` pair.
		var result = '';
		var index = 0;
		var start;
		var end;
		var length = data.length;
		if (dataIsSingleton(data)) {
			return codePointToStringUnicode(data[0]);
		}
		while (index < length) {
			start = data[index];
			end = data[index + 1] - 1; // Note: the `- 1` makes `end` inclusive.
			if (start == end) {
				result += codePointToStringUnicode(start);
			} else if (start + 1 == end) {
				result += codePointToStringUnicode(start) + codePointToStringUnicode(end);
			} else {
				result += codePointToStringUnicode(start) + '-' + codePointToStringUnicode(end);
			}
			index += 2;
		}
		return '[' + result + ']';
	};

	var splitAtBMP = function(data) {
		// Iterate over the data per `(start, end)` pair.
		var loneHighSurrogates = [];
		var loneLowSurrogates = [];
		var bmp = [];
		var astral = [];
		var index = 0;
		var start;
		var end;
		var length = data.length;
		while (index < length) {
			start = data[index];
			end = data[index + 1] - 1; // Note: the `- 1` makes `end` inclusive.

			if (start < HIGH_SURROGATE_MIN) {

				// The range starts and ends before the high surrogate range.
				// E.g. (0, 0x10).
				if (end < HIGH_SURROGATE_MIN) {
					bmp.push(start, end + 1);
				}

				// The range starts before the high surrogate range and ends within it.
				// E.g. (0, 0xD855).
				if (end >= HIGH_SURROGATE_MIN && end <= HIGH_SURROGATE_MAX) {
					bmp.push(start, HIGH_SURROGATE_MIN);
					loneHighSurrogates.push(HIGH_SURROGATE_MIN, end + 1);
				}

				// The range starts before the high surrogate range and ends in the low
				// surrogate range. E.g. (0, 0xDCFF).
				if (end >= LOW_SURROGATE_MIN && end <= LOW_SURROGATE_MAX) {
					bmp.push(start, HIGH_SURROGATE_MIN);
					loneHighSurrogates.push(HIGH_SURROGATE_MIN, HIGH_SURROGATE_MAX + 1);
					loneLowSurrogates.push(LOW_SURROGATE_MIN, end + 1);
				}

				// The range starts before the high surrogate range and ends after the
				// low surrogate range. E.g. (0, 0x10FFFF).
				if (end > LOW_SURROGATE_MAX) {
					bmp.push(start, HIGH_SURROGATE_MIN);
					loneHighSurrogates.push(HIGH_SURROGATE_MIN, HIGH_SURROGATE_MAX + 1);
					loneLowSurrogates.push(LOW_SURROGATE_MIN, LOW_SURROGATE_MAX + 1);
					if (end <= 0xFFFF) {
						bmp.push(LOW_SURROGATE_MAX + 1, end + 1);
					} else {
						bmp.push(LOW_SURROGATE_MAX + 1, 0xFFFF + 1);
						astral.push(0xFFFF + 1, end + 1);
					}
				}

			} else if (start >= HIGH_SURROGATE_MIN && start <= HIGH_SURROGATE_MAX) {

				// The range starts and ends in the high surrogate range.
				// E.g. (0xD855, 0xD866).
				if (end >= HIGH_SURROGATE_MIN && end <= HIGH_SURROGATE_MAX) {
					loneHighSurrogates.push(start, end + 1);
				}

				// The range starts in the high surrogate range and ends in the low
				// surrogate range. E.g. (0xD855, 0xDCFF).
				if (end >= LOW_SURROGATE_MIN && end <= LOW_SURROGATE_MAX) {
					loneHighSurrogates.push(start, HIGH_SURROGATE_MAX + 1);
					loneLowSurrogates.push(LOW_SURROGATE_MIN, end + 1);
				}

				// The range starts in the high surrogate range and ends after the low
				// surrogate range. E.g. (0xD855, 0x10FFFF).
				if (end > LOW_SURROGATE_MAX) {
					loneHighSurrogates.push(start, HIGH_SURROGATE_MAX + 1);
					loneLowSurrogates.push(LOW_SURROGATE_MIN, LOW_SURROGATE_MAX + 1);
					if (end <= 0xFFFF) {
						bmp.push(LOW_SURROGATE_MAX + 1, end + 1);
					} else {
						bmp.push(LOW_SURROGATE_MAX + 1, 0xFFFF + 1);
						astral.push(0xFFFF + 1, end + 1);
					}
				}

			} else if (start >= LOW_SURROGATE_MIN && start <= LOW_SURROGATE_MAX) {

				// The range starts and ends in the low surrogate range.
				// E.g. (0xDCFF, 0xDDFF).
				if (end >= LOW_SURROGATE_MIN && end <= LOW_SURROGATE_MAX) {
					loneLowSurrogates.push(start, end + 1);
				}

				// The range starts in the low surrogate range and ends after the low
				// surrogate range. E.g. (0xDCFF, 0x10FFFF).
				if (end > LOW_SURROGATE_MAX) {
					loneLowSurrogates.push(start, LOW_SURROGATE_MAX + 1);
					if (end <= 0xFFFF) {
						bmp.push(LOW_SURROGATE_MAX + 1, end + 1);
					} else {
						bmp.push(LOW_SURROGATE_MAX + 1, 0xFFFF + 1);
						astral.push(0xFFFF + 1, end + 1);
					}
				}

			} else if (start > LOW_SURROGATE_MAX && start <= 0xFFFF) {

				// The range starts and ends after the low surrogate range.
				// E.g. (0xFFAA, 0x10FFFF).
				if (end <= 0xFFFF) {
					bmp.push(start, end + 1);
				} else {
					bmp.push(start, 0xFFFF + 1);
					astral.push(0xFFFF + 1, end + 1);
				}

			} else {

				// The range starts and ends in the astral range.
				astral.push(start, end + 1);

			}

			index += 2;
		}
		return {
			'loneHighSurrogates': loneHighSurrogates,
			'loneLowSurrogates': loneLowSurrogates,
			'bmp': bmp,
			'astral': astral
		};
	};

	var optimizeSurrogateMappings = function(surrogateMappings) {
		var result = [];
		var tmpLow = [];
		var addLow = false;
		var mapping;
		var nextMapping;
		var highSurrogates;
		var lowSurrogates;
		var nextHighSurrogates;
		var nextLowSurrogates;
		var index = -1;
		var length = surrogateMappings.length;
		while (++index < length) {
			mapping = surrogateMappings[index];
			nextMapping = surrogateMappings[index + 1];
			if (!nextMapping) {
				result.push(mapping);
				continue;
			}
			highSurrogates = mapping[0];
			lowSurrogates = mapping[1];
			nextHighSurrogates = nextMapping[0];
			nextLowSurrogates = nextMapping[1];

			// Check for identical high surrogate ranges.
			tmpLow = lowSurrogates;
			while (
				nextHighSurrogates &&
				highSurrogates[0] == nextHighSurrogates[0] &&
				highSurrogates[1] == nextHighSurrogates[1]
			) {
				// Merge with the next item.
				if (dataIsSingleton(nextLowSurrogates)) {
					tmpLow = dataAdd(tmpLow, nextLowSurrogates[0]);
				} else {
					tmpLow = dataAddRange(
						tmpLow,
						nextLowSurrogates[0],
						nextLowSurrogates[1] - 1
					);
				}
				++index;
				mapping = surrogateMappings[index];
				highSurrogates = mapping[0];
				lowSurrogates = mapping[1];
				nextMapping = surrogateMappings[index + 1];
				nextHighSurrogates = nextMapping && nextMapping[0];
				nextLowSurrogates = nextMapping && nextMapping[1];
				addLow = true;
			}
			result.push([
				highSurrogates,
				addLow ? tmpLow : lowSurrogates
			]);
			addLow = false;
		}
		return optimizeByLowSurrogates(result);
	};

	var optimizeByLowSurrogates = function(surrogateMappings) {
		if (surrogateMappings.length == 1) {
			return surrogateMappings;
		}
		var index = -1;
		var innerIndex = -1;
		while (++index < surrogateMappings.length) {
			var mapping = surrogateMappings[index];
			var lowSurrogates = mapping[1];
			var lowSurrogateStart = lowSurrogates[0];
			var lowSurrogateEnd = lowSurrogates[1];
			innerIndex = index; // Note: the loop starts at the next index.
			while (++innerIndex < surrogateMappings.length) {
				var otherMapping = surrogateMappings[innerIndex];
				var otherLowSurrogates = otherMapping[1];
				var otherLowSurrogateStart = otherLowSurrogates[0];
				var otherLowSurrogateEnd = otherLowSurrogates[1];
				if (
					lowSurrogateStart == otherLowSurrogateStart &&
					lowSurrogateEnd == otherLowSurrogateEnd
				) {
					// Add the code points in the other item to this one.
					if (dataIsSingleton(otherMapping[0])) {
						mapping[0] = dataAdd(mapping[0], otherMapping[0][0]);
					} else {
						mapping[0] = dataAddRange(
							mapping[0],
							otherMapping[0][0],
							otherMapping[0][1] - 1
						);
					}
					// Remove the other, now redundant, item.
					surrogateMappings.splice(innerIndex, 1);
					--innerIndex;
				}
			}
		}
		return surrogateMappings;
	};

	var surrogateSet = function(data) {
		// Exit early if `data` is an empty set.
		if (!data.length) {
			return [];
		}

		// Iterate over the data per `(start, end)` pair.
		var index = 0;
		var start;
		var end;
		var startHigh;
		var startLow;
		var endHigh;
		var endLow;
		var surrogateMappings = [];
		var length = data.length;
		while (index < length) {
			start = data[index];
			end = data[index + 1] - 1;

			startHigh = highSurrogate(start);
			startLow = lowSurrogate(start);
			endHigh = highSurrogate(end);
			endLow = lowSurrogate(end);

			var startsWithLowestLowSurrogate = startLow == LOW_SURROGATE_MIN;
			var endsWithHighestLowSurrogate = endLow == LOW_SURROGATE_MAX;
			var complete = false;

			// Append the previous high-surrogate-to-low-surrogate mappings.
			// Step 1: `(startHigh, startLow)` to `(startHigh, LOW_SURROGATE_MAX)`.
			if (
				startHigh == endHigh ||
				startsWithLowestLowSurrogate && endsWithHighestLowSurrogate
			) {
				surrogateMappings.push([
					[startHigh, endHigh + 1],
					[startLow, endLow + 1]
				]);
				complete = true;
			} else {
				surrogateMappings.push([
					[startHigh, startHigh + 1],
					[startLow, LOW_SURROGATE_MAX + 1]
				]);
			}

			// Step 2: `(startHigh + 1, LOW_SURROGATE_MIN)` to
			// `(endHigh - 1, LOW_SURROGATE_MAX)`.
			if (!complete && startHigh + 1 < endHigh) {
				if (endsWithHighestLowSurrogate) {
					// Combine step 2 and step 3.
					surrogateMappings.push([
						[startHigh + 1, endHigh + 1],
						[LOW_SURROGATE_MIN, endLow + 1]
					]);
					complete = true;
				} else {
					surrogateMappings.push([
						[startHigh + 1, endHigh],
						[LOW_SURROGATE_MIN, LOW_SURROGATE_MAX + 1]
					]);
				}
			}

			// Step 3. `(endHigh, LOW_SURROGATE_MIN)` to `(endHigh, endLow)`.
			if (!complete) {
				surrogateMappings.push([
					[endHigh, endHigh + 1],
					[LOW_SURROGATE_MIN, endLow + 1]
				]);
			}

			index += 2;
		}

		// The format of `surrogateMappings` is as follows:
		//
		//     [ surrogateMapping1, surrogateMapping2 ]
		//
		// i.e.:
		//
		//     [
		//       [ highSurrogates1, lowSurrogates1 ],
		//       [ highSurrogates2, lowSurrogates2 ]
		//     ]
		return optimizeSurrogateMappings(surrogateMappings);
	};

	var createSurrogateCharacterClasses = function(surrogateMappings) {
		var result = [];
		forEach(surrogateMappings, function(surrogateMapping) {
			var highSurrogates = surrogateMapping[0];
			var lowSurrogates = surrogateMapping[1];
			result.push(
				createBMPCharacterClasses(highSurrogates) +
				createBMPCharacterClasses(lowSurrogates)
			);
		});
		return result.join('|');
	};

	var createCharacterClassesFromData = function(data, bmpOnly, hasUnicodeFlag) {
		if (hasUnicodeFlag) {
			return createUnicodeCharacterClasses(data);
		}
		var result = [];

		var parts = splitAtBMP(data);
		var loneHighSurrogates = parts.loneHighSurrogates;
		var loneLowSurrogates = parts.loneLowSurrogates;
		var bmp = parts.bmp;
		var astral = parts.astral;
		var hasLoneHighSurrogates = !dataIsEmpty(loneHighSurrogates);
		var hasLoneLowSurrogates = !dataIsEmpty(loneLowSurrogates);

		var surrogateMappings = surrogateSet(astral);

		if (bmpOnly) {
			bmp = dataAddData(bmp, loneHighSurrogates);
			hasLoneHighSurrogates = false;
			bmp = dataAddData(bmp, loneLowSurrogates);
			hasLoneLowSurrogates = false;
		}

		if (!dataIsEmpty(bmp)) {
			// The data set contains BMP code points that are not high surrogates
			// needed for astral code points in the set.
			result.push(createBMPCharacterClasses(bmp));
		}
		if (surrogateMappings.length) {
			// The data set contains astral code points; append character classes
			// based on their surrogate pairs.
			result.push(createSurrogateCharacterClasses(surrogateMappings));
		}
		// https://gist.github.com/mathiasbynens/bbe7f870208abcfec860
		if (hasLoneHighSurrogates) {
			result.push(
				createBMPCharacterClasses(loneHighSurrogates) +
				// Make sure the high surrogates aren’t part of a surrogate pair.
				'(?![\\uDC00-\\uDFFF])'
			);
		}
		if (hasLoneLowSurrogates) {
			result.push(
				// It is not possible to accurately assert the low surrogates aren’t
				// part of a surrogate pair, since JavaScript regular expressions do
				// not support lookbehind.
				'(?:[^\\uD800-\\uDBFF]|^)' +
				createBMPCharacterClasses(loneLowSurrogates)
			);
		}
		return result.join('|');
	};

	/*--------------------------------------------------------------------------*/

	// `regenerate` can be used as a constructor (and new methods can be added to
	// its prototype) but also as a regular function, the latter of which is the
	// documented and most common usage. For that reason, it’s not capitalized.
	var regenerate = function(value) {
		if (arguments.length > 1) {
			value = slice.call(arguments);
		}
		if (this instanceof regenerate) {
			this.data = [];
			return value ? this.add(value) : this;
		}
		return (new regenerate).add(value);
	};

	regenerate.version = '1.3.3';

	var proto = regenerate.prototype;
	extend(proto, {
		'add': function(value) {
			var $this = this;
			if (value == null) {
				return $this;
			}
			if (value instanceof regenerate) {
				// Allow passing other Regenerate instances.
				$this.data = dataAddData($this.data, value.data);
				return $this;
			}
			if (arguments.length > 1) {
				value = slice.call(arguments);
			}
			if (isArray(value)) {
				forEach(value, function(item) {
					$this.add(item);
				});
				return $this;
			}
			$this.data = dataAdd(
				$this.data,
				isNumber(value) ? value : symbolToCodePoint(value)
			);
			return $this;
		},
		'remove': function(value) {
			var $this = this;
			if (value == null) {
				return $this;
			}
			if (value instanceof regenerate) {
				// Allow passing other Regenerate instances.
				$this.data = dataRemoveData($this.data, value.data);
				return $this;
			}
			if (arguments.length > 1) {
				value = slice.call(arguments);
			}
			if (isArray(value)) {
				forEach(value, function(item) {
					$this.remove(item);
				});
				return $this;
			}
			$this.data = dataRemove(
				$this.data,
				isNumber(value) ? value : symbolToCodePoint(value)
			);
			return $this;
		},
		'addRange': function(start, end) {
			var $this = this;
			$this.data = dataAddRange($this.data,
				isNumber(start) ? start : symbolToCodePoint(start),
				isNumber(end) ? end : symbolToCodePoint(end)
			);
			return $this;
		},
		'removeRange': function(start, end) {
			var $this = this;
			var startCodePoint = isNumber(start) ? start : symbolToCodePoint(start);
			var endCodePoint = isNumber(end) ? end : symbolToCodePoint(end);
			$this.data = dataRemoveRange(
				$this.data,
				startCodePoint,
				endCodePoint
			);
			return $this;
		},
		'intersection': function(argument) {
			var $this = this;
			// Allow passing other Regenerate instances.
			// TODO: Optimize this by writing and using `dataIntersectionData()`.
			var array = argument instanceof regenerate ?
				dataToArray(argument.data) :
				argument;
			$this.data = dataIntersection($this.data, array);
			return $this;
		},
		'contains': function(codePoint) {
			return dataContains(
				this.data,
				isNumber(codePoint) ? codePoint : symbolToCodePoint(codePoint)
			);
		},
		'clone': function() {
			var set = new regenerate;
			set.data = this.data.slice(0);
			return set;
		},
		'toString': function(options) {
			var result = createCharacterClassesFromData(
				this.data,
				options ? options.bmpOnly : false,
				options ? options.hasUnicodeFlag : false
			);
			if (!result) {
				// For an empty set, return something that can be inserted `/here/` to
				// form a valid regular expression. Avoid `(?:)` since that matches the
				// empty string.
				return '[]';
			}
			// Use `\0` instead of `\x00` where possible.
			return result.replace(regexNull, '\\0$1');
		},
		'toRegExp': function(flags) {
			var pattern = this.toString(
				flags && flags.indexOf('u') != -1 ?
					{ 'hasUnicodeFlag': true } :
					null
			);
			return RegExp(pattern, flags || '');
		},
		'valueOf': function() { // Note: `valueOf` is aliased as `toArray`.
			return dataToArray(this.data);
		}
	});

	proto.toArray = proto.valueOf;

	// Some AMD build optimizers, like r.js, check for specific condition patterns
	// like the following:
	if (
		typeof undefined == 'function' &&
		typeof undefined.amd == 'object' &&
		undefined.amd
	) {
		undefined(function() {
			return regenerate;
		});
	}	else if (freeExports && !freeExports.nodeType) {
		if (freeModule) { // in Node.js, io.js, or RingoJS v0.8.0+
			freeModule.exports = regenerate;
		} else { // in Narwhal or RingoJS v0.7.0-
			freeExports.regenerate = regenerate;
		}
	} else { // in Rhino or a web browser
		root.regenerate = regenerate;
	}

}(commonjsGlobal$1));
});

var unicodeCanonicalPropertyNamesEcmascript = new Set([
	// Non-binary properties:
	'General_Category',
	'Script',
	'Script_Extensions',
	// Binary properties:
	'Alphabetic',
	'Any',
	'ASCII',
	'ASCII_Hex_Digit',
	'Assigned',
	'Bidi_Control',
	'Bidi_Mirrored',
	'Case_Ignorable',
	'Cased',
	'Changes_When_Casefolded',
	'Changes_When_Casemapped',
	'Changes_When_Lowercased',
	'Changes_When_NFKC_Casefolded',
	'Changes_When_Titlecased',
	'Changes_When_Uppercased',
	'Dash',
	'Default_Ignorable_Code_Point',
	'Deprecated',
	'Diacritic',
	'Emoji',
	'Emoji_Component',
	'Emoji_Modifier',
	'Emoji_Modifier_Base',
	'Emoji_Presentation',
	'Extender',
	'Grapheme_Base',
	'Grapheme_Extend',
	'Hex_Digit',
	'ID_Continue',
	'ID_Start',
	'Ideographic',
	'IDS_Binary_Operator',
	'IDS_Trinary_Operator',
	'Join_Control',
	'Logical_Order_Exception',
	'Lowercase',
	'Math',
	'Noncharacter_Code_Point',
	'Pattern_Syntax',
	'Pattern_White_Space',
	'Quotation_Mark',
	'Radical',
	'Regional_Indicator',
	'Sentence_Terminal',
	'Soft_Dotted',
	'Terminal_Punctuation',
	'Unified_Ideograph',
	'Uppercase',
	'Variation_Selector',
	'White_Space',
	'XID_Continue',
	'XID_Start'
]);

// Generated using `npm run build`. Do not edit!
var unicodePropertyAliasesEcmascript = new Map([
	['scx', 'Script_Extensions'],
	['sc', 'Script'],
	['gc', 'General_Category'],
	['AHex', 'ASCII_Hex_Digit'],
	['Alpha', 'Alphabetic'],
	['Bidi_C', 'Bidi_Control'],
	['Bidi_M', 'Bidi_Mirrored'],
	['Cased', 'Cased'],
	['CI', 'Case_Ignorable'],
	['CWCF', 'Changes_When_Casefolded'],
	['CWCM', 'Changes_When_Casemapped'],
	['CWKCF', 'Changes_When_NFKC_Casefolded'],
	['CWL', 'Changes_When_Lowercased'],
	['CWT', 'Changes_When_Titlecased'],
	['CWU', 'Changes_When_Uppercased'],
	['Dash', 'Dash'],
	['Dep', 'Deprecated'],
	['DI', 'Default_Ignorable_Code_Point'],
	['Dia', 'Diacritic'],
	['Ext', 'Extender'],
	['Gr_Base', 'Grapheme_Base'],
	['Gr_Ext', 'Grapheme_Extend'],
	['Hex', 'Hex_Digit'],
	['IDC', 'ID_Continue'],
	['Ideo', 'Ideographic'],
	['IDS', 'ID_Start'],
	['IDSB', 'IDS_Binary_Operator'],
	['IDST', 'IDS_Trinary_Operator'],
	['Join_C', 'Join_Control'],
	['LOE', 'Logical_Order_Exception'],
	['Lower', 'Lowercase'],
	['Math', 'Math'],
	['NChar', 'Noncharacter_Code_Point'],
	['Pat_Syn', 'Pattern_Syntax'],
	['Pat_WS', 'Pattern_White_Space'],
	['QMark', 'Quotation_Mark'],
	['Radical', 'Radical'],
	['RI', 'Regional_Indicator'],
	['SD', 'Soft_Dotted'],
	['STerm', 'Sentence_Terminal'],
	['Term', 'Terminal_Punctuation'],
	['UIdeo', 'Unified_Ideograph'],
	['Upper', 'Uppercase'],
	['VS', 'Variation_Selector'],
	['WSpace', 'White_Space'],
	['space', 'White_Space'],
	['XIDC', 'XID_Continue'],
	['XIDS', 'XID_Start']
]);

const matchProperty = function(property) {
	if (unicodeCanonicalPropertyNamesEcmascript.has(property)) {
		return property;
	}
	if (unicodePropertyAliasesEcmascript.has(property)) {
		return unicodePropertyAliasesEcmascript.get(property);
	}
	throw new Error(`Unknown property: ${ property }`);
};

var unicodeMatchPropertyEcmascript = matchProperty;

var mappings = new Map([
	['General_Category', new Map([
		['C', 'Other'],
		['Cc', 'Control'],
		['cntrl', 'Control'],
		['Cf', 'Format'],
		['Cn', 'Unassigned'],
		['Co', 'Private_Use'],
		['Cs', 'Surrogate'],
		['L', 'Letter'],
		['LC', 'Cased_Letter'],
		['Ll', 'Lowercase_Letter'],
		['Lm', 'Modifier_Letter'],
		['Lo', 'Other_Letter'],
		['Lt', 'Titlecase_Letter'],
		['Lu', 'Uppercase_Letter'],
		['M', 'Mark'],
		['Combining_Mark', 'Mark'],
		['Mc', 'Spacing_Mark'],
		['Me', 'Enclosing_Mark'],
		['Mn', 'Nonspacing_Mark'],
		['N', 'Number'],
		['Nd', 'Decimal_Number'],
		['digit', 'Decimal_Number'],
		['Nl', 'Letter_Number'],
		['No', 'Other_Number'],
		['P', 'Punctuation'],
		['punct', 'Punctuation'],
		['Pc', 'Connector_Punctuation'],
		['Pd', 'Dash_Punctuation'],
		['Pe', 'Close_Punctuation'],
		['Pf', 'Final_Punctuation'],
		['Pi', 'Initial_Punctuation'],
		['Po', 'Other_Punctuation'],
		['Ps', 'Open_Punctuation'],
		['S', 'Symbol'],
		['Sc', 'Currency_Symbol'],
		['Sk', 'Modifier_Symbol'],
		['Sm', 'Math_Symbol'],
		['So', 'Other_Symbol'],
		['Z', 'Separator'],
		['Zl', 'Line_Separator'],
		['Zp', 'Paragraph_Separator'],
		['Zs', 'Space_Separator'],
		['Other', 'Other'],
		['Control', 'Control'],
		['Format', 'Format'],
		['Unassigned', 'Unassigned'],
		['Private_Use', 'Private_Use'],
		['Surrogate', 'Surrogate'],
		['Letter', 'Letter'],
		['Cased_Letter', 'Cased_Letter'],
		['Lowercase_Letter', 'Lowercase_Letter'],
		['Modifier_Letter', 'Modifier_Letter'],
		['Other_Letter', 'Other_Letter'],
		['Titlecase_Letter', 'Titlecase_Letter'],
		['Uppercase_Letter', 'Uppercase_Letter'],
		['Mark', 'Mark'],
		['Spacing_Mark', 'Spacing_Mark'],
		['Enclosing_Mark', 'Enclosing_Mark'],
		['Nonspacing_Mark', 'Nonspacing_Mark'],
		['Number', 'Number'],
		['Decimal_Number', 'Decimal_Number'],
		['Letter_Number', 'Letter_Number'],
		['Other_Number', 'Other_Number'],
		['Punctuation', 'Punctuation'],
		['Connector_Punctuation', 'Connector_Punctuation'],
		['Dash_Punctuation', 'Dash_Punctuation'],
		['Close_Punctuation', 'Close_Punctuation'],
		['Final_Punctuation', 'Final_Punctuation'],
		['Initial_Punctuation', 'Initial_Punctuation'],
		['Other_Punctuation', 'Other_Punctuation'],
		['Open_Punctuation', 'Open_Punctuation'],
		['Symbol', 'Symbol'],
		['Currency_Symbol', 'Currency_Symbol'],
		['Modifier_Symbol', 'Modifier_Symbol'],
		['Math_Symbol', 'Math_Symbol'],
		['Other_Symbol', 'Other_Symbol'],
		['Separator', 'Separator'],
		['Line_Separator', 'Line_Separator'],
		['Paragraph_Separator', 'Paragraph_Separator'],
		['Space_Separator', 'Space_Separator']
	])],
	['Script', new Map([
		['Adlm', 'Adlam'],
		['Aghb', 'Caucasian_Albanian'],
		['Ahom', 'Ahom'],
		['Arab', 'Arabic'],
		['Armi', 'Imperial_Aramaic'],
		['Armn', 'Armenian'],
		['Avst', 'Avestan'],
		['Bali', 'Balinese'],
		['Bamu', 'Bamum'],
		['Bass', 'Bassa_Vah'],
		['Batk', 'Batak'],
		['Beng', 'Bengali'],
		['Bhks', 'Bhaiksuki'],
		['Bopo', 'Bopomofo'],
		['Brah', 'Brahmi'],
		['Brai', 'Braille'],
		['Bugi', 'Buginese'],
		['Buhd', 'Buhid'],
		['Cakm', 'Chakma'],
		['Cans', 'Canadian_Aboriginal'],
		['Cari', 'Carian'],
		['Cham', 'Cham'],
		['Cher', 'Cherokee'],
		['Copt', 'Coptic'],
		['Qaac', 'Coptic'],
		['Cprt', 'Cypriot'],
		['Cyrl', 'Cyrillic'],
		['Deva', 'Devanagari'],
		['Dsrt', 'Deseret'],
		['Dupl', 'Duployan'],
		['Egyp', 'Egyptian_Hieroglyphs'],
		['Elba', 'Elbasan'],
		['Ethi', 'Ethiopic'],
		['Geor', 'Georgian'],
		['Glag', 'Glagolitic'],
		['Gonm', 'Masaram_Gondi'],
		['Goth', 'Gothic'],
		['Gran', 'Grantha'],
		['Grek', 'Greek'],
		['Gujr', 'Gujarati'],
		['Guru', 'Gurmukhi'],
		['Hang', 'Hangul'],
		['Hani', 'Han'],
		['Hano', 'Hanunoo'],
		['Hatr', 'Hatran'],
		['Hebr', 'Hebrew'],
		['Hira', 'Hiragana'],
		['Hluw', 'Anatolian_Hieroglyphs'],
		['Hmng', 'Pahawh_Hmong'],
		['Hrkt', 'Katakana_Or_Hiragana'],
		['Hung', 'Old_Hungarian'],
		['Ital', 'Old_Italic'],
		['Java', 'Javanese'],
		['Kali', 'Kayah_Li'],
		['Kana', 'Katakana'],
		['Khar', 'Kharoshthi'],
		['Khmr', 'Khmer'],
		['Khoj', 'Khojki'],
		['Knda', 'Kannada'],
		['Kthi', 'Kaithi'],
		['Lana', 'Tai_Tham'],
		['Laoo', 'Lao'],
		['Latn', 'Latin'],
		['Lepc', 'Lepcha'],
		['Limb', 'Limbu'],
		['Lina', 'Linear_A'],
		['Linb', 'Linear_B'],
		['Lisu', 'Lisu'],
		['Lyci', 'Lycian'],
		['Lydi', 'Lydian'],
		['Mahj', 'Mahajani'],
		['Mand', 'Mandaic'],
		['Mani', 'Manichaean'],
		['Marc', 'Marchen'],
		['Mend', 'Mende_Kikakui'],
		['Merc', 'Meroitic_Cursive'],
		['Mero', 'Meroitic_Hieroglyphs'],
		['Mlym', 'Malayalam'],
		['Modi', 'Modi'],
		['Mong', 'Mongolian'],
		['Mroo', 'Mro'],
		['Mtei', 'Meetei_Mayek'],
		['Mult', 'Multani'],
		['Mymr', 'Myanmar'],
		['Narb', 'Old_North_Arabian'],
		['Nbat', 'Nabataean'],
		['Newa', 'Newa'],
		['Nkoo', 'Nko'],
		['Nshu', 'Nushu'],
		['Ogam', 'Ogham'],
		['Olck', 'Ol_Chiki'],
		['Orkh', 'Old_Turkic'],
		['Orya', 'Oriya'],
		['Osge', 'Osage'],
		['Osma', 'Osmanya'],
		['Palm', 'Palmyrene'],
		['Pauc', 'Pau_Cin_Hau'],
		['Perm', 'Old_Permic'],
		['Phag', 'Phags_Pa'],
		['Phli', 'Inscriptional_Pahlavi'],
		['Phlp', 'Psalter_Pahlavi'],
		['Phnx', 'Phoenician'],
		['Plrd', 'Miao'],
		['Prti', 'Inscriptional_Parthian'],
		['Rjng', 'Rejang'],
		['Runr', 'Runic'],
		['Samr', 'Samaritan'],
		['Sarb', 'Old_South_Arabian'],
		['Saur', 'Saurashtra'],
		['Sgnw', 'SignWriting'],
		['Shaw', 'Shavian'],
		['Shrd', 'Sharada'],
		['Sidd', 'Siddham'],
		['Sind', 'Khudawadi'],
		['Sinh', 'Sinhala'],
		['Sora', 'Sora_Sompeng'],
		['Soyo', 'Soyombo'],
		['Sund', 'Sundanese'],
		['Sylo', 'Syloti_Nagri'],
		['Syrc', 'Syriac'],
		['Tagb', 'Tagbanwa'],
		['Takr', 'Takri'],
		['Tale', 'Tai_Le'],
		['Talu', 'New_Tai_Lue'],
		['Taml', 'Tamil'],
		['Tang', 'Tangut'],
		['Tavt', 'Tai_Viet'],
		['Telu', 'Telugu'],
		['Tfng', 'Tifinagh'],
		['Tglg', 'Tagalog'],
		['Thaa', 'Thaana'],
		['Thai', 'Thai'],
		['Tibt', 'Tibetan'],
		['Tirh', 'Tirhuta'],
		['Ugar', 'Ugaritic'],
		['Vaii', 'Vai'],
		['Wara', 'Warang_Citi'],
		['Xpeo', 'Old_Persian'],
		['Xsux', 'Cuneiform'],
		['Yiii', 'Yi'],
		['Zanb', 'Zanabazar_Square'],
		['Zinh', 'Inherited'],
		['Qaai', 'Inherited'],
		['Zyyy', 'Common'],
		['Zzzz', 'Unknown'],
		['Adlam', 'Adlam'],
		['Caucasian_Albanian', 'Caucasian_Albanian'],
		['Arabic', 'Arabic'],
		['Imperial_Aramaic', 'Imperial_Aramaic'],
		['Armenian', 'Armenian'],
		['Avestan', 'Avestan'],
		['Balinese', 'Balinese'],
		['Bamum', 'Bamum'],
		['Bassa_Vah', 'Bassa_Vah'],
		['Batak', 'Batak'],
		['Bengali', 'Bengali'],
		['Bhaiksuki', 'Bhaiksuki'],
		['Bopomofo', 'Bopomofo'],
		['Brahmi', 'Brahmi'],
		['Braille', 'Braille'],
		['Buginese', 'Buginese'],
		['Buhid', 'Buhid'],
		['Chakma', 'Chakma'],
		['Canadian_Aboriginal', 'Canadian_Aboriginal'],
		['Carian', 'Carian'],
		['Cherokee', 'Cherokee'],
		['Coptic', 'Coptic'],
		['Cypriot', 'Cypriot'],
		['Cyrillic', 'Cyrillic'],
		['Devanagari', 'Devanagari'],
		['Deseret', 'Deseret'],
		['Duployan', 'Duployan'],
		['Egyptian_Hieroglyphs', 'Egyptian_Hieroglyphs'],
		['Elbasan', 'Elbasan'],
		['Ethiopic', 'Ethiopic'],
		['Georgian', 'Georgian'],
		['Glagolitic', 'Glagolitic'],
		['Masaram_Gondi', 'Masaram_Gondi'],
		['Gothic', 'Gothic'],
		['Grantha', 'Grantha'],
		['Greek', 'Greek'],
		['Gujarati', 'Gujarati'],
		['Gurmukhi', 'Gurmukhi'],
		['Hangul', 'Hangul'],
		['Han', 'Han'],
		['Hanunoo', 'Hanunoo'],
		['Hatran', 'Hatran'],
		['Hebrew', 'Hebrew'],
		['Hiragana', 'Hiragana'],
		['Anatolian_Hieroglyphs', 'Anatolian_Hieroglyphs'],
		['Pahawh_Hmong', 'Pahawh_Hmong'],
		['Katakana_Or_Hiragana', 'Katakana_Or_Hiragana'],
		['Old_Hungarian', 'Old_Hungarian'],
		['Old_Italic', 'Old_Italic'],
		['Javanese', 'Javanese'],
		['Kayah_Li', 'Kayah_Li'],
		['Katakana', 'Katakana'],
		['Kharoshthi', 'Kharoshthi'],
		['Khmer', 'Khmer'],
		['Khojki', 'Khojki'],
		['Kannada', 'Kannada'],
		['Kaithi', 'Kaithi'],
		['Tai_Tham', 'Tai_Tham'],
		['Lao', 'Lao'],
		['Latin', 'Latin'],
		['Lepcha', 'Lepcha'],
		['Limbu', 'Limbu'],
		['Linear_A', 'Linear_A'],
		['Linear_B', 'Linear_B'],
		['Lycian', 'Lycian'],
		['Lydian', 'Lydian'],
		['Mahajani', 'Mahajani'],
		['Mandaic', 'Mandaic'],
		['Manichaean', 'Manichaean'],
		['Marchen', 'Marchen'],
		['Mende_Kikakui', 'Mende_Kikakui'],
		['Meroitic_Cursive', 'Meroitic_Cursive'],
		['Meroitic_Hieroglyphs', 'Meroitic_Hieroglyphs'],
		['Malayalam', 'Malayalam'],
		['Mongolian', 'Mongolian'],
		['Mro', 'Mro'],
		['Meetei_Mayek', 'Meetei_Mayek'],
		['Multani', 'Multani'],
		['Myanmar', 'Myanmar'],
		['Old_North_Arabian', 'Old_North_Arabian'],
		['Nabataean', 'Nabataean'],
		['Nko', 'Nko'],
		['Nushu', 'Nushu'],
		['Ogham', 'Ogham'],
		['Ol_Chiki', 'Ol_Chiki'],
		['Old_Turkic', 'Old_Turkic'],
		['Oriya', 'Oriya'],
		['Osage', 'Osage'],
		['Osmanya', 'Osmanya'],
		['Palmyrene', 'Palmyrene'],
		['Pau_Cin_Hau', 'Pau_Cin_Hau'],
		['Old_Permic', 'Old_Permic'],
		['Phags_Pa', 'Phags_Pa'],
		['Inscriptional_Pahlavi', 'Inscriptional_Pahlavi'],
		['Psalter_Pahlavi', 'Psalter_Pahlavi'],
		['Phoenician', 'Phoenician'],
		['Miao', 'Miao'],
		['Inscriptional_Parthian', 'Inscriptional_Parthian'],
		['Rejang', 'Rejang'],
		['Runic', 'Runic'],
		['Samaritan', 'Samaritan'],
		['Old_South_Arabian', 'Old_South_Arabian'],
		['Saurashtra', 'Saurashtra'],
		['SignWriting', 'SignWriting'],
		['Shavian', 'Shavian'],
		['Sharada', 'Sharada'],
		['Siddham', 'Siddham'],
		['Khudawadi', 'Khudawadi'],
		['Sinhala', 'Sinhala'],
		['Sora_Sompeng', 'Sora_Sompeng'],
		['Soyombo', 'Soyombo'],
		['Sundanese', 'Sundanese'],
		['Syloti_Nagri', 'Syloti_Nagri'],
		['Syriac', 'Syriac'],
		['Tagbanwa', 'Tagbanwa'],
		['Takri', 'Takri'],
		['Tai_Le', 'Tai_Le'],
		['New_Tai_Lue', 'New_Tai_Lue'],
		['Tamil', 'Tamil'],
		['Tangut', 'Tangut'],
		['Tai_Viet', 'Tai_Viet'],
		['Telugu', 'Telugu'],
		['Tifinagh', 'Tifinagh'],
		['Tagalog', 'Tagalog'],
		['Thaana', 'Thaana'],
		['Tibetan', 'Tibetan'],
		['Tirhuta', 'Tirhuta'],
		['Ugaritic', 'Ugaritic'],
		['Vai', 'Vai'],
		['Warang_Citi', 'Warang_Citi'],
		['Old_Persian', 'Old_Persian'],
		['Cuneiform', 'Cuneiform'],
		['Yi', 'Yi'],
		['Zanabazar_Square', 'Zanabazar_Square'],
		['Inherited', 'Inherited'],
		['Common', 'Common'],
		['Unknown', 'Unknown']
	])],
	['Script_Extensions', new Map([
		['Adlm', 'Adlam'],
		['Aghb', 'Caucasian_Albanian'],
		['Ahom', 'Ahom'],
		['Arab', 'Arabic'],
		['Armi', 'Imperial_Aramaic'],
		['Armn', 'Armenian'],
		['Avst', 'Avestan'],
		['Bali', 'Balinese'],
		['Bamu', 'Bamum'],
		['Bass', 'Bassa_Vah'],
		['Batk', 'Batak'],
		['Beng', 'Bengali'],
		['Bhks', 'Bhaiksuki'],
		['Bopo', 'Bopomofo'],
		['Brah', 'Brahmi'],
		['Brai', 'Braille'],
		['Bugi', 'Buginese'],
		['Buhd', 'Buhid'],
		['Cakm', 'Chakma'],
		['Cans', 'Canadian_Aboriginal'],
		['Cari', 'Carian'],
		['Cham', 'Cham'],
		['Cher', 'Cherokee'],
		['Copt', 'Coptic'],
		['Qaac', 'Coptic'],
		['Cprt', 'Cypriot'],
		['Cyrl', 'Cyrillic'],
		['Deva', 'Devanagari'],
		['Dsrt', 'Deseret'],
		['Dupl', 'Duployan'],
		['Egyp', 'Egyptian_Hieroglyphs'],
		['Elba', 'Elbasan'],
		['Ethi', 'Ethiopic'],
		['Geor', 'Georgian'],
		['Glag', 'Glagolitic'],
		['Gonm', 'Masaram_Gondi'],
		['Goth', 'Gothic'],
		['Gran', 'Grantha'],
		['Grek', 'Greek'],
		['Gujr', 'Gujarati'],
		['Guru', 'Gurmukhi'],
		['Hang', 'Hangul'],
		['Hani', 'Han'],
		['Hano', 'Hanunoo'],
		['Hatr', 'Hatran'],
		['Hebr', 'Hebrew'],
		['Hira', 'Hiragana'],
		['Hluw', 'Anatolian_Hieroglyphs'],
		['Hmng', 'Pahawh_Hmong'],
		['Hrkt', 'Katakana_Or_Hiragana'],
		['Hung', 'Old_Hungarian'],
		['Ital', 'Old_Italic'],
		['Java', 'Javanese'],
		['Kali', 'Kayah_Li'],
		['Kana', 'Katakana'],
		['Khar', 'Kharoshthi'],
		['Khmr', 'Khmer'],
		['Khoj', 'Khojki'],
		['Knda', 'Kannada'],
		['Kthi', 'Kaithi'],
		['Lana', 'Tai_Tham'],
		['Laoo', 'Lao'],
		['Latn', 'Latin'],
		['Lepc', 'Lepcha'],
		['Limb', 'Limbu'],
		['Lina', 'Linear_A'],
		['Linb', 'Linear_B'],
		['Lisu', 'Lisu'],
		['Lyci', 'Lycian'],
		['Lydi', 'Lydian'],
		['Mahj', 'Mahajani'],
		['Mand', 'Mandaic'],
		['Mani', 'Manichaean'],
		['Marc', 'Marchen'],
		['Mend', 'Mende_Kikakui'],
		['Merc', 'Meroitic_Cursive'],
		['Mero', 'Meroitic_Hieroglyphs'],
		['Mlym', 'Malayalam'],
		['Modi', 'Modi'],
		['Mong', 'Mongolian'],
		['Mroo', 'Mro'],
		['Mtei', 'Meetei_Mayek'],
		['Mult', 'Multani'],
		['Mymr', 'Myanmar'],
		['Narb', 'Old_North_Arabian'],
		['Nbat', 'Nabataean'],
		['Newa', 'Newa'],
		['Nkoo', 'Nko'],
		['Nshu', 'Nushu'],
		['Ogam', 'Ogham'],
		['Olck', 'Ol_Chiki'],
		['Orkh', 'Old_Turkic'],
		['Orya', 'Oriya'],
		['Osge', 'Osage'],
		['Osma', 'Osmanya'],
		['Palm', 'Palmyrene'],
		['Pauc', 'Pau_Cin_Hau'],
		['Perm', 'Old_Permic'],
		['Phag', 'Phags_Pa'],
		['Phli', 'Inscriptional_Pahlavi'],
		['Phlp', 'Psalter_Pahlavi'],
		['Phnx', 'Phoenician'],
		['Plrd', 'Miao'],
		['Prti', 'Inscriptional_Parthian'],
		['Rjng', 'Rejang'],
		['Runr', 'Runic'],
		['Samr', 'Samaritan'],
		['Sarb', 'Old_South_Arabian'],
		['Saur', 'Saurashtra'],
		['Sgnw', 'SignWriting'],
		['Shaw', 'Shavian'],
		['Shrd', 'Sharada'],
		['Sidd', 'Siddham'],
		['Sind', 'Khudawadi'],
		['Sinh', 'Sinhala'],
		['Sora', 'Sora_Sompeng'],
		['Soyo', 'Soyombo'],
		['Sund', 'Sundanese'],
		['Sylo', 'Syloti_Nagri'],
		['Syrc', 'Syriac'],
		['Tagb', 'Tagbanwa'],
		['Takr', 'Takri'],
		['Tale', 'Tai_Le'],
		['Talu', 'New_Tai_Lue'],
		['Taml', 'Tamil'],
		['Tang', 'Tangut'],
		['Tavt', 'Tai_Viet'],
		['Telu', 'Telugu'],
		['Tfng', 'Tifinagh'],
		['Tglg', 'Tagalog'],
		['Thaa', 'Thaana'],
		['Thai', 'Thai'],
		['Tibt', 'Tibetan'],
		['Tirh', 'Tirhuta'],
		['Ugar', 'Ugaritic'],
		['Vaii', 'Vai'],
		['Wara', 'Warang_Citi'],
		['Xpeo', 'Old_Persian'],
		['Xsux', 'Cuneiform'],
		['Yiii', 'Yi'],
		['Zanb', 'Zanabazar_Square'],
		['Zinh', 'Inherited'],
		['Qaai', 'Inherited'],
		['Zyyy', 'Common'],
		['Zzzz', 'Unknown'],
		['Adlam', 'Adlam'],
		['Caucasian_Albanian', 'Caucasian_Albanian'],
		['Arabic', 'Arabic'],
		['Imperial_Aramaic', 'Imperial_Aramaic'],
		['Armenian', 'Armenian'],
		['Avestan', 'Avestan'],
		['Balinese', 'Balinese'],
		['Bamum', 'Bamum'],
		['Bassa_Vah', 'Bassa_Vah'],
		['Batak', 'Batak'],
		['Bengali', 'Bengali'],
		['Bhaiksuki', 'Bhaiksuki'],
		['Bopomofo', 'Bopomofo'],
		['Brahmi', 'Brahmi'],
		['Braille', 'Braille'],
		['Buginese', 'Buginese'],
		['Buhid', 'Buhid'],
		['Chakma', 'Chakma'],
		['Canadian_Aboriginal', 'Canadian_Aboriginal'],
		['Carian', 'Carian'],
		['Cherokee', 'Cherokee'],
		['Coptic', 'Coptic'],
		['Cypriot', 'Cypriot'],
		['Cyrillic', 'Cyrillic'],
		['Devanagari', 'Devanagari'],
		['Deseret', 'Deseret'],
		['Duployan', 'Duployan'],
		['Egyptian_Hieroglyphs', 'Egyptian_Hieroglyphs'],
		['Elbasan', 'Elbasan'],
		['Ethiopic', 'Ethiopic'],
		['Georgian', 'Georgian'],
		['Glagolitic', 'Glagolitic'],
		['Masaram_Gondi', 'Masaram_Gondi'],
		['Gothic', 'Gothic'],
		['Grantha', 'Grantha'],
		['Greek', 'Greek'],
		['Gujarati', 'Gujarati'],
		['Gurmukhi', 'Gurmukhi'],
		['Hangul', 'Hangul'],
		['Han', 'Han'],
		['Hanunoo', 'Hanunoo'],
		['Hatran', 'Hatran'],
		['Hebrew', 'Hebrew'],
		['Hiragana', 'Hiragana'],
		['Anatolian_Hieroglyphs', 'Anatolian_Hieroglyphs'],
		['Pahawh_Hmong', 'Pahawh_Hmong'],
		['Katakana_Or_Hiragana', 'Katakana_Or_Hiragana'],
		['Old_Hungarian', 'Old_Hungarian'],
		['Old_Italic', 'Old_Italic'],
		['Javanese', 'Javanese'],
		['Kayah_Li', 'Kayah_Li'],
		['Katakana', 'Katakana'],
		['Kharoshthi', 'Kharoshthi'],
		['Khmer', 'Khmer'],
		['Khojki', 'Khojki'],
		['Kannada', 'Kannada'],
		['Kaithi', 'Kaithi'],
		['Tai_Tham', 'Tai_Tham'],
		['Lao', 'Lao'],
		['Latin', 'Latin'],
		['Lepcha', 'Lepcha'],
		['Limbu', 'Limbu'],
		['Linear_A', 'Linear_A'],
		['Linear_B', 'Linear_B'],
		['Lycian', 'Lycian'],
		['Lydian', 'Lydian'],
		['Mahajani', 'Mahajani'],
		['Mandaic', 'Mandaic'],
		['Manichaean', 'Manichaean'],
		['Marchen', 'Marchen'],
		['Mende_Kikakui', 'Mende_Kikakui'],
		['Meroitic_Cursive', 'Meroitic_Cursive'],
		['Meroitic_Hieroglyphs', 'Meroitic_Hieroglyphs'],
		['Malayalam', 'Malayalam'],
		['Mongolian', 'Mongolian'],
		['Mro', 'Mro'],
		['Meetei_Mayek', 'Meetei_Mayek'],
		['Multani', 'Multani'],
		['Myanmar', 'Myanmar'],
		['Old_North_Arabian', 'Old_North_Arabian'],
		['Nabataean', 'Nabataean'],
		['Nko', 'Nko'],
		['Nushu', 'Nushu'],
		['Ogham', 'Ogham'],
		['Ol_Chiki', 'Ol_Chiki'],
		['Old_Turkic', 'Old_Turkic'],
		['Oriya', 'Oriya'],
		['Osage', 'Osage'],
		['Osmanya', 'Osmanya'],
		['Palmyrene', 'Palmyrene'],
		['Pau_Cin_Hau', 'Pau_Cin_Hau'],
		['Old_Permic', 'Old_Permic'],
		['Phags_Pa', 'Phags_Pa'],
		['Inscriptional_Pahlavi', 'Inscriptional_Pahlavi'],
		['Psalter_Pahlavi', 'Psalter_Pahlavi'],
		['Phoenician', 'Phoenician'],
		['Miao', 'Miao'],
		['Inscriptional_Parthian', 'Inscriptional_Parthian'],
		['Rejang', 'Rejang'],
		['Runic', 'Runic'],
		['Samaritan', 'Samaritan'],
		['Old_South_Arabian', 'Old_South_Arabian'],
		['Saurashtra', 'Saurashtra'],
		['SignWriting', 'SignWriting'],
		['Shavian', 'Shavian'],
		['Sharada', 'Sharada'],
		['Siddham', 'Siddham'],
		['Khudawadi', 'Khudawadi'],
		['Sinhala', 'Sinhala'],
		['Sora_Sompeng', 'Sora_Sompeng'],
		['Soyombo', 'Soyombo'],
		['Sundanese', 'Sundanese'],
		['Syloti_Nagri', 'Syloti_Nagri'],
		['Syriac', 'Syriac'],
		['Tagbanwa', 'Tagbanwa'],
		['Takri', 'Takri'],
		['Tai_Le', 'Tai_Le'],
		['New_Tai_Lue', 'New_Tai_Lue'],
		['Tamil', 'Tamil'],
		['Tangut', 'Tangut'],
		['Tai_Viet', 'Tai_Viet'],
		['Telugu', 'Telugu'],
		['Tifinagh', 'Tifinagh'],
		['Tagalog', 'Tagalog'],
		['Thaana', 'Thaana'],
		['Tibetan', 'Tibetan'],
		['Tirhuta', 'Tirhuta'],
		['Ugaritic', 'Ugaritic'],
		['Vai', 'Vai'],
		['Warang_Citi', 'Warang_Citi'],
		['Old_Persian', 'Old_Persian'],
		['Cuneiform', 'Cuneiform'],
		['Yi', 'Yi'],
		['Zanabazar_Square', 'Zanabazar_Square'],
		['Inherited', 'Inherited'],
		['Common', 'Common'],
		['Unknown', 'Unknown']
	])]
]);

const matchPropertyValue = function(property, value) {
	const aliasToValue = mappings.get(property);
	if (!aliasToValue) {
		throw new Error(`Unknown property \`${ property }\`.`);
	}
	const canonicalValue = aliasToValue.get(value);
	if (canonicalValue) {
		return canonicalValue;
	}
	throw new Error(
		`Unknown value \`${ value }\` for property \`${ property }\`.`
	);
};

var unicodeMatchPropertyValueEcmascript = matchPropertyValue;

var iuMappings = new Map([
	[0x4B, 0x212A],
	[0x53, 0x17F],
	[0x6B, 0x212A],
	[0x73, 0x17F],
	[0xB5, 0x39C],
	[0xC5, 0x212B],
	[0xDF, 0x1E9E],
	[0xE5, 0x212B],
	[0x17F, 0x53],
	[0x1C4, 0x1C5],
	[0x1C5, 0x1C4],
	[0x1C7, 0x1C8],
	[0x1C8, 0x1C7],
	[0x1CA, 0x1CB],
	[0x1CB, 0x1CA],
	[0x1F1, 0x1F2],
	[0x1F2, 0x1F1],
	[0x26A, 0xA7AE],
	[0x29D, 0xA7B2],
	[0x345, 0x1FBE],
	[0x392, 0x3D0],
	[0x395, 0x3F5],
	[0x398, 0x3F4],
	[0x399, 0x1FBE],
	[0x39A, 0x3F0],
	[0x39C, 0xB5],
	[0x3A0, 0x3D6],
	[0x3A1, 0x3F1],
	[0x3A3, 0x3C2],
	[0x3A6, 0x3D5],
	[0x3A9, 0x2126],
	[0x3B8, 0x3F4],
	[0x3C2, 0x3A3],
	[0x3C9, 0x2126],
	[0x3D0, 0x392],
	[0x3D1, 0x3F4],
	[0x3D5, 0x3A6],
	[0x3D6, 0x3A0],
	[0x3F0, 0x39A],
	[0x3F1, 0x3A1],
	[0x3F4, [
		0x398,
		0x3D1,
		0x3B8
	]],
	[0x3F5, 0x395],
	[0x412, 0x1C80],
	[0x414, 0x1C81],
	[0x41E, 0x1C82],
	[0x421, 0x1C83],
	[0x422, 0x1C85],
	[0x42A, 0x1C86],
	[0x432, 0x1C80],
	[0x434, 0x1C81],
	[0x43E, 0x1C82],
	[0x441, 0x1C83],
	[0x442, [
		0x1C84,
		0x1C85
	]],
	[0x44A, 0x1C86],
	[0x462, 0x1C87],
	[0x463, 0x1C87],
	[0x13A0, 0xAB70],
	[0x13A1, 0xAB71],
	[0x13A2, 0xAB72],
	[0x13A3, 0xAB73],
	[0x13A4, 0xAB74],
	[0x13A5, 0xAB75],
	[0x13A6, 0xAB76],
	[0x13A7, 0xAB77],
	[0x13A8, 0xAB78],
	[0x13A9, 0xAB79],
	[0x13AA, 0xAB7A],
	[0x13AB, 0xAB7B],
	[0x13AC, 0xAB7C],
	[0x13AD, 0xAB7D],
	[0x13AE, 0xAB7E],
	[0x13AF, 0xAB7F],
	[0x13B0, 0xAB80],
	[0x13B1, 0xAB81],
	[0x13B2, 0xAB82],
	[0x13B3, 0xAB83],
	[0x13B4, 0xAB84],
	[0x13B5, 0xAB85],
	[0x13B6, 0xAB86],
	[0x13B7, 0xAB87],
	[0x13B8, 0xAB88],
	[0x13B9, 0xAB89],
	[0x13BA, 0xAB8A],
	[0x13BB, 0xAB8B],
	[0x13BC, 0xAB8C],
	[0x13BD, 0xAB8D],
	[0x13BE, 0xAB8E],
	[0x13BF, 0xAB8F],
	[0x13C0, 0xAB90],
	[0x13C1, 0xAB91],
	[0x13C2, 0xAB92],
	[0x13C3, 0xAB93],
	[0x13C4, 0xAB94],
	[0x13C5, 0xAB95],
	[0x13C6, 0xAB96],
	[0x13C7, 0xAB97],
	[0x13C8, 0xAB98],
	[0x13C9, 0xAB99],
	[0x13CA, 0xAB9A],
	[0x13CB, 0xAB9B],
	[0x13CC, 0xAB9C],
	[0x13CD, 0xAB9D],
	[0x13CE, 0xAB9E],
	[0x13CF, 0xAB9F],
	[0x13D0, 0xABA0],
	[0x13D1, 0xABA1],
	[0x13D2, 0xABA2],
	[0x13D3, 0xABA3],
	[0x13D4, 0xABA4],
	[0x13D5, 0xABA5],
	[0x13D6, 0xABA6],
	[0x13D7, 0xABA7],
	[0x13D8, 0xABA8],
	[0x13D9, 0xABA9],
	[0x13DA, 0xABAA],
	[0x13DB, 0xABAB],
	[0x13DC, 0xABAC],
	[0x13DD, 0xABAD],
	[0x13DE, 0xABAE],
	[0x13DF, 0xABAF],
	[0x13E0, 0xABB0],
	[0x13E1, 0xABB1],
	[0x13E2, 0xABB2],
	[0x13E3, 0xABB3],
	[0x13E4, 0xABB4],
	[0x13E5, 0xABB5],
	[0x13E6, 0xABB6],
	[0x13E7, 0xABB7],
	[0x13E8, 0xABB8],
	[0x13E9, 0xABB9],
	[0x13EA, 0xABBA],
	[0x13EB, 0xABBB],
	[0x13EC, 0xABBC],
	[0x13ED, 0xABBD],
	[0x13EE, 0xABBE],
	[0x13EF, 0xABBF],
	[0x13F0, 0x13F8],
	[0x13F1, 0x13F9],
	[0x13F2, 0x13FA],
	[0x13F3, 0x13FB],
	[0x13F4, 0x13FC],
	[0x13F5, 0x13FD],
	[0x13F8, 0x13F0],
	[0x13F9, 0x13F1],
	[0x13FA, 0x13F2],
	[0x13FB, 0x13F3],
	[0x13FC, 0x13F4],
	[0x13FD, 0x13F5],
	[0x1C80, [
		0x412,
		0x432
	]],
	[0x1C81, [
		0x414,
		0x434
	]],
	[0x1C82, [
		0x41E,
		0x43E
	]],
	[0x1C83, [
		0x421,
		0x441
	]],
	[0x1C84, [
		0x1C85,
		0x442
	]],
	[0x1C85, [
		0x422,
		0x1C84,
		0x442
	]],
	[0x1C86, [
		0x42A,
		0x44A
	]],
	[0x1C87, [
		0x462,
		0x463
	]],
	[0x1C88, [
		0xA64A,
		0xA64B
	]],
	[0x1E60, 0x1E9B],
	[0x1E9B, 0x1E60],
	[0x1E9E, 0xDF],
	[0x1F80, 0x1F88],
	[0x1F81, 0x1F89],
	[0x1F82, 0x1F8A],
	[0x1F83, 0x1F8B],
	[0x1F84, 0x1F8C],
	[0x1F85, 0x1F8D],
	[0x1F86, 0x1F8E],
	[0x1F87, 0x1F8F],
	[0x1F88, 0x1F80],
	[0x1F89, 0x1F81],
	[0x1F8A, 0x1F82],
	[0x1F8B, 0x1F83],
	[0x1F8C, 0x1F84],
	[0x1F8D, 0x1F85],
	[0x1F8E, 0x1F86],
	[0x1F8F, 0x1F87],
	[0x1F90, 0x1F98],
	[0x1F91, 0x1F99],
	[0x1F92, 0x1F9A],
	[0x1F93, 0x1F9B],
	[0x1F94, 0x1F9C],
	[0x1F95, 0x1F9D],
	[0x1F96, 0x1F9E],
	[0x1F97, 0x1F9F],
	[0x1F98, 0x1F90],
	[0x1F99, 0x1F91],
	[0x1F9A, 0x1F92],
	[0x1F9B, 0x1F93],
	[0x1F9C, 0x1F94],
	[0x1F9D, 0x1F95],
	[0x1F9E, 0x1F96],
	[0x1F9F, 0x1F97],
	[0x1FA0, 0x1FA8],
	[0x1FA1, 0x1FA9],
	[0x1FA2, 0x1FAA],
	[0x1FA3, 0x1FAB],
	[0x1FA4, 0x1FAC],
	[0x1FA5, 0x1FAD],
	[0x1FA6, 0x1FAE],
	[0x1FA7, 0x1FAF],
	[0x1FA8, 0x1FA0],
	[0x1FA9, 0x1FA1],
	[0x1FAA, 0x1FA2],
	[0x1FAB, 0x1FA3],
	[0x1FAC, 0x1FA4],
	[0x1FAD, 0x1FA5],
	[0x1FAE, 0x1FA6],
	[0x1FAF, 0x1FA7],
	[0x1FB3, 0x1FBC],
	[0x1FBC, 0x1FB3],
	[0x1FBE, [
		0x345,
		0x399
	]],
	[0x1FC3, 0x1FCC],
	[0x1FCC, 0x1FC3],
	[0x1FF3, 0x1FFC],
	[0x1FFC, 0x1FF3],
	[0x2126, [
		0x3A9,
		0x3C9
	]],
	[0x212A, 0x4B],
	[0x212B, [
		0xC5,
		0xE5
	]],
	[0xA64A, 0x1C88],
	[0xA64B, 0x1C88],
	[0xA7AE, 0x26A],
	[0xA7B2, 0x29D],
	[0xA7B3, 0xAB53],
	[0xA7B4, 0xA7B5],
	[0xA7B5, 0xA7B4],
	[0xA7B6, 0xA7B7],
	[0xA7B7, 0xA7B6],
	[0xAB53, 0xA7B3],
	[0xAB70, 0x13A0],
	[0xAB71, 0x13A1],
	[0xAB72, 0x13A2],
	[0xAB73, 0x13A3],
	[0xAB74, 0x13A4],
	[0xAB75, 0x13A5],
	[0xAB76, 0x13A6],
	[0xAB77, 0x13A7],
	[0xAB78, 0x13A8],
	[0xAB79, 0x13A9],
	[0xAB7A, 0x13AA],
	[0xAB7B, 0x13AB],
	[0xAB7C, 0x13AC],
	[0xAB7D, 0x13AD],
	[0xAB7E, 0x13AE],
	[0xAB7F, 0x13AF],
	[0xAB80, 0x13B0],
	[0xAB81, 0x13B1],
	[0xAB82, 0x13B2],
	[0xAB83, 0x13B3],
	[0xAB84, 0x13B4],
	[0xAB85, 0x13B5],
	[0xAB86, 0x13B6],
	[0xAB87, 0x13B7],
	[0xAB88, 0x13B8],
	[0xAB89, 0x13B9],
	[0xAB8A, 0x13BA],
	[0xAB8B, 0x13BB],
	[0xAB8C, 0x13BC],
	[0xAB8D, 0x13BD],
	[0xAB8E, 0x13BE],
	[0xAB8F, 0x13BF],
	[0xAB90, 0x13C0],
	[0xAB91, 0x13C1],
	[0xAB92, 0x13C2],
	[0xAB93, 0x13C3],
	[0xAB94, 0x13C4],
	[0xAB95, 0x13C5],
	[0xAB96, 0x13C6],
	[0xAB97, 0x13C7],
	[0xAB98, 0x13C8],
	[0xAB99, 0x13C9],
	[0xAB9A, 0x13CA],
	[0xAB9B, 0x13CB],
	[0xAB9C, 0x13CC],
	[0xAB9D, 0x13CD],
	[0xAB9E, 0x13CE],
	[0xAB9F, 0x13CF],
	[0xABA0, 0x13D0],
	[0xABA1, 0x13D1],
	[0xABA2, 0x13D2],
	[0xABA3, 0x13D3],
	[0xABA4, 0x13D4],
	[0xABA5, 0x13D5],
	[0xABA6, 0x13D6],
	[0xABA7, 0x13D7],
	[0xABA8, 0x13D8],
	[0xABA9, 0x13D9],
	[0xABAA, 0x13DA],
	[0xABAB, 0x13DB],
	[0xABAC, 0x13DC],
	[0xABAD, 0x13DD],
	[0xABAE, 0x13DE],
	[0xABAF, 0x13DF],
	[0xABB0, 0x13E0],
	[0xABB1, 0x13E1],
	[0xABB2, 0x13E2],
	[0xABB3, 0x13E3],
	[0xABB4, 0x13E4],
	[0xABB5, 0x13E5],
	[0xABB6, 0x13E6],
	[0xABB7, 0x13E7],
	[0xABB8, 0x13E8],
	[0xABB9, 0x13E9],
	[0xABBA, 0x13EA],
	[0xABBB, 0x13EB],
	[0xABBC, 0x13EC],
	[0xABBD, 0x13ED],
	[0xABBE, 0x13EE],
	[0xABBF, 0x13EF],
	[0x10400, 0x10428],
	[0x10401, 0x10429],
	[0x10402, 0x1042A],
	[0x10403, 0x1042B],
	[0x10404, 0x1042C],
	[0x10405, 0x1042D],
	[0x10406, 0x1042E],
	[0x10407, 0x1042F],
	[0x10408, 0x10430],
	[0x10409, 0x10431],
	[0x1040A, 0x10432],
	[0x1040B, 0x10433],
	[0x1040C, 0x10434],
	[0x1040D, 0x10435],
	[0x1040E, 0x10436],
	[0x1040F, 0x10437],
	[0x10410, 0x10438],
	[0x10411, 0x10439],
	[0x10412, 0x1043A],
	[0x10413, 0x1043B],
	[0x10414, 0x1043C],
	[0x10415, 0x1043D],
	[0x10416, 0x1043E],
	[0x10417, 0x1043F],
	[0x10418, 0x10440],
	[0x10419, 0x10441],
	[0x1041A, 0x10442],
	[0x1041B, 0x10443],
	[0x1041C, 0x10444],
	[0x1041D, 0x10445],
	[0x1041E, 0x10446],
	[0x1041F, 0x10447],
	[0x10420, 0x10448],
	[0x10421, 0x10449],
	[0x10422, 0x1044A],
	[0x10423, 0x1044B],
	[0x10424, 0x1044C],
	[0x10425, 0x1044D],
	[0x10426, 0x1044E],
	[0x10427, 0x1044F],
	[0x10428, 0x10400],
	[0x10429, 0x10401],
	[0x1042A, 0x10402],
	[0x1042B, 0x10403],
	[0x1042C, 0x10404],
	[0x1042D, 0x10405],
	[0x1042E, 0x10406],
	[0x1042F, 0x10407],
	[0x10430, 0x10408],
	[0x10431, 0x10409],
	[0x10432, 0x1040A],
	[0x10433, 0x1040B],
	[0x10434, 0x1040C],
	[0x10435, 0x1040D],
	[0x10436, 0x1040E],
	[0x10437, 0x1040F],
	[0x10438, 0x10410],
	[0x10439, 0x10411],
	[0x1043A, 0x10412],
	[0x1043B, 0x10413],
	[0x1043C, 0x10414],
	[0x1043D, 0x10415],
	[0x1043E, 0x10416],
	[0x1043F, 0x10417],
	[0x10440, 0x10418],
	[0x10441, 0x10419],
	[0x10442, 0x1041A],
	[0x10443, 0x1041B],
	[0x10444, 0x1041C],
	[0x10445, 0x1041D],
	[0x10446, 0x1041E],
	[0x10447, 0x1041F],
	[0x10448, 0x10420],
	[0x10449, 0x10421],
	[0x1044A, 0x10422],
	[0x1044B, 0x10423],
	[0x1044C, 0x10424],
	[0x1044D, 0x10425],
	[0x1044E, 0x10426],
	[0x1044F, 0x10427],
	[0x104B0, 0x104D8],
	[0x104B1, 0x104D9],
	[0x104B2, 0x104DA],
	[0x104B3, 0x104DB],
	[0x104B4, 0x104DC],
	[0x104B5, 0x104DD],
	[0x104B6, 0x104DE],
	[0x104B7, 0x104DF],
	[0x104B8, 0x104E0],
	[0x104B9, 0x104E1],
	[0x104BA, 0x104E2],
	[0x104BB, 0x104E3],
	[0x104BC, 0x104E4],
	[0x104BD, 0x104E5],
	[0x104BE, 0x104E6],
	[0x104BF, 0x104E7],
	[0x104C0, 0x104E8],
	[0x104C1, 0x104E9],
	[0x104C2, 0x104EA],
	[0x104C3, 0x104EB],
	[0x104C4, 0x104EC],
	[0x104C5, 0x104ED],
	[0x104C6, 0x104EE],
	[0x104C7, 0x104EF],
	[0x104C8, 0x104F0],
	[0x104C9, 0x104F1],
	[0x104CA, 0x104F2],
	[0x104CB, 0x104F3],
	[0x104CC, 0x104F4],
	[0x104CD, 0x104F5],
	[0x104CE, 0x104F6],
	[0x104CF, 0x104F7],
	[0x104D0, 0x104F8],
	[0x104D1, 0x104F9],
	[0x104D2, 0x104FA],
	[0x104D3, 0x104FB],
	[0x104D8, 0x104B0],
	[0x104D9, 0x104B1],
	[0x104DA, 0x104B2],
	[0x104DB, 0x104B3],
	[0x104DC, 0x104B4],
	[0x104DD, 0x104B5],
	[0x104DE, 0x104B6],
	[0x104DF, 0x104B7],
	[0x104E0, 0x104B8],
	[0x104E1, 0x104B9],
	[0x104E2, 0x104BA],
	[0x104E3, 0x104BB],
	[0x104E4, 0x104BC],
	[0x104E5, 0x104BD],
	[0x104E6, 0x104BE],
	[0x104E7, 0x104BF],
	[0x104E8, 0x104C0],
	[0x104E9, 0x104C1],
	[0x104EA, 0x104C2],
	[0x104EB, 0x104C3],
	[0x104EC, 0x104C4],
	[0x104ED, 0x104C5],
	[0x104EE, 0x104C6],
	[0x104EF, 0x104C7],
	[0x104F0, 0x104C8],
	[0x104F1, 0x104C9],
	[0x104F2, 0x104CA],
	[0x104F3, 0x104CB],
	[0x104F4, 0x104CC],
	[0x104F5, 0x104CD],
	[0x104F6, 0x104CE],
	[0x104F7, 0x104CF],
	[0x104F8, 0x104D0],
	[0x104F9, 0x104D1],
	[0x104FA, 0x104D2],
	[0x104FB, 0x104D3],
	[0x10C80, 0x10CC0],
	[0x10C81, 0x10CC1],
	[0x10C82, 0x10CC2],
	[0x10C83, 0x10CC3],
	[0x10C84, 0x10CC4],
	[0x10C85, 0x10CC5],
	[0x10C86, 0x10CC6],
	[0x10C87, 0x10CC7],
	[0x10C88, 0x10CC8],
	[0x10C89, 0x10CC9],
	[0x10C8A, 0x10CCA],
	[0x10C8B, 0x10CCB],
	[0x10C8C, 0x10CCC],
	[0x10C8D, 0x10CCD],
	[0x10C8E, 0x10CCE],
	[0x10C8F, 0x10CCF],
	[0x10C90, 0x10CD0],
	[0x10C91, 0x10CD1],
	[0x10C92, 0x10CD2],
	[0x10C93, 0x10CD3],
	[0x10C94, 0x10CD4],
	[0x10C95, 0x10CD5],
	[0x10C96, 0x10CD6],
	[0x10C97, 0x10CD7],
	[0x10C98, 0x10CD8],
	[0x10C99, 0x10CD9],
	[0x10C9A, 0x10CDA],
	[0x10C9B, 0x10CDB],
	[0x10C9C, 0x10CDC],
	[0x10C9D, 0x10CDD],
	[0x10C9E, 0x10CDE],
	[0x10C9F, 0x10CDF],
	[0x10CA0, 0x10CE0],
	[0x10CA1, 0x10CE1],
	[0x10CA2, 0x10CE2],
	[0x10CA3, 0x10CE3],
	[0x10CA4, 0x10CE4],
	[0x10CA5, 0x10CE5],
	[0x10CA6, 0x10CE6],
	[0x10CA7, 0x10CE7],
	[0x10CA8, 0x10CE8],
	[0x10CA9, 0x10CE9],
	[0x10CAA, 0x10CEA],
	[0x10CAB, 0x10CEB],
	[0x10CAC, 0x10CEC],
	[0x10CAD, 0x10CED],
	[0x10CAE, 0x10CEE],
	[0x10CAF, 0x10CEF],
	[0x10CB0, 0x10CF0],
	[0x10CB1, 0x10CF1],
	[0x10CB2, 0x10CF2],
	[0x10CC0, 0x10C80],
	[0x10CC1, 0x10C81],
	[0x10CC2, 0x10C82],
	[0x10CC3, 0x10C83],
	[0x10CC4, 0x10C84],
	[0x10CC5, 0x10C85],
	[0x10CC6, 0x10C86],
	[0x10CC7, 0x10C87],
	[0x10CC8, 0x10C88],
	[0x10CC9, 0x10C89],
	[0x10CCA, 0x10C8A],
	[0x10CCB, 0x10C8B],
	[0x10CCC, 0x10C8C],
	[0x10CCD, 0x10C8D],
	[0x10CCE, 0x10C8E],
	[0x10CCF, 0x10C8F],
	[0x10CD0, 0x10C90],
	[0x10CD1, 0x10C91],
	[0x10CD2, 0x10C92],
	[0x10CD3, 0x10C93],
	[0x10CD4, 0x10C94],
	[0x10CD5, 0x10C95],
	[0x10CD6, 0x10C96],
	[0x10CD7, 0x10C97],
	[0x10CD8, 0x10C98],
	[0x10CD9, 0x10C99],
	[0x10CDA, 0x10C9A],
	[0x10CDB, 0x10C9B],
	[0x10CDC, 0x10C9C],
	[0x10CDD, 0x10C9D],
	[0x10CDE, 0x10C9E],
	[0x10CDF, 0x10C9F],
	[0x10CE0, 0x10CA0],
	[0x10CE1, 0x10CA1],
	[0x10CE2, 0x10CA2],
	[0x10CE3, 0x10CA3],
	[0x10CE4, 0x10CA4],
	[0x10CE5, 0x10CA5],
	[0x10CE6, 0x10CA6],
	[0x10CE7, 0x10CA7],
	[0x10CE8, 0x10CA8],
	[0x10CE9, 0x10CA9],
	[0x10CEA, 0x10CAA],
	[0x10CEB, 0x10CAB],
	[0x10CEC, 0x10CAC],
	[0x10CED, 0x10CAD],
	[0x10CEE, 0x10CAE],
	[0x10CEF, 0x10CAF],
	[0x10CF0, 0x10CB0],
	[0x10CF1, 0x10CB1],
	[0x10CF2, 0x10CB2],
	[0x118A0, 0x118C0],
	[0x118A1, 0x118C1],
	[0x118A2, 0x118C2],
	[0x118A3, 0x118C3],
	[0x118A4, 0x118C4],
	[0x118A5, 0x118C5],
	[0x118A6, 0x118C6],
	[0x118A7, 0x118C7],
	[0x118A8, 0x118C8],
	[0x118A9, 0x118C9],
	[0x118AA, 0x118CA],
	[0x118AB, 0x118CB],
	[0x118AC, 0x118CC],
	[0x118AD, 0x118CD],
	[0x118AE, 0x118CE],
	[0x118AF, 0x118CF],
	[0x118B0, 0x118D0],
	[0x118B1, 0x118D1],
	[0x118B2, 0x118D2],
	[0x118B3, 0x118D3],
	[0x118B4, 0x118D4],
	[0x118B5, 0x118D5],
	[0x118B6, 0x118D6],
	[0x118B7, 0x118D7],
	[0x118B8, 0x118D8],
	[0x118B9, 0x118D9],
	[0x118BA, 0x118DA],
	[0x118BB, 0x118DB],
	[0x118BC, 0x118DC],
	[0x118BD, 0x118DD],
	[0x118BE, 0x118DE],
	[0x118BF, 0x118DF],
	[0x118C0, 0x118A0],
	[0x118C1, 0x118A1],
	[0x118C2, 0x118A2],
	[0x118C3, 0x118A3],
	[0x118C4, 0x118A4],
	[0x118C5, 0x118A5],
	[0x118C6, 0x118A6],
	[0x118C7, 0x118A7],
	[0x118C8, 0x118A8],
	[0x118C9, 0x118A9],
	[0x118CA, 0x118AA],
	[0x118CB, 0x118AB],
	[0x118CC, 0x118AC],
	[0x118CD, 0x118AD],
	[0x118CE, 0x118AE],
	[0x118CF, 0x118AF],
	[0x118D0, 0x118B0],
	[0x118D1, 0x118B1],
	[0x118D2, 0x118B2],
	[0x118D3, 0x118B3],
	[0x118D4, 0x118B4],
	[0x118D5, 0x118B5],
	[0x118D6, 0x118B6],
	[0x118D7, 0x118B7],
	[0x118D8, 0x118B8],
	[0x118D9, 0x118B9],
	[0x118DA, 0x118BA],
	[0x118DB, 0x118BB],
	[0x118DC, 0x118BC],
	[0x118DD, 0x118BD],
	[0x118DE, 0x118BE],
	[0x118DF, 0x118BF],
	[0x1E900, 0x1E922],
	[0x1E901, 0x1E923],
	[0x1E902, 0x1E924],
	[0x1E903, 0x1E925],
	[0x1E904, 0x1E926],
	[0x1E905, 0x1E927],
	[0x1E906, 0x1E928],
	[0x1E907, 0x1E929],
	[0x1E908, 0x1E92A],
	[0x1E909, 0x1E92B],
	[0x1E90A, 0x1E92C],
	[0x1E90B, 0x1E92D],
	[0x1E90C, 0x1E92E],
	[0x1E90D, 0x1E92F],
	[0x1E90E, 0x1E930],
	[0x1E90F, 0x1E931],
	[0x1E910, 0x1E932],
	[0x1E911, 0x1E933],
	[0x1E912, 0x1E934],
	[0x1E913, 0x1E935],
	[0x1E914, 0x1E936],
	[0x1E915, 0x1E937],
	[0x1E916, 0x1E938],
	[0x1E917, 0x1E939],
	[0x1E918, 0x1E93A],
	[0x1E919, 0x1E93B],
	[0x1E91A, 0x1E93C],
	[0x1E91B, 0x1E93D],
	[0x1E91C, 0x1E93E],
	[0x1E91D, 0x1E93F],
	[0x1E91E, 0x1E940],
	[0x1E91F, 0x1E941],
	[0x1E920, 0x1E942],
	[0x1E921, 0x1E943],
	[0x1E922, 0x1E900],
	[0x1E923, 0x1E901],
	[0x1E924, 0x1E902],
	[0x1E925, 0x1E903],
	[0x1E926, 0x1E904],
	[0x1E927, 0x1E905],
	[0x1E928, 0x1E906],
	[0x1E929, 0x1E907],
	[0x1E92A, 0x1E908],
	[0x1E92B, 0x1E909],
	[0x1E92C, 0x1E90A],
	[0x1E92D, 0x1E90B],
	[0x1E92E, 0x1E90C],
	[0x1E92F, 0x1E90D],
	[0x1E930, 0x1E90E],
	[0x1E931, 0x1E90F],
	[0x1E932, 0x1E910],
	[0x1E933, 0x1E911],
	[0x1E934, 0x1E912],
	[0x1E935, 0x1E913],
	[0x1E936, 0x1E914],
	[0x1E937, 0x1E915],
	[0x1E938, 0x1E916],
	[0x1E939, 0x1E917],
	[0x1E93A, 0x1E918],
	[0x1E93B, 0x1E919],
	[0x1E93C, 0x1E91A],
	[0x1E93D, 0x1E91B],
	[0x1E93E, 0x1E91C],
	[0x1E93F, 0x1E91D],
	[0x1E940, 0x1E91E],
	[0x1E941, 0x1E91F],
	[0x1E942, 0x1E920],
	[0x1E943, 0x1E921]
]);

var REGULAR = new Map([
	['d', regenerate()
		.addRange(0x30, 0x39)],
	['D', regenerate()
		.addRange(0x0, 0x2F)
		.addRange(0x3A, 0xFFFF)],
	['s', regenerate(0x20, 0xA0, 0x1680, 0x202F, 0x205F, 0x3000, 0xFEFF)
		.addRange(0x9, 0xD)
		.addRange(0x2000, 0x200A)
		.addRange(0x2028, 0x2029)],
	['S', regenerate()
		.addRange(0x0, 0x8)
		.addRange(0xE, 0x1F)
		.addRange(0x21, 0x9F)
		.addRange(0xA1, 0x167F)
		.addRange(0x1681, 0x1FFF)
		.addRange(0x200B, 0x2027)
		.addRange(0x202A, 0x202E)
		.addRange(0x2030, 0x205E)
		.addRange(0x2060, 0x2FFF)
		.addRange(0x3001, 0xFEFE)
		.addRange(0xFF00, 0xFFFF)],
	['w', regenerate(0x5F)
		.addRange(0x30, 0x39)
		.addRange(0x41, 0x5A)
		.addRange(0x61, 0x7A)],
	['W', regenerate(0x60)
		.addRange(0x0, 0x2F)
		.addRange(0x3A, 0x40)
		.addRange(0x5B, 0x5E)
		.addRange(0x7B, 0xFFFF)]
]);

var UNICODE = new Map([
	['d', regenerate()
		.addRange(0x30, 0x39)],
	['D', regenerate()
		.addRange(0x0, 0x2F)
		.addRange(0x3A, 0x10FFFF)],
	['s', regenerate(0x20, 0xA0, 0x1680, 0x202F, 0x205F, 0x3000, 0xFEFF)
		.addRange(0x9, 0xD)
		.addRange(0x2000, 0x200A)
		.addRange(0x2028, 0x2029)],
	['S', regenerate()
		.addRange(0x0, 0x8)
		.addRange(0xE, 0x1F)
		.addRange(0x21, 0x9F)
		.addRange(0xA1, 0x167F)
		.addRange(0x1681, 0x1FFF)
		.addRange(0x200B, 0x2027)
		.addRange(0x202A, 0x202E)
		.addRange(0x2030, 0x205E)
		.addRange(0x2060, 0x2FFF)
		.addRange(0x3001, 0xFEFE)
		.addRange(0xFF00, 0x10FFFF)],
	['w', regenerate(0x5F)
		.addRange(0x30, 0x39)
		.addRange(0x41, 0x5A)
		.addRange(0x61, 0x7A)],
	['W', regenerate(0x60)
		.addRange(0x0, 0x2F)
		.addRange(0x3A, 0x40)
		.addRange(0x5B, 0x5E)
		.addRange(0x7B, 0x10FFFF)]
]);

var UNICODE_IGNORE_CASE = new Map([
	['d', regenerate()
		.addRange(0x30, 0x39)],
	['D', regenerate()
		.addRange(0x0, 0x2F)
		.addRange(0x3A, 0x10FFFF)],
	['s', regenerate(0x20, 0xA0, 0x1680, 0x202F, 0x205F, 0x3000, 0xFEFF)
		.addRange(0x9, 0xD)
		.addRange(0x2000, 0x200A)
		.addRange(0x2028, 0x2029)],
	['S', regenerate()
		.addRange(0x0, 0x8)
		.addRange(0xE, 0x1F)
		.addRange(0x21, 0x9F)
		.addRange(0xA1, 0x167F)
		.addRange(0x1681, 0x1FFF)
		.addRange(0x200B, 0x2027)
		.addRange(0x202A, 0x202E)
		.addRange(0x2030, 0x205E)
		.addRange(0x2060, 0x2FFF)
		.addRange(0x3001, 0xFEFE)
		.addRange(0xFF00, 0x10FFFF)],
	['w', regenerate(0x5F, 0x17F, 0x212A)
		.addRange(0x30, 0x39)
		.addRange(0x41, 0x5A)
		.addRange(0x61, 0x7A)],
	['W', regenerate(0x60)
		.addRange(0x0, 0x2F)
		.addRange(0x3A, 0x40)
		.addRange(0x5B, 0x5E)
		.addRange(0x7B, 0x17E)
		.addRange(0x180, 0x2129)
		.addRange(0x212B, 0x10FFFF)]
]);

var characterClassEscapeSets = {
	REGULAR: REGULAR,
	UNICODE: UNICODE,
	UNICODE_IGNORE_CASE: UNICODE_IGNORE_CASE
};

var rewritePattern_1 = createCommonjsModule$1(function (module) {
const generate = regjsgen.generate;
const parse = parser.parse;






// Prepare a Regenerate set containing all code points, used for negative
// character classes (if any).
const UNICODE_SET = regenerate().addRange(0x0, 0x10FFFF);
// Without the `u` flag, the range stops at 0xFFFF.
// https://mths.be/es6#sec-pattern-semantics
const BMP_SET = regenerate().addRange(0x0, 0xFFFF);

// Prepare a Regenerate set containing all code points that are supposed to be
// matched by `/./u`. https://mths.be/es6#sec-atom
const DOT_SET_UNICODE = UNICODE_SET.clone() // all Unicode code points
	.remove(
		// minus `LineTerminator`s (https://mths.be/es6#sec-line-terminators):
		0x000A, // Line Feed <LF>
		0x000D, // Carriage Return <CR>
		0x2028, // Line Separator <LS>
		0x2029  // Paragraph Separator <PS>
	);
// Prepare a Regenerate set containing all code points that are supposed to be
// matched by `/./` (only BMP code points).
const DOT_SET = DOT_SET_UNICODE.clone()
	.intersection(BMP_SET);

const getCharacterClassEscapeSet = (character, unicode, ignoreCase) => {
	if (unicode) {
		if (ignoreCase) {
			return characterClassEscapeSets.UNICODE_IGNORE_CASE.get(character);
		}
		return characterClassEscapeSets.UNICODE.get(character);
	}
	return characterClassEscapeSets.REGULAR.get(character);
};

const getDotSet = (unicode, dotAll) => {
	if (dotAll) {
		return unicode ? UNICODE_SET : BMP_SET;
	}
	return unicode ? DOT_SET_UNICODE : DOT_SET;
};

const getUnicodePropertyValueSet = (property, value) => {
	const path$$1 = value ?
		`${ property }/${ value }` :
		`Binary_Property/${ property }`;
	try {
		return commonjsRequire$1(`regenerate-unicode-properties/${ path$$1 }.js`);
	} catch (exception) {
		throw new Error(
			`Failed to recognize value \`${ value }\` for property ` +
			`\`${ property }\`.`
		);
	}
};

const handleLoneUnicodePropertyNameOrValue = (value) => {
	// It could be a `General_Category` value or a binary property.
	// Note: `unicodeMatchPropertyValue` throws on invalid values.
	try {
		const property = 'General_Category';
		const category = unicodeMatchPropertyValueEcmascript(property, value);
		return getUnicodePropertyValueSet(property, category);
	} catch (exception) {}
	// It’s not a `General_Category` value, so check if it’s a binary
	// property. Note: `unicodeMatchProperty` throws on invalid properties.
	const property = unicodeMatchPropertyEcmascript(value);
	return getUnicodePropertyValueSet(property);
};

const getUnicodePropertyEscapeSet = (value, isNegative) => {
	const parts = value.split('=');
	const firstPart = parts[0];
	let set;
	if (parts.length == 1) {
		set = handleLoneUnicodePropertyNameOrValue(firstPart);
	} else {
		// The pattern consists of two parts, i.e. `Property=Value`.
		const property = unicodeMatchPropertyEcmascript(firstPart);
		const value = unicodeMatchPropertyValueEcmascript(property, parts[1]);
		set = getUnicodePropertyValueSet(property, value);
	}
	if (isNegative) {
		return UNICODE_SET.clone().remove(set);
	}
	return set.clone();
};

// Given a range of code points, add any case-folded code points in that range
// to a set.
regenerate.prototype.iuAddRange = function(min, max) {
	const $this = this;
	do {
		const folded = caseFold(min);
		if (folded) {
			$this.add(folded);
		}
	} while (++min <= max);
	return $this;
};

const update = (item, pattern) => {
	let tree = parse(pattern, config.useUnicodeFlag ? 'u' : '');
	switch (tree.type) {
		case 'characterClass':
		case 'group':
		case 'value':
			// No wrapping needed.
			break;
		default:
			// Wrap the pattern in a non-capturing group.
			tree = wrap(tree, pattern);
	}
	Object.assign(item, tree);
};

const wrap = (tree, pattern) => {
	// Wrap the pattern in a non-capturing group.
	return {
		'type': 'group',
		'behavior': 'ignore',
		'body': [tree],
		'raw': `(?:${ pattern })`
	};
};

const caseFold = (codePoint) => {
	return iuMappings.get(codePoint) || false;
};

const processCharacterClass = (characterClassItem, regenerateOptions) => {
	let set = regenerate();
	for (var i = 0, list = characterClassItem.body; i < list.length; i += 1) {
		const item = list[i];

		switch (item.type) {
			case 'value':
				set.add(item.codePoint);
				if (config.ignoreCase && config.unicode && !config.useUnicodeFlag) {
					const folded = caseFold(item.codePoint);
					if (folded) {
						set.add(folded);
					}
				}
				break;
			case 'characterClassRange':
				const min = item.min.codePoint;
				const max = item.max.codePoint;
				set.addRange(min, max);
				if (config.ignoreCase && config.unicode && !config.useUnicodeFlag) {
					set.iuAddRange(min, max);
				}
				break;
			case 'characterClassEscape':
				set.add(getCharacterClassEscapeSet(
					item.value,
					config.unicode,
					config.ignoreCase
				));
				break;
			case 'unicodePropertyEscape':
				set.add(getUnicodePropertyEscapeSet(item.value, item.negative));
				break;
			// The `default` clause is only here as a safeguard; it should never be
			// reached. Code coverage tools should ignore it.
			/* istanbul ignore next */
			default:
				throw new Error(`Unknown term type: ${ item.type }`);
		}
	}
	if (characterClassItem.negative) {
		set = (config.unicode ? UNICODE_SET : BMP_SET).clone().remove(set);
	}
	update(characterClassItem, set.toString(regenerateOptions));
	return characterClassItem;
};

const processTerm = (item, regenerateOptions) => {
	switch (item.type) {
		case 'dot':
			update(
				item,
				getDotSet(config.unicode, config.dotAll).toString(regenerateOptions)
			);
			break;
		case 'characterClass':
			item = processCharacterClass(item, regenerateOptions);
			break;
		case 'unicodePropertyEscape':
			update(
				item,
				getUnicodePropertyEscapeSet(item.value, item.negative)
					.toString(regenerateOptions)
			);
			break;
		case 'characterClassEscape':
			update(
				item,
				getCharacterClassEscapeSet(
					item.value,
					config.unicode,
					config.ignoreCase
				).toString(regenerateOptions)
			);
			break;
		case 'alternative':
		case 'disjunction':
		case 'group':
		case 'quantifier':
			item.body = item.body.map(term => {
				return processTerm(term, regenerateOptions);
			});
			break;
		case 'value':
			const codePoint = item.codePoint;
			const set = regenerate(codePoint);
			if (config.ignoreCase && config.unicode && !config.useUnicodeFlag) {
				const folded = caseFold(codePoint);
				if (folded) {
					set.add(folded);
				}
			}
			update(item, set.toString(regenerateOptions));
			break;
		case 'anchor':
		case 'empty':
		case 'group':
		case 'reference':
			// Nothing to do here.
			break;
		// The `default` clause is only here as a safeguard; it should never be
		// reached. Code coverage tools should ignore it.
		/* istanbul ignore next */
		default:
			throw new Error(`Unknown term type: ${ item.type }`);
	}
	return item;
};

const config = {
	'ignoreCase': false,
	'unicode': false,
	'dotAll': false,
	'useUnicodeFlag': false
};
const rewritePattern = (pattern, flags, options) => {
	const regjsparserFeatures = {
		'unicodePropertyEscape': options && options.unicodePropertyEscape
	};
	config.ignoreCase = flags && flags.includes('i');
	config.unicode = flags && flags.includes('u');
	const supportDotAllFlag = options && options.dotAllFlag;
	config.dotAll = supportDotAllFlag && flags && flags.includes('s');
	config.useUnicodeFlag = options && options.useUnicodeFlag;
	const regenerateOptions = {
		'hasUnicodeFlag': config.useUnicodeFlag,
		'bmpOnly': !config.unicode
	};
	const tree = parse(pattern, flags, regjsparserFeatures);
	// Note: `processTerm` mutates `tree`.
	processTerm(tree, regenerateOptions);
	return generate(tree);
};

module.exports = rewritePattern;
});

class Literal extends Node$1 {
	initialise() {
		if (typeof this.value === 'string') {
			this.program.indentExclusionElements.push(this);
		}
	}

	transpile(code, transforms) {
		if (transforms.numericLiteral) {
			const leading = this.raw.slice(0, 2);
			if (leading === '0b' || leading === '0o') {
				code.overwrite(this.start, this.end, String(this.value), {
					storeName: true,
					contentOnly: true
				});
			}
		}

		if (this.regex) {
			const ref = this.regex;
			var pattern = ref.pattern;
			var flags = ref.flags;

			if (transforms.stickyRegExp && /y/.test(flags))
				{ throw new CompileError(
					'Regular expression sticky flag is not supported',
					this
				); }
			if (transforms.unicodeRegExp && /u/.test(flags)) {
				code.overwrite(
					this.start,
					this.end,
					`/${rewritePattern_1(pattern, flags)}/${flags.replace('u', '')}`,
					{
						contentOnly: true
					}
				);
			}
		}
	}
}

class MemberExpression extends Node$1 {
	transpile(code, transforms) {
		if (transforms.reservedProperties && reserved[this.property.name]) {
			code.overwrite(this.object.end, this.property.start, `['`);
			code.appendLeft(this.property.end, `']`);
		}

		super.transpile(code, transforms);
	}
}

class NewExpression extends Node$1 {
	initialise(transforms) {
		if (transforms.spreadRest && this.arguments.length) {
			const lexicalBoundary = this.findLexicalBoundary();

			let i = this.arguments.length;
			while (i--) {
				const arg = this.arguments[i];
				if (arg.type === 'SpreadElement' && isArguments(arg.argument)) {
					this.argumentsArrayAlias = lexicalBoundary.getArgumentsArrayAlias();
					break;
				}
			}
		}

		super.initialise(transforms);
	}

	transpile(code, transforms) {
		if (transforms.spreadRest && this.arguments.length) {
			const firstArgument = this.arguments[0];
			const isNew = true;
			let hasSpreadElements = spread(
				code,
				this.arguments,
				firstArgument.start,
				this.argumentsArrayAlias,
				isNew
			);

			if (hasSpreadElements) {
				code.prependRight(
					this.start + 'new'.length,
					' (Function.prototype.bind.apply('
				);
				code.overwrite(
					this.callee.end,
					firstArgument.start,
					', [ null ].concat( '
				);
				code.appendLeft(this.end, ' ))');
			}
		}

		super.transpile(code, transforms);
	}
}

class ObjectExpression extends Node$1 {
	transpile(code, transforms) {
		super.transpile(code, transforms);

		let firstPropertyStart = this.start + 1;
		let regularPropertyCount = 0;
		let spreadPropertyCount = 0;
		let computedPropertyCount = 0;
		let firstSpreadProperty = null;
		let firstComputedProperty = null;

		for (let i = 0; i < this.properties.length; ++i) {
			const prop = this.properties[i];
			if (prop.type === 'SpreadElement') {
				spreadPropertyCount += 1;
				if (firstSpreadProperty === null) { firstSpreadProperty = i; }
			} else if (prop.computed) {
				computedPropertyCount += 1;
				if (firstComputedProperty === null) { firstComputedProperty = i; }
			} else if (prop.type === 'Property') {
				regularPropertyCount += 1;
			}
		}

		if (spreadPropertyCount) {
			if (!this.program.options.objectAssign) {
				throw new CompileError(
					"Object spread operator requires specified objectAssign option with 'Object.assign' or polyfill helper.",
					this
				);
			}
			// enclose run of non-spread properties in curlies
			let i = this.properties.length;
			if (regularPropertyCount && !computedPropertyCount) {
				while (i--) {
					const prop = this.properties[i];

					if (prop.type === 'Property' && !prop.computed) {
						const lastProp = this.properties[i - 1];
						const nextProp = this.properties[i + 1];

						if (
							!lastProp ||
							lastProp.type !== 'Property' ||
							lastProp.computed
						) {
							code.prependRight(prop.start, '{');
						}

						if (
							!nextProp ||
							nextProp.type !== 'Property' ||
							nextProp.computed
						) {
							code.appendLeft(prop.end, '}');
						}
					}
				}
			}

			// wrap the whole thing in Object.assign
			firstPropertyStart = this.properties[0].start;
			if (!computedPropertyCount) {
				code.overwrite(
					this.start,
					firstPropertyStart,
					`${this.program.options.objectAssign}({}, `
				);
				code.overwrite(
					this.properties[this.properties.length - 1].end,
					this.end,
					')'
				);
			} else if (this.properties[0].type === 'SpreadElement') {
				code.overwrite(
					this.start,
					firstPropertyStart,
					`${this.program.options.objectAssign}({}, `
				);
				code.remove(this.end - 1, this.end);
				code.appendRight(this.end, ')');
			} else {
				code.prependLeft(this.start, `${this.program.options.objectAssign}(`);
				code.appendRight(this.end, ')');
			}
		}

		if (computedPropertyCount && transforms.computedProperty) {
			const i0 = this.getIndentation();

			let isSimpleAssignment;
			let name;

			if (
				this.parent.type === 'VariableDeclarator' &&
				this.parent.parent.declarations.length === 1 &&
				this.parent.id.type === 'Identifier'
			) {
				isSimpleAssignment = true;
				name = this.parent.id.alias || this.parent.id.name; // TODO is this right?
			} else if (
				this.parent.type === 'AssignmentExpression' &&
				this.parent.parent.type === 'ExpressionStatement' &&
				this.parent.left.type === 'Identifier'
			) {
				isSimpleAssignment = true;
				name = this.parent.left.alias || this.parent.left.name; // TODO is this right?
			} else if (
				this.parent.type === 'AssignmentPattern' &&
				this.parent.left.type === 'Identifier'
			) {
				isSimpleAssignment = true;
				name = this.parent.left.alias || this.parent.left.name; // TODO is this right?
			}

			if (spreadPropertyCount) { isSimpleAssignment = false; }

			// handle block scoping
			const declaration = this.findScope(false).findDeclaration(name);
			if (declaration) { name = declaration.name; }

			const start = firstPropertyStart;
			const end = this.end;

			if (isSimpleAssignment) {
				// ???
			} else {
				if (
					firstSpreadProperty === null ||
					firstComputedProperty < firstSpreadProperty
				) {
					name = this.findLexicalBoundary().declareIdentifier('obj');

					code.prependRight(this.start, `( ${name} = `);
				} else { name = null; } // We don't actually need this variable
			}

			const len = this.properties.length;
			let lastComputedProp;
			let sawNonComputedProperty = false;
			let isFirst = true;

			for (let i = 0; i < len; i += 1) {
				const prop = this.properties[i];
				let moveStart = i > 0 ? this.properties[i - 1].end : start;

				if (
					prop.type === 'Property' &&
					(prop.computed || (lastComputedProp && !spreadPropertyCount))
				) {
					if (i === 0) { moveStart = this.start + 1; } // Trim leading whitespace
					lastComputedProp = prop;

					if (!name) {
						name = this.findLexicalBoundary().declareIdentifier('obj');

						const propId = name + (prop.computed ? '' : '.');
						code.appendRight(prop.start, `( ${name} = {}, ${propId}`);
					} else {
						const propId =
							(isSimpleAssignment ? `;\n${i0}${name}` : `, ${name}`) +
							(prop.computed ? '' : '.');

						if (moveStart < prop.start) {
							code.overwrite(moveStart, prop.start, propId);
						} else {
							code.prependRight(prop.start, propId);
						}
					}

					let c = prop.key.end;
					if (prop.computed) {
						while (code.original[c] !== ']') { c += 1; }
						c += 1;
					}
					if (prop.shorthand) {
						code.overwrite(
							prop.start,
							prop.key.end,
							code.slice(prop.start, prop.key.end).replace(/:/, ' =')
						);
					} else {
						if (prop.value.start > c) { code.remove(c, prop.value.start); }
						code.appendLeft(c, ' = ');
					}

					if (prop.method && transforms.conciseMethodProperty) {
						code.prependRight(prop.value.start, 'function ');
					}
				} else if (prop.type === 'SpreadElement') {
					if (name && i > 0) {
						if (!lastComputedProp) {
							lastComputedProp = this.properties[i - 1];
						}
						code.appendLeft(lastComputedProp.end, `, ${name} )`);

						lastComputedProp = null;
						name = null;
					}
				} else {
					if (!isFirst && spreadPropertyCount) {
						// We are in an Object.assign context, so we need to wrap regular properties
						code.prependRight(prop.start, '{');
						code.appendLeft(prop.end, '}');
					}
					sawNonComputedProperty = true;
				}
				if (isFirst && (prop.type === 'SpreadElement' || prop.computed)) {
					let beginEnd = sawNonComputedProperty
						? this.properties[this.properties.length - 1].end
						: this.end - 1;
					// Trim trailing comma because it can easily become a leading comma which is illegal
					if (code.original[beginEnd] == ',') { ++beginEnd; }
					const closing = code.slice(beginEnd, end);
					code.prependLeft(moveStart, closing);
					code.remove(beginEnd, end);
					isFirst = false;
				}

				// Clean up some extranous whitespace
				let c = prop.end;
				if (i < len - 1 && !sawNonComputedProperty) {
					while (code.original[c] !== ',') { c += 1; }
				} else if (i == len - 1) { c = this.end; }
				code.remove(prop.end, c);
			}

			// special case
			if (computedPropertyCount === len) {
				code.remove(this.properties[len - 1].end, this.end - 1);
			}

			if (!isSimpleAssignment && name) {
				code.appendLeft(lastComputedProp.end, `, ${name} )`);
			}
		}
	}
}

class Property extends Node$1 {
	transpile(code, transforms) {
		super.transpile(code, transforms);

		if (
			transforms.conciseMethodProperty &&
			!this.computed &&
			this.parent.type !== 'ObjectPattern'
		) {
			if (this.shorthand) {
				code.prependRight(this.start, `${this.key.name}: `);
			} else if (this.method) {
				let name = '';
				if (this.program.options.namedFunctionExpressions !== false) {
					if (
						this.key.type === 'Literal' &&
						typeof this.key.value === 'number'
					) {
						name = '';
					} else if (this.key.type === 'Identifier') {
						if (
							reserved[this.key.name] ||
							!/^[a-z_$][a-z0-9_$]*$/i.test(this.key.name) ||
							this.value.body.scope.references[this.key.name]
						) {
							name = this.findScope(true).createIdentifier(this.key.name);
						} else {
							name = this.key.name;
						}
					} else {
						name = this.findScope(true).createIdentifier(this.key.value);
					}
					name = ' ' + name;
				}

				if (this.value.generator) { code.remove(this.start, this.key.start); }
				code.appendLeft(
					this.key.end,
					`: function${this.value.generator ? '*' : ''}${name}`
				);
			}
		}

		if (transforms.reservedProperties && reserved[this.key.name]) {
			code.prependRight(this.key.start, `'`);
			code.appendLeft(this.key.end, `'`);
		}
	}
}

class ReturnStatement extends Node$1 {
	initialise(transforms) {
		this.loop = this.findNearest(loopStatement);
		this.nearestFunction = this.findNearest(/Function/);

		if (
			this.loop &&
			(!this.nearestFunction || this.loop.depth > this.nearestFunction.depth)
		) {
			this.loop.canReturn = true;
			this.shouldWrap = true;
		}

		if (this.argument) { this.argument.initialise(transforms); }
	}

	transpile(code, transforms) {
		const shouldWrap =
			this.shouldWrap && this.loop && this.loop.shouldRewriteAsFunction;

		if (this.argument) {
			if (shouldWrap) { code.prependRight(this.argument.start, `{ v: `); }
			this.argument.transpile(code, transforms);
			if (shouldWrap) { code.appendLeft(this.argument.end, ` }`); }
		} else if (shouldWrap) {
			code.appendLeft(this.start + 6, ' {}');
		}
	}
}

class SpreadElement extends Node$1 {
	transpile(code, transforms) {
		if (this.parent.type == 'ObjectExpression') {
			code.remove(this.start, this.argument.start);
			code.remove(this.argument.end, this.end);
		}

		super.transpile(code, transforms);
	}
}

class Super extends Node$1 {
	initialise(transforms) {
		if (transforms.classes) {
			this.method = this.findNearest('MethodDefinition');
			if (!this.method)
				{ throw new CompileError(this, 'use of super outside class method'); }

			const parentClass = this.findNearest('ClassBody').parent;
			this.superClassName =
				parentClass.superClass && (parentClass.superClass.name || 'superclass');

			if (!this.superClassName)
				{ throw new CompileError('super used in base class', this); }

			this.isCalled =
				this.parent.type === 'CallExpression' && this === this.parent.callee;

			if (this.method.kind !== 'constructor' && this.isCalled) {
				throw new CompileError(
					'super() not allowed outside class constructor',
					this
				);
			}

			this.isMember = this.parent.type === 'MemberExpression';

			if (!this.isCalled && !this.isMember) {
				throw new CompileError(
					'Unexpected use of `super` (expected `super(...)` or `super.*`)',
					this
				);
			}
		}

		if (transforms.arrow) {
			const lexicalBoundary = this.findLexicalBoundary();
			const arrowFunction = this.findNearest('ArrowFunctionExpression');
			const loop = this.findNearest(loopStatement);

			if (arrowFunction && arrowFunction.depth > lexicalBoundary.depth) {
				this.thisAlias = lexicalBoundary.getThisAlias();
			}

			if (
				loop &&
				loop.body.contains(this) &&
				loop.depth > lexicalBoundary.depth
			) {
				this.thisAlias = lexicalBoundary.getThisAlias();
			}
		}
	}

	transpile(code, transforms) {
		if (transforms.classes) {
			const expression =
				this.isCalled || this.method.static
					? this.superClassName
					: `${this.superClassName}.prototype`;

			code.overwrite(this.start, this.end, expression, {
				storeName: true,
				contentOnly: true
			});

			const callExpression = this.isCalled ? this.parent : this.parent.parent;

			if (callExpression && callExpression.type === 'CallExpression') {
				if (!this.noCall) {
					// special case – `super( ...args )`
					code.appendLeft(callExpression.callee.end, '.call');
				}

				const thisAlias = this.thisAlias || 'this';

				if (callExpression.arguments.length) {
					code.appendLeft(callExpression.arguments[0].start, `${thisAlias}, `);
				} else {
					code.appendLeft(callExpression.end - 1, `${thisAlias}`);
				}
			}
		}
	}
}

class TaggedTemplateExpression extends Node$1 {
	initialise(transforms) {
		if (
			transforms.templateString &&
			!transforms.dangerousTaggedTemplateString
		) {
			throw new CompileError(
				"Tagged template strings are not supported. Use `transforms: { templateString: false }` to skip transformation and disable this error, or `transforms: { dangerousTaggedTemplateString: true }` if you know what you're doing",
				this
			);
		}

		super.initialise(transforms);
	}

	transpile(code, transforms) {
		if (transforms.templateString && transforms.dangerousTaggedTemplateString) {
			const ordered = this.quasi.expressions
				.concat(this.quasi.quasis)
				.sort((a, b) => a.start - b.start);

			// insert strings at start
			const templateStrings = this.quasi.quasis.map(quasi =>
				JSON.stringify(quasi.value.cooked)
			);
			code.overwrite(
				this.tag.end,
				ordered[0].start,
				`([${templateStrings.join(', ')}]`
			);

			let lastIndex = ordered[0].start;
			ordered.forEach(node => {
				if (node.type === 'TemplateElement') {
					code.remove(lastIndex, node.end);
				} else {
					code.overwrite(lastIndex, node.start, ', ');
				}

				lastIndex = node.end;
			});

			code.overwrite(lastIndex, this.end, ')');
		}

		super.transpile(code, transforms);
	}
}

class TemplateElement extends Node$1 {
	initialise() {
		this.program.indentExclusionElements.push(this);
	}
}

class TemplateLiteral extends Node$1 {
	transpile(code, transforms) {
		super.transpile(code, transforms);

		if (
			transforms.templateString &&
			this.parent.type !== 'TaggedTemplateExpression'
		) {
			let ordered = this.expressions
				.concat(this.quasis)
				.sort((a, b) => a.start - b.start || a.end - b.end)
				.filter((node, i) => {
					// include all expressions
					if (node.type !== 'TemplateElement') { return true; }

					// include all non-empty strings
					if (node.value.raw) { return true; }

					// exclude all empty strings not at the head
					return !i;
				});

			// special case – we may be able to skip the first element,
			// if it's the empty string, but only if the second and
			// third elements aren't both expressions (since they maybe
			// be numeric, and `1 + 2 + '3' === '33'`)
			if (ordered.length >= 3) {
				const first = ordered[0];
				var third = ordered[2];
				if (
					first.type === 'TemplateElement' &&
					first.value.raw === '' &&
					third.type === 'TemplateElement'
				) {
					ordered.shift();
				}
			}

			const parenthesise =
				(this.quasis.length !== 1 || this.expressions.length !== 0) &&
				this.parent.type !== 'TemplateLiteral' &&
				this.parent.type !== 'AssignmentExpression' &&
				this.parent.type !== 'AssignmentPattern' &&
				this.parent.type !== 'VariableDeclarator' &&
				(this.parent.type !== 'BinaryExpression' ||
					this.parent.operator !== '+');

			if (parenthesise) { code.appendRight(this.start, '('); }

			let lastIndex = this.start;

			ordered.forEach((node, i) => {
				let prefix = i === 0 ? (parenthesise ? '(' : '') : ' + ';

				if (node.type === 'TemplateElement') {
					code.overwrite(
						lastIndex,
						node.end,
						prefix + JSON.stringify(node.value.cooked)
					);
				} else {
					const parenthesise = node.type !== 'Identifier'; // TODO other cases where it's safe

					if (parenthesise) { prefix += '('; }

					code.remove(lastIndex, node.start);

					if (prefix) { code.prependRight(node.start, prefix); }
					if (parenthesise) { code.appendLeft(node.end, ')'); }
				}

				lastIndex = node.end;
			});

			if (parenthesise) { code.appendLeft(lastIndex, ')'); }
			code.remove(lastIndex, this.end);
		}
	}
}

class ThisExpression extends Node$1 {
	initialise(transforms) {
		if (transforms.arrow) {
			const lexicalBoundary = this.findLexicalBoundary();
			const arrowFunction = this.findNearest('ArrowFunctionExpression');
			const loop = this.findNearest(loopStatement);

			if (
				(arrowFunction && arrowFunction.depth > lexicalBoundary.depth) ||
				(loop &&
					loop.body.contains(this) &&
					loop.depth > lexicalBoundary.depth) ||
				(loop && loop.right && loop.right.contains(this))
			) {
				this.alias = lexicalBoundary.getThisAlias();
			}
		}
	}

	transpile(code) {
		if (this.alias) {
			code.overwrite(this.start, this.end, this.alias, {
				storeName: true,
				contentOnly: true
			});
		}
	}
}

class UpdateExpression extends Node$1 {
	initialise(transforms) {
		if (this.argument.type === 'Identifier') {
			const declaration = this.findScope(false).findDeclaration(
				this.argument.name
			);
			if (declaration && declaration.kind === 'const') {
				throw new CompileError(`${this.argument.name} is read-only`, this);
			}

			// special case – https://gitlab.com/Rich-Harris/buble/issues/150
			const statement = declaration && declaration.node.ancestor(3);
			if (
				statement &&
				statement.type === 'ForStatement' &&
				statement.body.contains(this)
			) {
				statement.reassigned[this.argument.name] = true;
			}
		}

		super.initialise(transforms);
	}
}

class VariableDeclaration extends Node$1 {
	initialise(transforms) {
		this.scope = this.findScope(this.kind === 'var');
		this.declarations.forEach(declarator => declarator.initialise(transforms));
	}

	transpile(code, transforms) {
		const i0 = this.getIndentation();
		let kind = this.kind;

		if (transforms.letConst && kind !== 'var') {
			kind = 'var';
			code.overwrite(this.start, this.start + this.kind.length, kind, {
				storeName: true
			});
		}

		if (transforms.destructuring && this.parent.type !== 'ForOfStatement') {
			let c = this.start;
			let lastDeclaratorIsPattern;

			this.declarations.forEach((declarator, i) => {
				declarator.transpile(code, transforms);

				if (declarator.id.type === 'Identifier') {
					if (i > 0 && this.declarations[i - 1].id.type !== 'Identifier') {
						code.overwrite(c, declarator.id.start, `var `);
					}
				} else {
					const inline = loopStatement.test(this.parent.type);

					if (i === 0) {
						code.remove(c, declarator.id.start);
					} else {
						code.overwrite(c, declarator.id.start, `;\n${i0}`);
					}

					const simple =
						declarator.init.type === 'Identifier' && !declarator.init.rewritten;

					const name = simple
						? declarator.init.name
						: declarator.findScope(true).createIdentifier('ref');

					c = declarator.start;

					let statementGenerators = [];

					if (simple) {
						code.remove(declarator.id.end, declarator.end);
					} else {
						statementGenerators.push((start, prefix, suffix) => {
							code.prependRight(declarator.id.end, `var ${name}`);
							code.appendLeft(declarator.init.end, `${suffix}`);
							code.move(declarator.id.end, declarator.end, start);
						});
					}

					destructure(
						code,
						declarator.findScope(false),
						declarator.id,
						name,
						inline,
						statementGenerators
					);

					let prefix = inline ? 'var ' : '';
					let suffix = inline ? `, ` : `;\n${i0}`;
					statementGenerators.forEach((fn, j) => {
						if (
							i === this.declarations.length - 1 &&
							j === statementGenerators.length - 1
						) {
							suffix = inline ? '' : ';';
						}

						fn(declarator.start, j === 0 ? prefix : '', suffix);
					});
				}

				c = declarator.end;
				lastDeclaratorIsPattern = declarator.id.type !== 'Identifier';
			});

			if (lastDeclaratorIsPattern && this.end > c) {
				code.overwrite(c, this.end, '', { contentOnly: true });
			}
		} else {
			this.declarations.forEach(declarator => {
				declarator.transpile(code, transforms);
			});
		}
	}
}

class VariableDeclarator extends Node$1 {
	initialise(transforms) {
		let kind = this.parent.kind;
		if (kind === 'let' && this.parent.parent.type === 'ForStatement') {
			kind = 'for.let'; // special case...
		}

		this.parent.scope.addDeclaration(this.id, kind);
		super.initialise(transforms);
	}

	transpile(code, transforms) {
		if (!this.init && transforms.letConst && this.parent.kind !== 'var') {
			let inLoop = this.findNearest(
				/Function|^For(In|Of)?Statement|^(?:Do)?WhileStatement/
			);
			if (
				inLoop &&
				!/Function/.test(inLoop.type) &&
				!this.isLeftDeclaratorOfLoop()
			) {
				code.appendLeft(this.id.end, ' = (void 0)');
			}
		}

		if (this.id) { this.id.transpile(code, transforms); }
		if (this.init) { this.init.transpile(code, transforms); }
	}

	isLeftDeclaratorOfLoop() {
		return (
			this.parent &&
			this.parent.type === 'VariableDeclaration' &&
			this.parent.parent &&
			(this.parent.parent.type === 'ForInStatement' ||
				this.parent.parent.type === 'ForOfStatement') &&
			this.parent.parent.left &&
			this.parent.parent.left.declarations[0] === this
		);
	}
}

var types$1$1 = {
	ArrayExpression,
	ArrowFunctionExpression,
	AssignmentExpression,
	BinaryExpression,
	BreakStatement,
	CallExpression,
	ClassBody,
	ClassDeclaration,
	ClassExpression,
	ContinueStatement,
	DoWhileStatement: LoopStatement,
	ExportNamedDeclaration,
	ExportDefaultDeclaration,
	ForStatement,
	ForInStatement,
	ForOfStatement,
	FunctionDeclaration,
	FunctionExpression,
	Identifier,
	IfStatement,
	ImportDeclaration,
	ImportDefaultSpecifier,
	ImportSpecifier,
	JSXAttribute,
	JSXClosingElement,
	JSXElement,
	JSXExpressionContainer,
	JSXOpeningElement,
	JSXSpreadAttribute,
	Literal,
	MemberExpression,
	NewExpression,
	ObjectExpression,
	Property,
	ReturnStatement,
	SpreadElement,
	Super,
	TaggedTemplateExpression,
	TemplateElement,
	TemplateLiteral,
	ThisExpression,
	UpdateExpression,
	VariableDeclaration,
	VariableDeclarator,
	WhileStatement: LoopStatement
};

const statementsWithBlocks = {
	IfStatement: 'consequent',
	ForStatement: 'body',
	ForInStatement: 'body',
	ForOfStatement: 'body',
	WhileStatement: 'body',
	DoWhileStatement: 'body',
	ArrowFunctionExpression: 'body'
};

function wrap(raw, parent) {
	if (!raw) { return; }

	if ('length' in raw) {
		let i = raw.length;
		while (i--) { wrap(raw[i], parent); }
		return;
	}

	// with e.g. shorthand properties, key and value are
	// the same node. We don't want to wrap an object twice
	if (raw.__wrapped) { return; }
	raw.__wrapped = true;

	if (!keys[raw.type]) {
		keys[raw.type] = Object.keys(raw).filter(
			key => typeof raw[key] === 'object'
		);
	}

	// special case – body-less if/for/while statements. TODO others?
	const bodyType = statementsWithBlocks[raw.type];
	if (bodyType && raw[bodyType].type !== 'BlockStatement') {
		const expression = raw[bodyType];

		// create a synthetic block statement, otherwise all hell
		// breaks loose when it comes to block scoping
		raw[bodyType] = {
			start: expression.start,
			end: expression.end,
			type: 'BlockStatement',
			body: [expression],
			synthetic: true
		};
	}

	new Node$1(raw, parent);

	const type =
		(raw.type === 'BlockStatement' ? BlockStatement : types$1$1[raw.type]) || Node$1;
	raw.__proto__ = type.prototype;
}

function Scope(options) {
	options = options || {};

	this.parent = options.parent;
	this.isBlockScope = !!options.block;

	let scope = this;
	while (scope.isBlockScope) { scope = scope.parent; }
	this.functionScope = scope;

	this.identifiers = [];
	this.declarations = Object.create(null);
	this.references = Object.create(null);
	this.blockScopedDeclarations = this.isBlockScope ? null : Object.create(null);
	this.aliases = this.isBlockScope ? null : Object.create(null);
}

Scope.prototype = {
	addDeclaration(node, kind) {
		for (var i = 0, list = extractNames(node); i < list.length; i += 1) {
			const identifier = list[i];

			const name = identifier.name;

			const declaration = { name, node: identifier, kind, instances: [] };
			this.declarations[name] = declaration;

			if (this.isBlockScope) {
				if (!this.functionScope.blockScopedDeclarations[name])
					{ this.functionScope.blockScopedDeclarations[name] = []; }
				this.functionScope.blockScopedDeclarations[name].push(declaration);
			}
		}
	},

	addReference(identifier) {
		if (this.consolidated) {
			this.consolidateReference(identifier);
		} else {
			this.identifiers.push(identifier);
		}
	},

	consolidate() {
		for (let i = 0; i < this.identifiers.length; i += 1) {
			// we might push to the array during consolidation, so don't cache length
			const identifier = this.identifiers[i];
			this.consolidateReference(identifier);
		}

		this.consolidated = true; // TODO understand why this is necessary... seems bad
	},

	consolidateReference(identifier) {
		const declaration = this.declarations[identifier.name];
		if (declaration) {
			declaration.instances.push(identifier);
		} else {
			this.references[identifier.name] = true;
			if (this.parent) { this.parent.addReference(identifier); }
		}
	},

	contains(name) {
		return (
			this.declarations[name] ||
			(this.parent ? this.parent.contains(name) : false)
		);
	},

	createIdentifier(base) {
		if (typeof base === 'number') { base = base.toString(); }

		base = base
			.replace(/\s/g, '')
			.replace(/\[([^\]]+)\]/g, '_$1')
			.replace(/[^a-zA-Z0-9_$]/g, '_')
			.replace(/_{2,}/, '_');

		let name = base;
		let counter = 1;

		while (
			this.declarations[name] ||
			this.references[name] ||
			this.aliases[name] ||
			name in reserved
		) {
			name = `${base}$${counter++}`;
		}

		this.aliases[name] = true;
		return name;
	},

	findDeclaration(name) {
		return (
			this.declarations[name] ||
			(this.parent && this.parent.findDeclaration(name))
		);
	}
};

function isUseStrict(node) {
	if (!node) { return false; }
	if (node.type !== 'ExpressionStatement') { return false; }
	if (node.expression.type !== 'Literal') { return false; }
	return node.expression.value === 'use strict';
}

class BlockStatement extends Node$1 {
	createScope() {
		this.parentIsFunction = /Function/.test(this.parent.type);
		this.isFunctionBlock = this.parentIsFunction || this.parent.type === 'Root';
		this.scope = new Scope({
			block: !this.isFunctionBlock,
			parent: this.parent.findScope(false)
		});

		if (this.parentIsFunction) {
			this.parent.params.forEach(node => {
				this.scope.addDeclaration(node, 'param');
			});
		}
	}

	initialise(transforms) {
		this.thisAlias = null;
		this.argumentsAlias = null;
		this.defaultParameters = [];
		this.createdDeclarations = [];

		// normally the scope gets created here, during initialisation,
		// but in some cases (e.g. `for` statements), we need to create
		// the scope early, as it pertains to both the init block and
		// the body of the statement
		if (!this.scope) { this.createScope(); }

		this.body.forEach(node => node.initialise(transforms));

		this.scope.consolidate();
	}

	findLexicalBoundary() {
		if (this.type === 'Program') { return this; }
		if (/^Function/.test(this.parent.type)) { return this; }

		return this.parent.findLexicalBoundary();
	}

	findScope(functionScope) {
		if (functionScope && !this.isFunctionBlock)
			{ return this.parent.findScope(functionScope); }
		return this.scope;
	}

	getArgumentsAlias() {
		if (!this.argumentsAlias) {
			this.argumentsAlias = this.scope.createIdentifier('arguments');
		}

		return this.argumentsAlias;
	}

	getArgumentsArrayAlias() {
		if (!this.argumentsArrayAlias) {
			this.argumentsArrayAlias = this.scope.createIdentifier('argsArray');
		}

		return this.argumentsArrayAlias;
	}

	getThisAlias() {
		if (!this.thisAlias) {
			this.thisAlias = this.scope.createIdentifier('this');
		}

		return this.thisAlias;
	}

	getIndentation() {
		if (this.indentation === undefined) {
			const source = this.program.magicString.original;

			const useOuter = this.synthetic || !this.body.length;
			let c = useOuter ? this.start : this.body[0].start;

			while (c && source[c] !== '\n') { c -= 1; }

			this.indentation = '';

			// eslint-disable-next-line no-constant-condition
			while (true) {
				c += 1;
				const char = source[c];

				if (char !== ' ' && char !== '\t') { break; }

				this.indentation += char;
			}

			const indentString = this.program.magicString.getIndentString();

			// account for dedented class constructors
			let parent = this.parent;
			while (parent) {
				if (parent.kind === 'constructor' && !parent.parent.parent.superClass) {
					this.indentation = this.indentation.replace(indentString, '');
				}

				parent = parent.parent;
			}

			if (useOuter) { this.indentation += indentString; }
		}

		return this.indentation;
	}

	transpile(code, transforms) {
		const indentation = this.getIndentation();

		let introStatementGenerators = [];

		if (this.argumentsAlias) {
			introStatementGenerators.push((start, prefix, suffix) => {
				const assignment = `${prefix}var ${this.argumentsAlias} = arguments${
					suffix
				}`;
				code.appendLeft(start, assignment);
			});
		}

		if (this.thisAlias) {
			introStatementGenerators.push((start, prefix, suffix) => {
				const assignment = `${prefix}var ${this.thisAlias} = this${suffix}`;
				code.appendLeft(start, assignment);
			});
		}

		if (this.argumentsArrayAlias) {
			introStatementGenerators.push((start, prefix, suffix) => {
				const i = this.scope.createIdentifier('i');
				const assignment = `${prefix}var ${i} = arguments.length, ${
					this.argumentsArrayAlias
				} = Array(${i});\n${indentation}while ( ${i}-- ) ${
					this.argumentsArrayAlias
				}[${i}] = arguments[${i}]${suffix}`;
				code.appendLeft(start, assignment);
			});
		}

		if (/Function/.test(this.parent.type)) {
			this.transpileParameters(
				code,
				transforms,
				indentation,
				introStatementGenerators
			);
		}

		if (transforms.letConst && this.isFunctionBlock) {
			this.transpileBlockScopedIdentifiers(code);
		}

		super.transpile(code, transforms);

		if (this.createdDeclarations.length) {
			introStatementGenerators.push((start, prefix, suffix) => {
				const assignment = `${prefix}var ${this.createdDeclarations.join(', ')}${suffix}`;
				code.appendLeft(start, assignment);
			});
		}

		if (this.synthetic) {
			if (this.parent.type === 'ArrowFunctionExpression') {
				const expr = this.body[0];

				if (introStatementGenerators.length) {
					code
						.appendLeft(this.start, `{`)
						.prependRight(this.end, `${this.parent.getIndentation()}}`);

					code.prependRight(expr.start, `\n${indentation}return `);
					code.appendLeft(expr.end, `;\n`);
				} else if (transforms.arrow) {
					code.prependRight(expr.start, `{ return `);
					code.appendLeft(expr.end, `; }`);
				}
			} else if (introStatementGenerators.length) {
				code.prependRight(this.start, `{`).appendLeft(this.end, `}`);
			}
		}

		let start;
		if (isUseStrict(this.body[0])) {
			start = this.body[0].end;
		} else if (this.synthetic || this.parent.type === 'Root') {
			start = this.start;
		} else {
			start = this.start + 1;
		}

		let prefix = `\n${indentation}`;
		let suffix = ';';
		introStatementGenerators.forEach((fn, i) => {
			if (i === introStatementGenerators.length - 1) { suffix = `;\n`; }
			fn(start, prefix, suffix);
		});
	}

	declareIdentifier(name) {
		const id = this.scope.createIdentifier(name);
		this.createdDeclarations.push(id);
		return id;
	}

	transpileParameters(code, transforms, indentation, introStatementGenerators) {
		const params = this.parent.params;

		params.forEach(param => {
			if (
				param.type === 'AssignmentPattern' &&
				param.left.type === 'Identifier'
			) {
				if (transforms.defaultParameter) {
					introStatementGenerators.push((start, prefix, suffix) => {
						const lhs = `${prefix}if ( ${param.left.name} === void 0 ) ${
							param.left.name
						}`;

						code
							.prependRight(param.left.end, lhs)
							.move(param.left.end, param.right.end, start)
							.appendLeft(param.right.end, suffix);
					});
				}
			} else if (param.type === 'RestElement') {
				if (transforms.spreadRest) {
					introStatementGenerators.push((start, prefix, suffix) => {
						const penultimateParam = params[params.length - 2];

						if (penultimateParam) {
							code.remove(
								penultimateParam ? penultimateParam.end : param.start,
								param.end
							);
						} else {
							let start = param.start,
								end = param.end; // TODO https://gitlab.com/Rich-Harris/buble/issues/8

							while (/\s/.test(code.original[start - 1])) { start -= 1; }
							while (/\s/.test(code.original[end])) { end += 1; }

							code.remove(start, end);
						}

						const name = param.argument.name;
						const len = this.scope.createIdentifier('len');
						const count = params.length - 1;

						if (count) {
							code.prependRight(
								start,
								`${prefix}var ${name} = [], ${len} = arguments.length - ${
									count
								};\n${indentation}while ( ${len}-- > 0 ) ${name}[ ${
									len
								} ] = arguments[ ${len} + ${count} ]${suffix}`
							);
						} else {
							code.prependRight(
								start,
								`${prefix}var ${name} = [], ${len} = arguments.length;\n${
									indentation
								}while ( ${len}-- ) ${name}[ ${len} ] = arguments[ ${len} ]${
									suffix
								}`
							);
						}
					});
				}
			} else if (param.type !== 'Identifier') {
				if (transforms.parameterDestructuring) {
					const ref = this.scope.createIdentifier('ref');
					destructure(
						code,
						this.scope,
						param,
						ref,
						false,
						introStatementGenerators
					);
					code.prependRight(param.start, ref);
				}
			}
		});
	}

	transpileBlockScopedIdentifiers(code) {
		Object.keys(this.scope.blockScopedDeclarations).forEach(name => {
			const declarations = this.scope.blockScopedDeclarations[name];

			for (var i = 0, list = declarations; i < list.length; i += 1) {
				let declaration = list[i];

				let cont = false; // TODO implement proper continue...

				if (declaration.kind === 'for.let') {
					// special case
					const forStatement = declaration.node.findNearest('ForStatement');

					if (forStatement.shouldRewriteAsFunction) {
						const outerAlias = this.scope.createIdentifier(name);
						const innerAlias = forStatement.reassigned[name]
							? this.scope.createIdentifier(name)
							: name;

						declaration.name = outerAlias;
						code.overwrite(
							declaration.node.start,
							declaration.node.end,
							outerAlias,
							{ storeName: true }
						);

						forStatement.aliases[name] = {
							outer: outerAlias,
							inner: innerAlias
						};

						for (var i$1 = 0, list$1 = declaration.instances; i$1 < list$1.length; i$1 += 1) {
							const identifier = list$1[i$1];

							const alias = forStatement.body.contains(identifier)
								? innerAlias
								: outerAlias;

							if (name !== alias) {
								code.overwrite(identifier.start, identifier.end, alias, {
									storeName: true
								});
							}
						}

						cont = true;
					}
				}

				if (!cont) {
					const alias = this.scope.createIdentifier(name);

					if (name !== alias) {
						declaration.name = alias;
						code.overwrite(
							declaration.node.start,
							declaration.node.end,
							alias,
							{ storeName: true }
						);

						for (var i$2 = 0, list$2 = declaration.instances; i$2 < list$2.length; i$2 += 1) {
							const identifier = list$2[i$2];

							identifier.rewritten = true;
							code.overwrite(identifier.start, identifier.end, alias, {
								storeName: true
							});
						}
					}
				}
			}
		});
	}
}

function Program(source, ast, transforms, options) {
	this.type = 'Root';

	// options
	this.jsx = options.jsx || 'React.createElement';
	this.options = options;

	this.source = source;
	this.magicString = new MagicString$1(source);

	this.ast = ast;
	this.depth = 0;

	wrap((this.body = ast), this);
	this.body.__proto__ = BlockStatement.prototype;

	this.indentExclusionElements = [];
	this.body.initialise(transforms);

	this.indentExclusions = Object.create(null);
	for (var i = 0, list = this.indentExclusionElements; i < list.length; i += 1) {
		const node = list[i];

		for (let i = node.start; i < node.end; i += 1) {
			this.indentExclusions[i] = true;
		}
	}

	this.body.transpile(this.magicString, transforms);
}

Program.prototype = {
	export(options) {
		if ( options === void 0 ) { options = {}; }

		return {
			code: this.magicString.toString(),
			map: this.magicString.generateMap({
				file: options.file,
				source: options.source,
				includeContent: options.includeContent !== false
			})
		};
	},

	findNearest() {
		return null;
	},

	findScope() {
		return null;
	}
};

const matrix = {
	chrome: {
		    48: 0b01001111011111100111110101111101,
		    49: 0b01001111111111100111111111111111,
		    50: 0b01011111111111100111111111111111,
		    51: 0b01011111111111100111111111111111,
		    52: 0b01111111111111100111111111111111
	},
	firefox: {
		    43: 0b01000111111101100000110111011101,
		    44: 0b01000111111101100000110111011101,
		    45: 0b01000111111101100000110111011101,
		    46: 0b01010111111111100000110111011101,
		    47: 0b01010111111111100111111111011111,
		    48: 0b01010111111111100111111111011111
	},
	safari: {
		     8: 0b01000000000000000000000000000000,
		     9: 0b01001111001101100000011101011110
	},
	ie: {
		     8: 0b00000000000000000000000000000000,
		     9: 0b01000000000000000000000000000000,
		    10: 0b01000000000000000000000000000000,
		    11: 0b01000000000000000111000001100000
	},
	edge: {
		    12: 0b01011110110111100011010001011101,
		    13: 0b01011111110111100011110001011111
	},
	node: {
		'0.10': 0b01000000000101000000000001000000,
		'0.12': 0b01000001000101000000010001000100,
		     4: 0b01001111000111100111111001111111,
		     5: 0b01001111000111100111111001111111,
		     6: 0b01011111111111100111111111111111
	}
};

const features = [
	'arrow',
	'classes',
	'collections',
	'computedProperty',
	'conciseMethodProperty',
	'constLoop',
	'constRedef',
	'defaultParameter',
	'destructuring',
	'extendNatives',
	'forOf',
	'generator',
	'letConst',
	'letLoop',
	'letLoopScope',
	'moduleExport',
	'moduleImport',
	'numericLiteral',
	'objectProto',
	'objectSuper',
	'oldOctalLiteral',
	'parameterDestructuring',
	'spreadRest',
	'stickyRegExp',
	'symbol',
	'templateString',
	'unicodeEscape',
	'unicodeIdentifier',
	'unicodeRegExp',

	// ES2016
	'exponentiation',

	// additional transforms, not from
	// https://featuretests.io
	'reservedProperties',

	'trailingFunctionCommas'
];

const ref = [inject$1, inject].reduce(
	(final, plugin) => plugin(final),
	acorn
);
var parse = ref.parse;

const dangerousTransforms = ['dangerousTaggedTemplateString', 'dangerousForOf'];

function target(target) {
	const targets = Object.keys(target);
	let bitmask = targets.length
		? 0b11111111111111111111111111111111
		: 0b01000000000000000000000000000000;

	Object.keys(target).forEach(environment => {
		const versions = matrix[environment];
		if (!versions)
			{ throw new Error(
				`Unknown environment '${environment}'. Please raise an issue at https://github.com/Rich-Harris/buble/issues`
			); }

		const targetVersion = target[environment];
		if (!(targetVersion in versions))
			{ throw new Error(
				`Support data exists for the following versions of ${environment}: ${Object.keys(
					versions
				).join(
					', '
				)}. Please raise an issue at https://github.com/Rich-Harris/buble/issues`
			); }
		const support = versions[targetVersion];

		bitmask &= support;
	});

	let transforms = Object.create(null);
	features.forEach((name, i) => {
		transforms[name] = !(bitmask & (1 << i));
	});

	dangerousTransforms.forEach(name => {
		transforms[name] = false;
	});

	return transforms;
}

function transform(source, options) {
	if ( options === void 0 ) { options = {}; }

	let ast;
	let jsx = null;

	try {
		ast = parse(source, {
			ecmaVersion: 8,
			preserveParens: true,
			sourceType: 'module',
			onComment: (block, text) => {
				if (!jsx) {
					let match = /@jsx\s+([^\s]+)/.exec(text);
					if (match) { jsx = match[1]; }
				}
			},
			plugins: {
				jsx: true,
				objectSpread: true
			}
		});
		options.jsx = jsx || options.jsx;
	} catch (err) {
		err.snippet = getSnippet(source, err.loc);
		err.toString = () => `${err.name}: ${err.message}\n${err.snippet}`;
		throw err;
	}

	let transforms = target(options.target || {});
	Object.keys(options.transforms || {}).forEach(name => {
		if (name === 'modules') {
			if (!('moduleImport' in options.transforms))
				{ transforms.moduleImport = options.transforms.modules; }
			if (!('moduleExport' in options.transforms))
				{ transforms.moduleExport = options.transforms.modules; }
			return;
		}

		if (!(name in transforms)) { throw new Error(`Unknown transform '${name}'`); }
		transforms[name] = options.transforms[name];
	});

	return new Program(source, ast, transforms, options).export(options);
}

/*!
 * filename-regex <https://github.com/regexps/filename-regex>
 *
 * Copyright (c) 2014-2015, Jon Schlinkert
 * Licensed under the MIT license.
 */

var filenameRegex = function filenameRegex() {
  return /([^\\\/]+)$/;
};

/*!
 * arr-flatten <https://github.com/jonschlinkert/arr-flatten>
 *
 * Copyright (c) 2014-2017, Jon Schlinkert.
 * Released under the MIT License.
 */

var arrFlatten = function (arr) {
  return flat(arr, []);
};

function flat(arr, res) {
  var i = 0, cur;
  var len = arr.length;
  for (; i < len; i++) {
    cur = arr[i];
    Array.isArray(cur) ? flat(cur, res) : res.push(cur);
  }
  return res;
}

var slice = [].slice;

/**
 * Return the difference between the first array and
 * additional arrays.
 *
 * ```js
 * var diff = require('{%= name %}');
 *
 * var a = ['a', 'b', 'c', 'd'];
 * var b = ['b', 'c'];
 *
 * console.log(diff(a, b))
 * //=> ['a', 'd']
 * ```
 *
 * @param  {Array} `a`
 * @param  {Array} `b`
 * @return {Array}
 * @api public
 */

function diff(arr, arrays) {
  var argsLen = arguments.length;
  var len = arr.length, i = -1;
  var res = [], arrays;

  if (argsLen === 1) {
    return arr;
  }

  if (argsLen > 2) {
    arrays = arrFlatten(slice.call(arguments, 1));
  }

  while (++i < len) {
    if (!~arrays.indexOf(arr[i])) {
      res.push(arr[i]);
    }
  }
  return res;
}

/**
 * Expose `diff`
 */

var arrDiff = diff;

/*!
 * array-unique <https://github.com/jonschlinkert/array-unique>
 *
 * Copyright (c) 2014-2015, Jon Schlinkert.
 * Licensed under the MIT License.
 */

var arrayUnique = function unique(arr) {
  if (!Array.isArray(arr)) {
    throw new TypeError('array-unique expects an array.');
  }

  var len = arr.length;
  var i = -1;

  while (i++ < len) {
    var j = i + 1;

    for (; j < arr.length; ++j) {
      if (arr[i] === arr[j]) {
        arr.splice(j--, 1);
      }
    }
  }
  return arr;
};

var toString$2 = {}.toString;

var isarray = Array.isArray || function (arr) {
  return toString$2.call(arr) == '[object Array]';
};

var isobject = function isObject(val) {
  return val != null && typeof val === 'object' && isarray(val) === false;
};

/*!
 * Determine if an object is a Buffer
 *
 * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * @license  MIT
 */

// The _isBuffer check is for Safari 5-7 support, because it's missing
// Object.prototype.constructor. Remove this eventually
var isBuffer_1 = function (obj) {
  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
};

function isBuffer (obj) {
  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
}

// For Node v0.10 support. Remove this eventually.
function isSlowBuffer (obj) {
  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
}

var toString$3 = Object.prototype.toString;

/**
 * Get the native `typeof` a value.
 *
 * @param  {*} `val`
 * @return {*} Native javascript type
 */

var kindOf = function kindOf(val) {
  // primitivies
  if (typeof val === 'undefined') {
    return 'undefined';
  }
  if (val === null) {
    return 'null';
  }
  if (val === true || val === false || val instanceof Boolean) {
    return 'boolean';
  }
  if (typeof val === 'string' || val instanceof String) {
    return 'string';
  }
  if (typeof val === 'number' || val instanceof Number) {
    return 'number';
  }

  // functions
  if (typeof val === 'function' || val instanceof Function) {
    return 'function';
  }

  // array
  if (typeof Array.isArray !== 'undefined' && Array.isArray(val)) {
    return 'array';
  }

  // check for instances of RegExp and Date before calling `toString`
  if (val instanceof RegExp) {
    return 'regexp';
  }
  if (val instanceof Date) {
    return 'date';
  }

  // other objects
  var type = toString$3.call(val);

  if (type === '[object RegExp]') {
    return 'regexp';
  }
  if (type === '[object Date]') {
    return 'date';
  }
  if (type === '[object Arguments]') {
    return 'arguments';
  }
  if (type === '[object Error]') {
    return 'error';
  }

  // buffer
  if (isBuffer_1(val)) {
    return 'buffer';
  }

  // es6: Map, WeakMap, Set, WeakSet
  if (type === '[object Set]') {
    return 'set';
  }
  if (type === '[object WeakSet]') {
    return 'weakset';
  }
  if (type === '[object Map]') {
    return 'map';
  }
  if (type === '[object WeakMap]') {
    return 'weakmap';
  }
  if (type === '[object Symbol]') {
    return 'symbol';
  }

  // typed arrays
  if (type === '[object Int8Array]') {
    return 'int8array';
  }
  if (type === '[object Uint8Array]') {
    return 'uint8array';
  }
  if (type === '[object Uint8ClampedArray]') {
    return 'uint8clampedarray';
  }
  if (type === '[object Int16Array]') {
    return 'int16array';
  }
  if (type === '[object Uint16Array]') {
    return 'uint16array';
  }
  if (type === '[object Int32Array]') {
    return 'int32array';
  }
  if (type === '[object Uint32Array]') {
    return 'uint32array';
  }
  if (type === '[object Float32Array]') {
    return 'float32array';
  }
  if (type === '[object Float64Array]') {
    return 'float64array';
  }

  // must be a plain object
  return 'object';
};

var isNumber$1 = function isNumber(num) {
  var type = kindOf(num);
  if (type !== 'number' && type !== 'string') {
    return false;
  }
  var n = +num;
  return (n - n + 1) >= 0 && num !== '';
};

var toString$4 = Object.prototype.toString;

/**
 * Get the native `typeof` a value.
 *
 * @param  {*} `val`
 * @return {*} Native javascript type
 */

var kindOf$2 = function kindOf(val) {
  // primitivies
  if (typeof val === 'undefined') {
    return 'undefined';
  }
  if (val === null) {
    return 'null';
  }
  if (val === true || val === false || val instanceof Boolean) {
    return 'boolean';
  }
  if (typeof val === 'string' || val instanceof String) {
    return 'string';
  }
  if (typeof val === 'number' || val instanceof Number) {
    return 'number';
  }

  // functions
  if (typeof val === 'function' || val instanceof Function) {
    return 'function';
  }

  // array
  if (typeof Array.isArray !== 'undefined' && Array.isArray(val)) {
    return 'array';
  }

  // check for instances of RegExp and Date before calling `toString`
  if (val instanceof RegExp) {
    return 'regexp';
  }
  if (val instanceof Date) {
    return 'date';
  }

  // other objects
  var type = toString$4.call(val);

  if (type === '[object RegExp]') {
    return 'regexp';
  }
  if (type === '[object Date]') {
    return 'date';
  }
  if (type === '[object Arguments]') {
    return 'arguments';
  }
  if (type === '[object Error]') {
    return 'error';
  }

  // buffer
  if (isBuffer_1(val)) {
    return 'buffer';
  }

  // es6: Map, WeakMap, Set, WeakSet
  if (type === '[object Set]') {
    return 'set';
  }
  if (type === '[object WeakSet]') {
    return 'weakset';
  }
  if (type === '[object Map]') {
    return 'map';
  }
  if (type === '[object WeakMap]') {
    return 'weakmap';
  }
  if (type === '[object Symbol]') {
    return 'symbol';
  }

  // typed arrays
  if (type === '[object Int8Array]') {
    return 'int8array';
  }
  if (type === '[object Uint8Array]') {
    return 'uint8array';
  }
  if (type === '[object Uint8ClampedArray]') {
    return 'uint8clampedarray';
  }
  if (type === '[object Int16Array]') {
    return 'int16array';
  }
  if (type === '[object Uint16Array]') {
    return 'uint16array';
  }
  if (type === '[object Int32Array]') {
    return 'int32array';
  }
  if (type === '[object Uint32Array]') {
    return 'uint32array';
  }
  if (type === '[object Float32Array]') {
    return 'float32array';
  }
  if (type === '[object Float64Array]') {
    return 'float64array';
  }

  // must be a plain object
  return 'object';
};

var isNumber$3 = function isNumber(num) {
  var type = kindOf$2(num);

  if (type === 'string') {
    if (!num.trim()) { return false; }
  } else if (type !== 'number') {
    return false;
  }

  return (num - num + 1) >= 0;
};

var toString$5 = Object.prototype.toString;

/**
 * Get the native `typeof` a value.
 *
 * @param  {*} `val`
 * @return {*} Native javascript type
 */

var kindOf$4 = function kindOf(val) {
  // primitivies
  if (typeof val === 'undefined') {
    return 'undefined';
  }
  if (val === null) {
    return 'null';
  }
  if (val === true || val === false || val instanceof Boolean) {
    return 'boolean';
  }
  if (typeof val === 'string' || val instanceof String) {
    return 'string';
  }
  if (typeof val === 'number' || val instanceof Number) {
    return 'number';
  }

  // functions
  if (typeof val === 'function' || val instanceof Function) {
    return 'function';
  }

  // array
  if (typeof Array.isArray !== 'undefined' && Array.isArray(val)) {
    return 'array';
  }

  // check for instances of RegExp and Date before calling `toString`
  if (val instanceof RegExp) {
    return 'regexp';
  }
  if (val instanceof Date) {
    return 'date';
  }

  // other objects
  var type = toString$5.call(val);

  if (type === '[object RegExp]') {
    return 'regexp';
  }
  if (type === '[object Date]') {
    return 'date';
  }
  if (type === '[object Arguments]') {
    return 'arguments';
  }
  if (type === '[object Error]') {
    return 'error';
  }
  if (type === '[object Promise]') {
    return 'promise';
  }

  // buffer
  if (isBuffer_1(val)) {
    return 'buffer';
  }

  // es6: Map, WeakMap, Set, WeakSet
  if (type === '[object Set]') {
    return 'set';
  }
  if (type === '[object WeakSet]') {
    return 'weakset';
  }
  if (type === '[object Map]') {
    return 'map';
  }
  if (type === '[object WeakMap]') {
    return 'weakmap';
  }
  if (type === '[object Symbol]') {
    return 'symbol';
  }

  // typed arrays
  if (type === '[object Int8Array]') {
    return 'int8array';
  }
  if (type === '[object Uint8Array]') {
    return 'uint8array';
  }
  if (type === '[object Uint8ClampedArray]') {
    return 'uint8clampedarray';
  }
  if (type === '[object Int16Array]') {
    return 'int16array';
  }
  if (type === '[object Uint16Array]') {
    return 'uint16array';
  }
  if (type === '[object Int32Array]') {
    return 'int32array';
  }
  if (type === '[object Uint32Array]') {
    return 'uint32array';
  }
  if (type === '[object Float32Array]') {
    return 'float32array';
  }
  if (type === '[object Float64Array]') {
    return 'float64array';
  }

  // must be a plain object
  return 'object';
};

/**
 * Expose `randomatic`
 */

var randomatic_1 = randomatic;

/**
 * Available mask characters
 */

var type = {
  lower: 'abcdefghijklmnopqrstuvwxyz',
  upper: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ',
  number: '0123456789',
  special: '~!@#$%^&()_+-={}[];\',.'
};

type.all = type.lower + type.upper + type.number + type.special;

/**
 * Generate random character sequences of a specified `length`,
 * based on the given `pattern`.
 *
 * @param {String} `pattern` The pattern to use for generating the random string.
 * @param {String} `length` The length of the string to generate.
 * @param {String} `options`
 * @return {String}
 * @api public
 */

function randomatic(pattern, length, options) {
  if (typeof pattern === 'undefined') {
    throw new Error('randomatic expects a string or number.');
  }

  var custom = false;
  if (arguments.length === 1) {
    if (typeof pattern === 'string') {
      length = pattern.length;

    } else if (isNumber$3(pattern)) {
      options = {}; length = pattern; pattern = '*';
    }
  }

  if (kindOf$4(length) === 'object' && length.hasOwnProperty('chars')) {
    options = length;
    pattern = options.chars;
    length = pattern.length;
    custom = true;
  }

  var opts = options || {};
  var mask = '';
  var res = '';

  // Characters to be used
  if (pattern.indexOf('?') !== -1) { mask += opts.chars; }
  if (pattern.indexOf('a') !== -1) { mask += type.lower; }
  if (pattern.indexOf('A') !== -1) { mask += type.upper; }
  if (pattern.indexOf('0') !== -1) { mask += type.number; }
  if (pattern.indexOf('!') !== -1) { mask += type.special; }
  if (pattern.indexOf('*') !== -1) { mask += type.all; }
  if (custom) { mask += pattern; }

  while (length--) {
    res += mask.charAt(parseInt(Math.random() * mask.length, 10));
  }
  return res;
}

/*!
 * repeat-string <https://github.com/jonschlinkert/repeat-string>
 *
 * Copyright (c) 2014-2015, Jon Schlinkert.
 * Licensed under the MIT License.
 */

/**
 * Results cache
 */

var res = '';
var cache;

/**
 * Expose `repeat`
 */

var repeatString = repeat$1;

/**
 * Repeat the given `string` the specified `number`
 * of times.
 *
 * **Example:**
 *
 * ```js
 * var repeat = require('repeat-string');
 * repeat('A', 5);
 * //=> AAAAA
 * ```
 *
 * @param {String} `string` The string to repeat
 * @param {Number} `number` The number of times to repeat the string
 * @return {String} Repeated string
 * @api public
 */

function repeat$1(str, num) {
  if (typeof str !== 'string') {
    throw new TypeError('expected a string');
  }

  // cover common, quick use cases
  if (num === 1) { return str; }
  if (num === 2) { return str + str; }

  var max = str.length * num;
  if (cache !== str || typeof cache === 'undefined') {
    cache = str;
    res = '';
  } else if (res.length >= max) {
    return res.substr(0, max);
  }

  while (max > res.length && num > 1) {
    if (num & 1) {
      res += str;
    }

    num >>= 1;
    str += str;
  }

  res += str;
  res = res.substr(0, max);
  return res;
}

/*!
 * repeat-element <https://github.com/jonschlinkert/repeat-element>
 *
 * Copyright (c) 2015 Jon Schlinkert.
 * Licensed under the MIT license.
 */

var repeatElement = function repeat(ele, num) {
  var arr = new Array(num);

  for (var i = 0; i < num; i++) {
    arr[i] = ele;
  }

  return arr;
};

/**
 * Expose `fillRange`
 */

var fillRange_1 = fillRange;

/**
 * Return a range of numbers or letters.
 *
 * @param  {String} `a` Start of the range
 * @param  {String} `b` End of the range
 * @param  {String} `step` Increment or decrement to use.
 * @param  {Function} `fn` Custom function to modify each element in the range.
 * @return {Array}
 */

function fillRange(a, b, step, options, fn) {
  if (a == null || b == null) {
    throw new Error('fill-range expects the first and second args to be strings.');
  }

  if (typeof step === 'function') {
    fn = step; options = {}; step = null;
  }

  if (typeof options === 'function') {
    fn = options; options = {};
  }

  if (isobject(step)) {
    options = step; step = '';
  }

  var expand, regex = false, sep$$1 = '';
  var opts = options || {};

  if (typeof opts.silent === 'undefined') {
    opts.silent = true;
  }

  step = step || opts.step;

  // store a ref to unmodified arg
  var origA = a, origB = b;

  b = (b.toString() === '-0') ? 0 : b;

  if (opts.optimize || opts.makeRe) {
    step = step ? (step += '~') : step;
    expand = true;
    regex = true;
    sep$$1 = '~';
  }

  // handle special step characters
  if (typeof step === 'string') {
    var match = stepRe().exec(step);

    if (match) {
      var i = match.index;
      var m = match[0];

      // repeat string
      if (m === '+') {
        return repeatElement(a, b);

      // randomize a, `b` times
      } else if (m === '?') {
        return [randomatic_1(a, b)];

      // expand right, no regex reduction
      } else if (m === '>') {
        step = step.substr(0, i) + step.substr(i + 1);
        expand = true;

      // expand to an array, or if valid create a reduced
      // string for a regex logic `or`
      } else if (m === '|') {
        step = step.substr(0, i) + step.substr(i + 1);
        expand = true;
        regex = true;
        sep$$1 = m;

      // expand to an array, or if valid create a reduced
      // string for a regex range
      } else if (m === '~') {
        step = step.substr(0, i) + step.substr(i + 1);
        expand = true;
        regex = true;
        sep$$1 = m;
      }
    } else if (!isNumber$1(step)) {
      if (!opts.silent) {
        throw new TypeError('fill-range: invalid step.');
      }
      return null;
    }
  }

  if (/[.&*()[\]^%$#@!]/.test(a) || /[.&*()[\]^%$#@!]/.test(b)) {
    if (!opts.silent) {
      throw new RangeError('fill-range: invalid range arguments.');
    }
    return null;
  }

  // has neither a letter nor number, or has both letters and numbers
  // this needs to be after the step logic
  if (!noAlphaNum(a) || !noAlphaNum(b) || hasBoth(a) || hasBoth(b)) {
    if (!opts.silent) {
      throw new RangeError('fill-range: invalid range arguments.');
    }
    return null;
  }

  // validate arguments
  var isNumA = isNumber$1(zeros(a));
  var isNumB = isNumber$1(zeros(b));

  if ((!isNumA && isNumB) || (isNumA && !isNumB)) {
    if (!opts.silent) {
      throw new TypeError('fill-range: first range argument is incompatible with second.');
    }
    return null;
  }

  // by this point both are the same, so we
  // can use A to check going forward.
  var isNum = isNumA;
  var num = formatStep(step);

  // is the range alphabetical? or numeric?
  if (isNum) {
    // if numeric, coerce to an integer
    a = +a; b = +b;
  } else {
    // otherwise, get the charCode to expand alpha ranges
    a = a.charCodeAt(0);
    b = b.charCodeAt(0);
  }

  // is the pattern descending?
  var isDescending = a > b;

  // don't create a character class if the args are < 0
  if (a < 0 || b < 0) {
    expand = false;
    regex = false;
  }

  // detect padding
  var padding = isPadded(origA, origB);
  var res, pad, arr = [];
  var ii = 0;

  // character classes, ranges and logical `or`
  if (regex) {
    if (shouldExpand(a, b, num, isNum, padding, opts)) {
      // make sure the correct separator is used
      if (sep$$1 === '|' || sep$$1 === '~') {
        sep$$1 = detectSeparator(a, b, num, isNum, isDescending);
      }
      return wrap$2([origA, origB], sep$$1, opts);
    }
  }

  while (isDescending ? (a >= b) : (a <= b)) {
    if (padding && isNum) {
      pad = padding(a);
    }

    // custom function
    if (typeof fn === 'function') {
      res = fn(a, isNum, pad, ii++);

    // letters
    } else if (!isNum) {
      if (regex && isInvalidChar(a)) {
        res = null;
      } else {
        res = String.fromCharCode(a);
      }

    // numbers
    } else {
      res = formatPadding(a, pad);
    }

    // add result to the array, filtering any nulled values
    if (res !== null) { arr.push(res); }

    // increment or decrement
    if (isDescending) {
      a -= num;
    } else {
      a += num;
    }
  }

  // now that the array is expanded, we need to handle regex
  // character classes, ranges or logical `or` that wasn't
  // already handled before the loop
  if ((regex || expand) && !opts.noexpand) {
    // make sure the correct separator is used
    if (sep$$1 === '|' || sep$$1 === '~') {
      sep$$1 = detectSeparator(a, b, num, isNum, isDescending);
    }
    if (arr.length === 1 || a < 0 || b < 0) { return arr; }
    return wrap$2(arr, sep$$1, opts);
  }

  return arr;
}

/**
 * Wrap the string with the correct regex
 * syntax.
 */

function wrap$2(arr, sep$$1, opts) {
  if (sep$$1 === '~') { sep$$1 = '-'; }
  var str = arr.join(sep$$1);
  var pre = opts && opts.regexPrefix;

  // regex logical `or`
  if (sep$$1 === '|') {
    str = pre ? pre + str : str;
    str = '(' + str + ')';
  }

  // regex character class
  if (sep$$1 === '-') {
    str = (pre && pre === '^')
      ? pre + str
      : str;
    str = '[' + str + ']';
  }
  return [str];
}

/**
 * Check for invalid characters
 */

function isCharClass(a, b, step, isNum, isDescending) {
  if (isDescending) { return false; }
  if (isNum) { return a <= 9 && b <= 9; }
  if (a < b) { return step === 1; }
  return false;
}

/**
 * Detect the correct separator to use
 */

function shouldExpand(a, b, num, isNum, padding, opts) {
  if (isNum && (a > 9 || b > 9)) { return false; }
  return !padding && num === 1 && a < b;
}

/**
 * Detect the correct separator to use
 */

function detectSeparator(a, b, step, isNum, isDescending) {
  var isChar = isCharClass(a, b, step, isNum, isDescending);
  if (!isChar) {
    return '|';
  }
  return '~';
}

/**
 * Correctly format the step based on type
 */

function formatStep(step) {
  return Math.abs(step >> 0) || 1;
}

/**
 * Format padding, taking leading `-` into account
 */

function formatPadding(ch, pad) {
  var res = pad ? pad + ch : ch;
  if (pad && ch.toString().charAt(0) === '-') {
    res = '-' + pad + ch.toString().substr(1);
  }
  return res.toString();
}

/**
 * Check for invalid characters
 */

function isInvalidChar(str) {
  var ch = toStr(str);
  return ch === '\\'
    || ch === '['
    || ch === ']'
    || ch === '^'
    || ch === '('
    || ch === ')'
    || ch === '`';
}

/**
 * Convert to a string from a charCode
 */

function toStr(ch) {
  return String.fromCharCode(ch);
}


/**
 * Step regex
 */

function stepRe() {
  return /\?|>|\||\+|\~/g;
}

/**
 * Return true if `val` has either a letter
 * or a number
 */

function noAlphaNum(val) {
  return /[a-z0-9]/i.test(val);
}

/**
 * Return true if `val` has both a letter and
 * a number (invalid)
 */

function hasBoth(val) {
  return /[a-z][0-9]|[0-9][a-z]/i.test(val);
}

/**
 * Normalize zeros for checks
 */

function zeros(val) {
  if (/^-*0+$/.test(val.toString())) {
    return '0';
  }
  return val;
}

/**
 * Return true if `val` has leading zeros,
 * or a similar valid pattern.
 */

function hasZeros(val) {
  return /[^.]\.|^-*0+[0-9]/.test(val);
}

/**
 * If the string is padded, returns a curried function with
 * the a cached padding string, or `false` if no padding.
 *
 * @param  {*} `origA` String or number.
 * @return {String|Boolean}
 */

function isPadded(origA, origB) {
  if (hasZeros(origA) || hasZeros(origB)) {
    var alen = length(origA);
    var blen = length(origB);

    var len = alen >= blen
      ? alen
      : blen;

    return function (a) {
      return repeatString('0', len - length(a));
    };
  }
  return false;
}

/**
 * Get the string length of `val`
 */

function length(val) {
  return val.toString().length;
}

var expandRange = function expandRange(str, options, fn) {
  if (typeof str !== 'string') {
    throw new TypeError('expand-range expects a string.');
  }

  if (typeof options === 'function') {
    fn = options;
    options = {};
  }

  if (typeof options === 'boolean') {
    options = {};
    options.makeRe = true;
  }

  // create arguments to pass to fill-range
  var opts = options || {};
  var args = str.split('..');
  var len = args.length;
  if (len > 3) { return str; }

  // if only one argument, it can't expand so return it
  if (len === 1) { return args; }

  // if `true`, tell fill-range to regexify the string
  if (typeof fn === 'boolean' && fn === true) {
    opts.makeRe = true;
  }

  args.push(opts);
  return fillRange_1.apply(null, args.concat(fn));
};

/*!
 * preserve <https://github.com/jonschlinkert/preserve>
 *
 * Copyright (c) 2014-2015, Jon Schlinkert.
 * Licensed under the MIT license.
 */

/**
 * Replace tokens in `str` with a temporary, heuristic placeholder.
 *
 * ```js
 * tokens.before('{a\\,b}');
 * //=> '{__ID1__}'
 * ```
 *
 * @param  {String} `str`
 * @return {String} String with placeholders.
 * @api public
 */

var before = function before(str, re) {
  return str.replace(re, function (match) {
    var id = randomize$1();
    cache$1[id] = match;
    return '__ID' + id + '__';
  });
};

/**
 * Replace placeholders in `str` with original tokens.
 *
 * ```js
 * tokens.after('{__ID1__}');
 * //=> '{a\\,b}'
 * ```
 *
 * @param  {String} `str` String with placeholders
 * @return {String} `str` String with original tokens.
 * @api public
 */

var after = function after(str) {
  return str.replace(/__ID(.{5})__/g, function (_, id) {
    return cache$1[id];
  });
};

function randomize$1() {
  return Math.random().toString().slice(2, 7);
}

var cache$1 = {};

var preserve = {
	before: before,
	after: after
};

/**
 * Module dependencies
 */





/**
 * Expose `braces`
 */

var braces_1 = function(str, options) {
  if (typeof str !== 'string') {
    throw new Error('braces expects a string');
  }
  return braces(str, options);
};

/**
 * Expand `{foo,bar}` or `{1..5}` braces in the
 * given `string`.
 *
 * @param  {String} `str`
 * @param  {Array} `arr`
 * @param  {Object} `options`
 * @return {Array}
 */

function braces(str, arr, options) {
  if (str === '') {
    return [];
  }

  if (!Array.isArray(arr)) {
    options = arr;
    arr = [];
  }

  var opts = options || {};
  arr = arr || [];

  if (typeof opts.nodupes === 'undefined') {
    opts.nodupes = true;
  }

  var fn = opts.fn;
  var es6;

  if (typeof opts === 'function') {
    fn = opts;
    opts = {};
  }

  if (!(patternRe instanceof RegExp)) {
    patternRe = patternRegex();
  }

  var matches = str.match(patternRe) || [];
  var m = matches[0];

  switch(m) {
    case '\\,':
      return escapeCommas(str, arr, opts);
    case '\\.':
      return escapeDots(str, arr, opts);
    case '\/.':
      return escapePaths(str, arr, opts);
    case ' ':
      return splitWhitespace(str);
    case '{,}':
      return exponential(str, opts, braces);
    case '{}':
      return emptyBraces(str, arr, opts);
    case '\\{':
    case '\\}':
      return escapeBraces(str, arr, opts);
    case '${':
      if (!/\{[^{]+\{/.test(str)) {
        return arr.concat(str);
      } else {
        es6 = true;
        str = preserve.before(str, es6Regex());
      }
  }

  if (!(braceRe instanceof RegExp)) {
    braceRe = braceRegex();
  }

  var match = braceRe.exec(str);
  if (match == null) {
    return [str];
  }

  var outter = match[1];
  var inner = match[2];
  if (inner === '') { return [str]; }

  var segs, segsLength;

  if (inner.indexOf('..') !== -1) {
    segs = expandRange(inner, opts, fn) || inner.split(',');
    segsLength = segs.length;

  } else if (inner[0] === '"' || inner[0] === '\'') {
    return arr.concat(str.split(/['"]/).join(''));

  } else {
    segs = inner.split(',');
    if (opts.makeRe) {
      return braces(str.replace(outter, wrap$1(segs, '|')), opts);
    }

    segsLength = segs.length;
    if (segsLength === 1 && opts.bash) {
      segs[0] = wrap$1(segs[0], '\\');
    }
  }

  var len = segs.length;
  var i = 0, val;

  while (len--) {
    var path$$1 = segs[i++];

    if (/(\.[^.\/])/.test(path$$1)) {
      if (segsLength > 1) {
        return segs;
      } else {
        return [str];
      }
    }

    val = splice(str, outter, path$$1);

    if (/\{[^{}]+?\}/.test(val)) {
      arr = braces(val, arr, opts);
    } else if (val !== '') {
      if (opts.nodupes && arr.indexOf(val) !== -1) { continue; }
      arr.push(es6 ? preserve.after(val) : val);
    }
  }

  if (opts.strict) { return filter$1(arr, filterEmpty); }
  return arr;
}

/**
 * Expand exponential ranges
 *
 *   `a{,}{,}` => ['a', 'a', 'a', 'a']
 */

function exponential(str, options, fn) {
  if (typeof options === 'function') {
    fn = options;
    options = null;
  }

  var opts = options || {};
  var esc = '__ESC_EXP__';
  var exp = 0;
  var res;

  var parts = str.split('{,}');
  if (opts.nodupes) {
    return fn(parts.join(''), opts);
  }

  exp = parts.length - 1;
  res = fn(parts.join(esc), opts);
  var len = res.length;
  var arr = [];
  var i = 0;

  while (len--) {
    var ele = res[i++];
    var idx = ele.indexOf(esc);

    if (idx === -1) {
      arr.push(ele);

    } else {
      ele = ele.split('__ESC_EXP__').join('');
      if (!!ele && opts.nodupes !== false) {
        arr.push(ele);

      } else {
        var num = Math.pow(2, exp);
        arr.push.apply(arr, repeatElement(ele, num));
      }
    }
  }
  return arr;
}

/**
 * Wrap a value with parens, brackets or braces,
 * based on the given character/separator.
 *
 * @param  {String|Array} `val`
 * @param  {String} `ch`
 * @return {String}
 */

function wrap$1(val, ch) {
  if (ch === '|') {
    return '(' + val.join(ch) + ')';
  }
  if (ch === ',') {
    return '{' + val.join(ch) + '}';
  }
  if (ch === '-') {
    return '[' + val.join(ch) + ']';
  }
  if (ch === '\\') {
    return '\\{' + val + '\\}';
  }
}

/**
 * Handle empty braces: `{}`
 */

function emptyBraces(str, arr, opts) {
  return braces(str.split('{}').join('\\{\\}'), arr, opts);
}

/**
 * Filter out empty-ish values
 */

function filterEmpty(ele) {
  return !!ele && ele !== '\\';
}

/**
 * Handle patterns with whitespace
 */

function splitWhitespace(str) {
  var segs = str.split(' ');
  var len = segs.length;
  var res = [];
  var i = 0;

  while (len--) {
    res.push.apply(res, braces(segs[i++]));
  }
  return res;
}

/**
 * Handle escaped braces: `\\{foo,bar}`
 */

function escapeBraces(str, arr, opts) {
  if (!/\{[^{]+\{/.test(str)) {
    return arr.concat(str.split('\\').join(''));
  } else {
    str = str.split('\\{').join('__LT_BRACE__');
    str = str.split('\\}').join('__RT_BRACE__');
    return map(braces(str, arr, opts), function(ele) {
      ele = ele.split('__LT_BRACE__').join('{');
      return ele.split('__RT_BRACE__').join('}');
    });
  }
}

/**
 * Handle escaped dots: `{1\\.2}`
 */

function escapeDots(str, arr, opts) {
  if (!/[^\\]\..+\\\./.test(str)) {
    return arr.concat(str.split('\\').join(''));
  } else {
    str = str.split('\\.').join('__ESC_DOT__');
    return map(braces(str, arr, opts), function(ele) {
      return ele.split('__ESC_DOT__').join('.');
    });
  }
}

/**
 * Handle escaped dots: `{1\\.2}`
 */

function escapePaths(str, arr, opts) {
  str = str.split('\/.').join('__ESC_PATH__');
  return map(braces(str, arr, opts), function(ele) {
    return ele.split('__ESC_PATH__').join('\/.');
  });
}

/**
 * Handle escaped commas: `{a\\,b}`
 */

function escapeCommas(str, arr, opts) {
  if (!/\w,/.test(str)) {
    return arr.concat(str.split('\\').join(''));
  } else {
    str = str.split('\\,').join('__ESC_COMMA__');
    return map(braces(str, arr, opts), function(ele) {
      return ele.split('__ESC_COMMA__').join(',');
    });
  }
}

/**
 * Regex for common patterns
 */

function patternRegex() {
  return /\${|( (?=[{,}])|(?=[{,}]) )|{}|{,}|\\,(?=.*[{}])|\/\.(?=.*[{}])|\\\.(?={)|\\{|\\}/;
}

/**
 * Braces regex.
 */

function braceRegex() {
  return /.*(\\?\{([^}]+)\})/;
}

/**
 * es6 delimiter regex.
 */

function es6Regex() {
  return /\$\{([^}]+)\}/;
}

var braceRe;
var patternRe;

/**
 * Faster alternative to `String.replace()` when the
 * index of the token to be replaces can't be supplied
 */

function splice(str, token, replacement) {
  var i = str.indexOf(token);
  return str.substr(0, i) + replacement
    + str.substr(i + token.length);
}

/**
 * Fast array map
 */

function map(arr, fn) {
  if (arr == null) {
    return [];
  }

  var len = arr.length;
  var res = new Array(len);
  var i = -1;

  while (++i < len) {
    res[i] = fn(arr[i], i, arr);
  }

  return res;
}

/**
 * Fast array filter
 */

function filter$1(arr, cb) {
  if (arr == null) { return []; }
  if (typeof cb !== 'function') {
    throw new TypeError('braces: filter expects a callback function.');
  }

  var len = arr.length;
  var res = arr.slice();
  var i = 0;

  while (len--) {
    if (!cb(arr[len], i++)) {
      res.splice(len, 1);
    }
  }
  return res;
}

/*!
 * is-posix-bracket <https://github.com/jonschlinkert/is-posix-bracket>
 *
 * Copyright (c) 2015-2016, Jon Schlinkert.
 * Licensed under the MIT License.
 */

var isPosixBracket = function isPosixBracket(str) {
  return typeof str === 'string' && /\[([:.=+])(?:[^\[\]]|)+\1\]/.test(str);
};

/**
 * POSIX character classes
 */

var POSIX = {
  alnum: 'a-zA-Z0-9',
  alpha: 'a-zA-Z',
  blank: ' \\t',
  cntrl: '\\x00-\\x1F\\x7F',
  digit: '0-9',
  graph: '\\x21-\\x7E',
  lower: 'a-z',
  print: '\\x20-\\x7E',
  punct: '-!"#$%&\'()\\*+,./:;<=>?@[\\]^_`{|}~',
  space: ' \\t\\r\\n\\v\\f',
  upper: 'A-Z',
  word:  'A-Za-z0-9_',
  xdigit: 'A-Fa-f0-9',
};

/**
 * Expose `brackets`
 */

var expandBrackets = brackets;

function brackets(str) {
  if (!isPosixBracket(str)) {
    return str;
  }

  var negated = false;
  if (str.indexOf('[^') !== -1) {
    negated = true;
    str = str.split('[^').join('[');
  }
  if (str.indexOf('[!') !== -1) {
    negated = true;
    str = str.split('[!').join('[');
  }

  var a = str.split('[');
  var b = str.split(']');
  var imbalanced = a.length !== b.length;

  var parts = str.split(/(?::\]\[:|\[?\[:|:\]\]?)/);
  var len = parts.length, i = 0;
  var end = '', beg = '';
  var res = [];

  // start at the end (innermost) first
  while (len--) {
    var inner = parts[i++];
    if (inner === '^[!' || inner === '[!') {
      inner = '';
      negated = true;
    }

    var prefix = negated ? '^' : '';
    var ch = POSIX[inner];

    if (ch) {
      res.push('[' + prefix + ch + ']');
    } else if (inner) {
      if (/^\[?\w-\w\]?$/.test(inner)) {
        if (i === parts.length) {
          res.push('[' + prefix + inner);
        } else if (i === 1) {
          res.push(prefix + inner + ']');
        } else {
          res.push(prefix + inner);
        }
      } else {
        if (i === 1) {
          beg += inner;
        } else if (i === parts.length) {
          end += inner;
        } else {
          res.push('[' + prefix + inner + ']');
        }
      }
    }
  }

  var result = res.join('|');
  var rlen = res.length || 1;
  if (rlen > 1) {
    result = '(?:' + result + ')';
    rlen = 1;
  }
  if (beg) {
    rlen++;
    if (beg.charAt(0) === '[') {
      if (imbalanced) {
        beg = '\\[' + beg.slice(1);
      } else {
        beg += ']';
      }
    }
    result = beg + result;
  }
  if (end) {
    rlen++;
    if (end.slice(-1) === ']') {
      if (imbalanced) {
        end = end.slice(0, end.length - 1) + '\\]';
      } else {
        end = '[' + end;
      }
    }
    result += end;
  }

  if (rlen > 1) {
    result = result.split('][').join(']|[');
    if (result.indexOf('|') !== -1 && !/\(\?/.test(result)) {
      result = '(?:' + result + ')';
    }
  }

  result = result.replace(/\[+=|=\]+/g, '\\b');
  return result;
}

brackets.makeRe = function(pattern) {
  try {
    return new RegExp(brackets(pattern));
  } catch (err) {}
};

brackets.isMatch = function(str, pattern) {
  try {
    return brackets.makeRe(pattern).test(str);
  } catch (err) {
    return false;
  }
};

brackets.match = function(arr, pattern) {
  var len = arr.length, i = 0;
  var res = arr.slice();

  var re = brackets.makeRe(pattern);
  while (i < len) {
    var ele = arr[i++];
    if (!re.test(ele)) {
      continue;
    }
    res.splice(i, 1);
  }
  return res;
};

/*!
 * is-extglob <https://github.com/jonschlinkert/is-extglob>
 *
 * Copyright (c) 2014-2015, Jon Schlinkert.
 * Licensed under the MIT License.
 */

var isExtglob = function isExtglob(str) {
  return typeof str === 'string'
    && /[@?!+*]\(/.test(str);
};

/**
 * Module dependencies
 */


var re;
var cache$2 = {};

/**
 * Expose `extglob`
 */

var extglob_1 = extglob;

/**
 * Convert the given extglob `string` to a regex-compatible
 * string.
 *
 * ```js
 * var extglob = require('extglob');
 * extglob('!(a?(b))');
 * //=> '(?!a(?:b)?)[^/]*?'
 * ```
 *
 * @param {String} `str` The string to convert.
 * @param {Object} `options`
 *   @option {Boolean} [options] `esc` If `false` special characters will not be escaped. Defaults to `true`.
 *   @option {Boolean} [options] `regex` If `true` a regular expression is returned instead of a string.
 * @return {String}
 * @api public
 */


function extglob(str, opts) {
  opts = opts || {};
  var o = {}, i = 0;

  // fix common character reversals
  // '*!(.js)' => '*.!(js)'
  str = str.replace(/!\(([^\w*()])/g, '$1!(');

  // support file extension negation
  str = str.replace(/([*\/])\.!\([*]\)/g, function (m, ch) {
    if (ch === '/') {
      return escape('\\/[^.]+');
    }
    return escape('[^.]+');
  });

  // create a unique key for caching by
  // combining the string and options
  var key = str
    + String(!!opts.regex)
    + String(!!opts.contains)
    + String(!!opts.escape);

  if (cache$2.hasOwnProperty(key)) {
    return cache$2[key];
  }

  if (!(re instanceof RegExp)) {
    re = regex();
  }

  opts.negate = false;
  var m;

  while (m = re.exec(str)) {
    var prefix = m[1];
    var inner = m[3];
    if (prefix === '!') {
      opts.negate = true;
    }

    var id = '__EXTGLOB_' + (i++) + '__';
    // use the prefix of the _last_ (outtermost) pattern
    o[id] = wrap$3(inner, prefix, opts.escape);
    str = str.split(m[0]).join(id);
  }

  var keys = Object.keys(o);
  var len = keys.length;

  // we have to loop again to allow us to convert
  // patterns in reverse order (starting with the
  // innermost/last pattern first)
  while (len--) {
    var prop = keys[len];
    str = str.split(prop).join(o[prop]);
  }

  var result = opts.regex
    ? toRegex$1(str, opts.contains, opts.negate)
    : str;

  result = result.split('.').join('\\.');

  // cache the result and return it
  return (cache$2[key] = result);
}

/**
 * Convert `string` to a regex string.
 *
 * @param  {String} `str`
 * @param  {String} `prefix` Character that determines how to wrap the string.
 * @param  {Boolean} `esc` If `false` special characters will not be escaped. Defaults to `true`.
 * @return {String}
 */

function wrap$3(inner, prefix, esc) {
  if (esc) { inner = escape(inner); }

  switch (prefix) {
    case '!':
      return '(?!' + inner + ')[^/]' + (esc ? '%%%~' : '*?');
    case '@':
      return '(?:' + inner + ')';
    case '+':
      return '(?:' + inner + ')+';
    case '*':
      return '(?:' + inner + ')' + (esc ? '%%' : '*')
    case '?':
      return '(?:' + inner + '|)';
    default:
      return inner;
  }
}

function escape(str) {
  str = str.split('*').join('[^/]%%%~');
  str = str.split('.').join('\\.');
  return str;
}

/**
 * extglob regex.
 */

function regex() {
  return /(\\?[@?!+*$]\\?)(\(([^()]*?)\))/;
}

/**
 * Negation regex
 */

function negate(str) {
  return '(?!^' + str + ').*$';
}

/**
 * Create the regex to do the matching. If
 * the leading character in the `pattern` is `!`
 * a negation regex is returned.
 *
 * @param {String} `pattern`
 * @param {Boolean} `contains` Allow loose matching.
 * @param {Boolean} `isNegated` True if the pattern is a negation pattern.
 */

function toRegex$1(pattern, contains, isNegated) {
  var prefix = contains ? '^' : '';
  var after = contains ? '$' : '';
  pattern = ('(?:' + pattern + ')' + after);
  if (isNegated) {
    pattern = prefix + negate(pattern);
  }
  return new RegExp(prefix + pattern);
}

/*!
 * is-glob <https://github.com/jonschlinkert/is-glob>
 *
 * Copyright (c) 2014-2015, Jon Schlinkert.
 * Licensed under the MIT License.
 */



var isGlob = function isGlob(str) {
  return typeof str === 'string'
    && (/[*!?{}(|)[\]]/.test(str)
     || isExtglob(str));
};

var isWin = process.platform === 'win32';

var removeTrailingSeparator = function (str) {
	var i = str.length - 1;
	if (i < 2) {
		return str;
	}
	while (isSeparator(str, i)) {
		i--;
	}
	return str.substr(0, i + 1);
};

function isSeparator(str, i) {
	var char = str[i];
	return i > 0 && (char === '/' || (isWin && char === '\\'));
}

/*!
 * normalize-path <https://github.com/jonschlinkert/normalize-path>
 *
 * Copyright (c) 2014-2017, Jon Schlinkert.
 * Released under the MIT License.
 */



var normalizePath = function normalizePath(str, stripTrailing) {
  if (typeof str !== 'string') {
    throw new TypeError('expected a string');
  }
  str = str.replace(/[\\\/]+/g, '/');
  if (stripTrailing !== false) {
    str = removeTrailingSeparator(str);
  }
  return str;
};

/*!
 * is-extendable <https://github.com/jonschlinkert/is-extendable>
 *
 * Copyright (c) 2015, Jon Schlinkert.
 * Licensed under the MIT License.
 */

var isExtendable = function isExtendable(val) {
  return typeof val !== 'undefined' && val !== null
    && (typeof val === 'object' || typeof val === 'function');
};

/*!
 * for-in <https://github.com/jonschlinkert/for-in>
 *
 * Copyright (c) 2014-2017, Jon Schlinkert.
 * Released under the MIT License.
 */

var forIn = function forIn(obj, fn, thisArg) {
  for (var key in obj) {
    if (fn.call(thisArg, obj[key], key, obj) === false) {
      break;
    }
  }
};

var hasOwn = Object.prototype.hasOwnProperty;

var forOwn = function forOwn(obj, fn, thisArg) {
  forIn(obj, function(val, key) {
    if (hasOwn.call(obj, key)) {
      return fn.call(thisArg, obj[key], key, obj);
    }
  });
};

var object_omit = function omit(obj, keys) {
  if (!isExtendable(obj)) { return {}; }

  keys = [].concat.apply([], [].slice.call(arguments, 1));
  var last = keys[keys.length - 1];
  var res = {}, fn;

  if (typeof last === 'function') {
    fn = keys.pop();
  }

  var isFunction = typeof fn === 'function';
  if (!keys.length && !isFunction) {
    return obj;
  }

  forOwn(obj, function(value, key) {
    if (keys.indexOf(key) === -1) {

      if (!isFunction) {
        res[key] = value;
      } else if (fn(value, key, obj)) {
        res[key] = value;
      }
    }
  });
  return res;
};

var globParent = function globParent(str) {
	str += 'a'; // preserves full path in case of trailing path separator
	do {str = path__default.dirname(str);} while (isGlob(str));
	return str;
};

var globBase = function globBase(pattern) {
  if (typeof pattern !== 'string') {
    throw new TypeError('glob-base expects a string.');
  }

  var res = {};
  res.base = globParent(pattern);
  res.isGlob = isGlob(pattern);

  if (res.base !== '.') {
    res.glob = pattern.substr(res.base.length);
    if (res.glob.charAt(0) === '/') {
      res.glob = res.glob.substr(1);
    }
  } else {
    res.glob = pattern;
  }

  if (!res.isGlob) {
    res.base = dirname(pattern);
    res.glob = res.base !== '.'
      ? pattern.substr(res.base.length)
      : pattern;
  }

  if (res.glob.substr(0, 2) === './') {
    res.glob = res.glob.substr(2);
  }
  if (res.glob.charAt(0) === '/') {
    res.glob = res.glob.substr(1);
  }
  return res;
};

function dirname(glob) {
  if (glob.slice(-1) === '/') { return glob; }
  return path__default.dirname(glob);
}

/*!
 * is-dotfile <https://github.com/jonschlinkert/is-dotfile>
 *
 * Copyright (c) 2015-2017, Jon Schlinkert.
 * Released under the MIT License.
 */

var isDotfile = function(str) {
  if (str.charCodeAt(0) === 46 /* . */ && str.indexOf('/', 1) === -1) {
    return true;
  }
  var slash = str.lastIndexOf('/');
  return slash !== -1 ? str.charCodeAt(slash + 1) === 46  /* . */ : false;
};

var parseGlob = createCommonjsModule(function (module) {
/*!
 * parse-glob <https://github.com/jonschlinkert/parse-glob>
 *
 * Copyright (c) 2015, Jon Schlinkert.
 * Licensed under the MIT License.
 */

var cache = module.exports.cache = {};

/**
 * Parse a glob pattern into tokens.
 *
 * When no paths or '**' are in the glob, we use a
 * different strategy for parsing the filename, since
 * file names can contain braces and other difficult
 * patterns. such as:
 *
 *  - `*.{a,b}`
 *  - `(**|*.js)`
 */

module.exports = function parseGlob(glob) {
  if (cache.hasOwnProperty(glob)) {
    return cache[glob];
  }

  var tok = {};
  tok.orig = glob;
  tok.is = {};

  // unescape dots and slashes in braces/brackets
  glob = escape(glob);

  var parsed = globBase(glob);
  tok.is.glob = parsed.isGlob;

  tok.glob = parsed.glob;
  tok.base = parsed.base;
  var segs = /([^\/]*)$/.exec(glob);

  tok.path = {};
  tok.path.dirname = '';
  tok.path.basename = segs[1] || '';
  tok.path.dirname = glob.split(tok.path.basename).join('') || '';
  var basename = (tok.path.basename || '').split('.') || '';
  tok.path.filename = basename[0] || '';
  tok.path.extname = basename.slice(1).join('.') || '';
  tok.path.ext = '';

  if (isGlob(tok.path.dirname) && !tok.path.basename) {
    if (!/\/$/.test(tok.glob)) {
      tok.path.basename = tok.glob;
    }
    tok.path.dirname = tok.base;
  }

  if (glob.indexOf('/') === -1 && !tok.is.globstar) {
    tok.path.dirname = '';
    tok.path.basename = tok.orig;
  }

  var dot = tok.path.basename.indexOf('.');
  if (dot !== -1) {
    tok.path.filename = tok.path.basename.slice(0, dot);
    tok.path.extname = tok.path.basename.slice(dot);
  }

  if (tok.path.extname.charAt(0) === '.') {
    var exts = tok.path.extname.split('.');
    tok.path.ext = exts[exts.length - 1];
  }

  // unescape dots and slashes in braces/brackets
  tok.glob = unescape(tok.glob);
  tok.path.dirname = unescape(tok.path.dirname);
  tok.path.basename = unescape(tok.path.basename);
  tok.path.filename = unescape(tok.path.filename);
  tok.path.extname = unescape(tok.path.extname);

  // Booleans
  var is = (glob && tok.is.glob);
  tok.is.negated  = glob && glob.charAt(0) === '!';
  tok.is.extglob  = glob && isExtglob(glob);
  tok.is.braces   = has(is, glob, '{');
  tok.is.brackets = has(is, glob, '[:');
  tok.is.globstar = has(is, glob, '**');
  tok.is.dotfile  = isDotfile(tok.path.basename) || isDotfile(tok.path.filename);
  tok.is.dotdir   = dotdir(tok.path.dirname);
  return (cache[glob] = tok);
};

/**
 * Returns true if the glob matches dot-directories.
 *
 * @param  {Object} `tok` The tokens object
 * @param  {Object} `path` The path object
 * @return {Object}
 */

function dotdir(base) {
  if (base.indexOf('/.') !== -1) {
    return true;
  }
  if (base.charAt(0) === '.' && base.charAt(1) !== '/') {
    return true;
  }
  return false;
}

/**
 * Returns true if the pattern has the given `ch`aracter(s)
 *
 * @param  {Object} `glob` The glob pattern.
 * @param  {Object} `ch` The character to test for
 * @return {Object}
 */

function has(is, glob, ch) {
  return is && glob.indexOf(ch) !== -1;
}

/**
 * Escape/unescape utils
 */

function escape(str) {
  var re = /\{([^{}]*?)}|\(([^()]*?)\)|\[([^\[\]]*?)\]/g;
  return str.replace(re, function (outter, braces, parens, brackets) {
    var inner = braces || parens || brackets;
    if (!inner) { return outter; }
    return outter.split(inner).join(esc(inner));
  });
}

function esc(str) {
  str = str.split('/').join('__SLASH__');
  str = str.split('.').join('__DOT__');
  return str;
}

function unescape(str) {
  str = str.split('__SLASH__').join('/');
  str = str.split('__DOT__').join('.');
  return str;
}
});

var parseGlob_1 = parseGlob.cache;

/*!
 * is-primitive <https://github.com/jonschlinkert/is-primitive>
 *
 * Copyright (c) 2014-2015, Jon Schlinkert.
 * Licensed under the MIT License.
 */

// see http://jsperf.com/testing-value-is-primitive/7
var isPrimitive = function isPrimitive(value) {
  return value == null || (typeof value !== 'function' && typeof value !== 'object');
};

var isEqualShallow = function isEqual(a, b) {
  if (!a && !b) { return true; }
  if (!a && b || a && !b) { return false; }

  var numKeysA = 0, numKeysB = 0, key;
  for (key in b) {
    numKeysB++;
    if (!isPrimitive(b[key]) || !a.hasOwnProperty(key) || (a[key] !== b[key])) {
      return false;
    }
  }
  for (key in a) {
    numKeysA++;
  }
  return numKeysA === numKeysB;
};

var basic = {};
var cache$3 = {};

/**
 * Expose `regexCache`
 */

var regexCache_1 = regexCache;

/**
 * Memoize the results of a call to the new RegExp constructor.
 *
 * @param  {Function} fn [description]
 * @param  {String} str [description]
 * @param  {Options} options [description]
 * @param  {Boolean} nocompare [description]
 * @return {RegExp}
 */

function regexCache(fn, str, opts) {
  var key = '_default_', regex, cached;

  if (!str && !opts) {
    if (typeof fn !== 'function') {
      return fn;
    }
    return basic[key] || (basic[key] = fn(str));
  }

  var isString = typeof str === 'string';
  if (isString) {
    if (!opts) {
      return basic[str] || (basic[str] = fn(str));
    }
    key = str;
  } else {
    opts = str;
  }

  cached = cache$3[key];
  if (cached && isEqualShallow(cached.opts, opts)) {
    return cached.regex;
  }

  memo(key, opts, (regex = fn(str, opts)));
  return regex;
}

function memo(key, opts, regex) {
  cache$3[key] = {regex: regex, opts: opts};
}

/**
 * Expose `cache`
 */

var cache_1 = cache$3;
var basic_1 = basic;

regexCache_1.cache = cache_1;
regexCache_1.basic = basic_1;

var utils_1 = createCommonjsModule(function (module) {
var win32 = process && process.platform === 'win32';


var utils = module.exports;

/**
 * Module dependencies
 */

utils.diff = arrDiff;
utils.unique = arrayUnique;
utils.braces = braces_1;
utils.brackets = expandBrackets;
utils.extglob = extglob_1;
utils.isExtglob = isExtglob;
utils.isGlob = isGlob;
utils.typeOf = kindOf;
utils.normalize = normalizePath;
utils.omit = object_omit;
utils.parseGlob = parseGlob;
utils.cache = regexCache_1;

/**
 * Get the filename of a filepath
 *
 * @param {String} `string`
 * @return {String}
 */

utils.filename = function filename(fp) {
  var seg = fp.match(filenameRegex());
  return seg && seg[0];
};

/**
 * Returns a function that returns true if the given
 * pattern is the same as a given `filepath`
 *
 * @param {String} `pattern`
 * @return {Function}
 */

utils.isPath = function isPath(pattern, opts) {
  opts = opts || {};
  return function(fp) {
    var unixified = utils.unixify(fp, opts);
    if(opts.nocase){
      return pattern.toLowerCase() === unixified.toLowerCase();
    }
    return pattern === unixified;
  };
};

/**
 * Returns a function that returns true if the given
 * pattern contains a `filepath`
 *
 * @param {String} `pattern`
 * @return {Function}
 */

utils.hasPath = function hasPath(pattern, opts) {
  return function(fp) {
    return utils.unixify(pattern, opts).indexOf(fp) !== -1;
  };
};

/**
 * Returns a function that returns true if the given
 * pattern matches or contains a `filepath`
 *
 * @param {String} `pattern`
 * @return {Function}
 */

utils.matchPath = function matchPath(pattern, opts) {
  var fn = (opts && opts.contains)
    ? utils.hasPath(pattern, opts)
    : utils.isPath(pattern, opts);
  return fn;
};

/**
 * Returns a function that returns true if the given
 * regex matches the `filename` of a file path.
 *
 * @param {RegExp} `re`
 * @return {Boolean}
 */

utils.hasFilename = function hasFilename(re) {
  return function(fp) {
    var name = utils.filename(fp);
    return name && re.test(name);
  };
};

/**
 * Coerce `val` to an array
 *
 * @param  {*} val
 * @return {Array}
 */

utils.arrayify = function arrayify(val) {
  return !Array.isArray(val)
    ? [val]
    : val;
};

/**
 * Normalize all slashes in a file path or glob pattern to
 * forward slashes.
 */

utils.unixify = function unixify(fp, opts) {
  if (opts && opts.unixify === false) { return fp; }
  if (opts && opts.unixify === true || win32 || path__default.sep === '\\') {
    return utils.normalize(fp, false);
  }
  if (opts && opts.unescape === true) {
    return fp ? fp.toString().replace(/\\(\w)/g, '$1') : '';
  }
  return fp;
};

/**
 * Escape/unescape utils
 */

utils.escapePath = function escapePath(fp) {
  return fp.replace(/[\\.]/g, '\\$&');
};

utils.unescapeGlob = function unescapeGlob(fp) {
  return fp.replace(/[\\"']/g, '');
};

utils.escapeRe = function escapeRe(str) {
  return str.replace(/[-[\\$*+?.#^\s{}(|)\]]/g, '\\$&');
};

/**
 * Expose `utils`
 */

module.exports = utils;
});

var chars = {};
var unesc;
var temp;

function reverse(object, prepender) {
  return Object.keys(object).reduce(function(reversed, key) {
    var newKey = prepender ? prepender + key : key; // Optionally prepend a string to key.
    reversed[object[key]] = newKey; // Swap key and value.
    return reversed; // Return the result.
  }, {});
}

/**
 * Regex for common characters
 */

chars.escapeRegex = {
  '?': /\?/g,
  '@': /\@/g,
  '!': /\!/g,
  '+': /\+/g,
  '*': /\*/g,
  '(': /\(/g,
  ')': /\)/g,
  '[': /\[/g,
  ']': /\]/g
};

/**
 * Escape characters
 */

chars.ESC = {
  '?': '__UNESC_QMRK__',
  '@': '__UNESC_AMPE__',
  '!': '__UNESC_EXCL__',
  '+': '__UNESC_PLUS__',
  '*': '__UNESC_STAR__',
  ',': '__UNESC_COMMA__',
  '(': '__UNESC_LTPAREN__',
  ')': '__UNESC_RTPAREN__',
  '[': '__UNESC_LTBRACK__',
  ']': '__UNESC_RTBRACK__'
};

/**
 * Unescape characters
 */

chars.UNESC = unesc || (unesc = reverse(chars.ESC, '\\'));

chars.ESC_TEMP = {
  '?': '__TEMP_QMRK__',
  '@': '__TEMP_AMPE__',
  '!': '__TEMP_EXCL__',
  '*': '__TEMP_STAR__',
  '+': '__TEMP_PLUS__',
  ',': '__TEMP_COMMA__',
  '(': '__TEMP_LTPAREN__',
  ')': '__TEMP_RTPAREN__',
  '[': '__TEMP_LTBRACK__',
  ']': '__TEMP_RTBRACK__'
};

chars.TEMP = temp || (temp = reverse(chars.ESC_TEMP));

var chars_1 = chars;

var glob = createCommonjsModule(function (module) {
var Glob = module.exports = function Glob(pattern, options) {
  if (!(this instanceof Glob)) {
    return new Glob(pattern, options);
  }
  this.options = options || {};
  this.pattern = pattern;
  this.history = [];
  this.tokens = {};
  this.init(pattern);
};

/**
 * Initialize defaults
 */

Glob.prototype.init = function(pattern) {
  this.orig = pattern;
  this.negated = this.isNegated();
  this.options.track = this.options.track || false;
  this.options.makeRe = true;
};

/**
 * Push a change into `glob.history`. Useful
 * for debugging.
 */

Glob.prototype.track = function(msg) {
  if (this.options.track) {
    this.history.push({msg: msg, pattern: this.pattern});
  }
};

/**
 * Return true if `glob.pattern` was negated
 * with `!`, also remove the `!` from the pattern.
 *
 * @return {Boolean}
 */

Glob.prototype.isNegated = function() {
  if (this.pattern.charCodeAt(0) === 33 /* '!' */) {
    this.pattern = this.pattern.slice(1);
    return true;
  }
  return false;
};

/**
 * Expand braces in the given glob pattern.
 *
 * We only need to use the [braces] lib when
 * patterns are nested.
 */

Glob.prototype.braces = function() {
  if (this.options.nobraces !== true && this.options.nobrace !== true) {
    // naive/fast check for imbalanced characters
    var a = this.pattern.match(/[\{\(\[]/g);
    var b = this.pattern.match(/[\}\)\]]/g);

    // if imbalanced, don't optimize the pattern
    if (a && b && (a.length !== b.length)) {
      this.options.makeRe = false;
    }

    // expand brace patterns and join the resulting array
    var expanded = utils_1.braces(this.pattern, this.options);
    this.pattern = expanded.join('|');
  }
};

/**
 * Expand bracket expressions in `glob.pattern`
 */

Glob.prototype.brackets = function() {
  if (this.options.nobrackets !== true) {
    this.pattern = utils_1.brackets(this.pattern);
  }
};

/**
 * Expand bracket expressions in `glob.pattern`
 */

Glob.prototype.extglob = function() {
  if (this.options.noextglob === true) { return; }

  if (utils_1.isExtglob(this.pattern)) {
    this.pattern = utils_1.extglob(this.pattern, {escape: true});
  }
};

/**
 * Parse the given pattern
 */

Glob.prototype.parse = function(pattern) {
  this.tokens = utils_1.parseGlob(pattern || this.pattern, true);
  return this.tokens;
};

/**
 * Replace `a` with `b`. Also tracks the change before and
 * after each replacement. This is disabled by default, but
 * can be enabled by setting `options.track` to true.
 *
 * Also, when the pattern is a string, `.split()` is used,
 * because it's much faster than replace.
 *
 * @param  {RegExp|String} `a`
 * @param  {String} `b`
 * @param  {Boolean} `escape` When `true`, escapes `*` and `?` in the replacement.
 * @return {String}
 */

Glob.prototype._replace = function(a, b, escape) {
  this.track('before (find): "' + a + '" (replace with): "' + b + '"');
  if (escape) { b = esc(b); }
  if (a && b && typeof a === 'string') {
    this.pattern = this.pattern.split(a).join(b);
  } else {
    this.pattern = this.pattern.replace(a, b);
  }
  this.track('after');
};

/**
 * Escape special characters in the given string.
 *
 * @param  {String} `str` Glob pattern
 * @return {String}
 */

Glob.prototype.escape = function(str) {
  this.track('before escape: ');
  var re = /["\\](['"]?[^"'\\]['"]?)/g;

  this.pattern = str.replace(re, function($0, $1) {
    var o = chars_1.ESC;
    var ch = o && o[$1];
    if (ch) {
      return ch;
    }
    if (/[a-z]/i.test($0)) {
      return $0.split('\\').join('');
    }
    return $0;
  });

  this.track('after escape: ');
};

/**
 * Unescape special characters in the given string.
 *
 * @param  {String} `str`
 * @return {String}
 */

Glob.prototype.unescape = function(str) {
  var re = /__([A-Z]+)_([A-Z]+)__/g;
  this.pattern = str.replace(re, function($0, $1) {
    return chars_1[$1][$0];
  });
  this.pattern = unesc(this.pattern);
};

/**
 * Escape/unescape utils
 */

function esc(str) {
  str = str.split('?').join('%~');
  str = str.split('*').join('%%');
  return str;
}

function unesc(str) {
  str = str.split('%~').join('?');
  str = str.split('%%').join('*');
  return str;
}
});

/**
 * Expose `expand`
 */

var expand_1 = expand;

/**
 * Expand a glob pattern to resolve braces and
 * similar patterns before converting to regex.
 *
 * @param  {String|Array} `pattern`
 * @param  {Array} `files`
 * @param  {Options} `opts`
 * @return {Array}
 */

function expand(pattern, options) {
  if (typeof pattern !== 'string') {
    throw new TypeError('micromatch.expand(): argument should be a string.');
  }

  var glob$$1 = new glob(pattern, options || {});
  var opts = glob$$1.options;

  if (!utils_1.isGlob(pattern)) {
    glob$$1.pattern = glob$$1.pattern.replace(/([\/.])/g, '\\$1');
    return glob$$1;
  }

  glob$$1.pattern = glob$$1.pattern.replace(/(\+)(?!\()/g, '\\$1');
  glob$$1.pattern = glob$$1.pattern.split('$').join('\\$');

  if (typeof opts.braces !== 'boolean' && typeof opts.nobraces !== 'boolean') {
    opts.braces = true;
  }

  if (glob$$1.pattern === '.*') {
    return {
      pattern: '\\.' + star,
      tokens: tok,
      options: opts
    };
  }

  if (glob$$1.pattern === '*') {
    return {
      pattern: oneStar(opts.dot),
      tokens: tok,
      options: opts
    };
  }

  // parse the glob pattern into tokens
  glob$$1.parse();
  var tok = glob$$1.tokens;
  tok.is.negated = opts.negated;

  // dotfile handling
  if ((opts.dotfiles === true || tok.is.dotfile) && opts.dot !== false) {
    opts.dotfiles = true;
    opts.dot = true;
  }

  if ((opts.dotdirs === true || tok.is.dotdir) && opts.dot !== false) {
    opts.dotdirs = true;
    opts.dot = true;
  }

  // check for braces with a dotfile pattern
  if (/[{,]\./.test(glob$$1.pattern)) {
    opts.makeRe = false;
    opts.dot = true;
  }

  if (opts.nonegate !== true) {
    opts.negated = glob$$1.negated;
  }

  // if the leading character is a dot or a slash, escape it
  if (glob$$1.pattern.charAt(0) === '.' && glob$$1.pattern.charAt(1) !== '/') {
    glob$$1.pattern = '\\' + glob$$1.pattern;
  }

  /**
   * Extended globs
   */

  // expand braces, e.g `{1..5}`
  glob$$1.track('before braces');
  if (tok.is.braces) {
    glob$$1.braces();
  }
  glob$$1.track('after braces');

  // expand extglobs, e.g `foo/!(a|b)`
  glob$$1.track('before extglob');
  if (tok.is.extglob) {
    glob$$1.extglob();
  }
  glob$$1.track('after extglob');

  // expand brackets, e.g `[[:alpha:]]`
  glob$$1.track('before brackets');
  if (tok.is.brackets) {
    glob$$1.brackets();
  }
  glob$$1.track('after brackets');

  // special patterns
  glob$$1._replace('[!', '[^');
  glob$$1._replace('(?', '(%~');
  glob$$1._replace(/\[\]/, '\\[\\]');
  glob$$1._replace('/[', '/' + (opts.dot ? dotfiles : nodot) + '[', true);
  glob$$1._replace('/?', '/' + (opts.dot ? dotfiles : nodot) + '[^/]', true);
  glob$$1._replace('/.', '/(?=.)\\.', true);

  // windows drives
  glob$$1._replace(/^(\w):([\\\/]+?)/gi, '(?=.)$1:$2', true);

  // negate slashes in exclusion ranges
  if (glob$$1.pattern.indexOf('[^') !== -1) {
    glob$$1.pattern = negateSlash(glob$$1.pattern);
  }

  if (opts.globstar !== false && glob$$1.pattern === '**') {
    glob$$1.pattern = globstar(opts.dot);

  } else {
    glob$$1.pattern = balance(glob$$1.pattern, '[', ']');
    glob$$1.escape(glob$$1.pattern);

    // if the pattern has `**`
    if (tok.is.globstar) {
      glob$$1.pattern = collapse(glob$$1.pattern, '/**');
      glob$$1.pattern = collapse(glob$$1.pattern, '**/');
      glob$$1._replace('/**/', '(?:/' + globstar(opts.dot) + '/|/)', true);
      glob$$1._replace(/\*{2,}/g, '**');

      // 'foo/*'
      glob$$1._replace(/(\w+)\*(?!\/)/g, '$1[^/]*?', true);
      glob$$1._replace(/\*\*\/\*(\w)/g, globstar(opts.dot) + '\\/' + (opts.dot ? dotfiles : nodot) + '[^/]*?$1', true);

      if (opts.dot !== true) {
        glob$$1._replace(/\*\*\/(.)/g, '(?:**\\/|)$1');
      }

      // 'foo/**' or '{**,*}', but not 'foo**'
      if (tok.path.dirname !== '' || /,\*\*|\*\*,/.test(glob$$1.orig)) {
        glob$$1._replace('**', globstar(opts.dot), true);
      }
    }

    // ends with /*
    glob$$1._replace(/\/\*$/, '\\/' + oneStar(opts.dot), true);
    // ends with *, no slashes
    glob$$1._replace(/(?!\/)\*$/, star, true);
    // has 'n*.' (partial wildcard w/ file extension)
    glob$$1._replace(/([^\/]+)\*/, '$1' + oneStar(true), true);
    // has '*'
    glob$$1._replace('*', oneStar(opts.dot), true);
    glob$$1._replace('?.', '?\\.', true);
    glob$$1._replace('?:', '?:', true);

    glob$$1._replace(/\?+/g, function(match) {
      var len = match.length;
      if (len === 1) {
        return qmark;
      }
      return qmark + '{' + len + '}';
    });

    // escape '.abc' => '\\.abc'
    glob$$1._replace(/\.([*\w]+)/g, '\\.$1');
    // fix '[^\\\\/]'
    glob$$1._replace(/\[\^[\\\/]+\]/g, qmark);
    // '///' => '\/'
    glob$$1._replace(/\/+/g, '\\/');
    // '\\\\\\' => '\\'
    glob$$1._replace(/\\{2,}/g, '\\');
  }

  // unescape previously escaped patterns
  glob$$1.unescape(glob$$1.pattern);
  glob$$1._replace('__UNESC_STAR__', '*');

  // escape dots that follow qmarks
  glob$$1._replace('?.', '?\\.');

  // remove unnecessary slashes in character classes
  glob$$1._replace('[^\\/]', qmark);

  if (glob$$1.pattern.length > 1) {
    if (/^[\[?*]/.test(glob$$1.pattern)) {
      // only prepend the string if we don't want to match dotfiles
      glob$$1.pattern = (opts.dot ? dotfiles : nodot) + glob$$1.pattern;
    }
  }

  return glob$$1;
}

/**
 * Collapse repeated character sequences.
 *
 * ```js
 * collapse('a/../../../b', '../');
 * //=> 'a/../b'
 * ```
 *
 * @param  {String} `str`
 * @param  {String} `ch` Character sequence to collapse
 * @return {String}
 */

function collapse(str, ch) {
  var res = str.split(ch);
  var isFirst = res[0] === '';
  var isLast = res[res.length - 1] === '';
  res = res.filter(Boolean);
  if (isFirst) { res.unshift(''); }
  if (isLast) { res.push(''); }
  return res.join(ch);
}

/**
 * Negate slashes in exclusion ranges, per glob spec:
 *
 * ```js
 * negateSlash('[^foo]');
 * //=> '[^\\/foo]'
 * ```
 *
 * @param  {String} `str` glob pattern
 * @return {String}
 */

function negateSlash(str) {
  return str.replace(/\[\^([^\]]*?)\]/g, function(match, inner) {
    if (inner.indexOf('/') === -1) {
      inner = '\\/' + inner;
    }
    return '[^' + inner + ']';
  });
}

/**
 * Escape imbalanced braces/bracket. This is a very
 * basic, naive implementation that only does enough
 * to serve the purpose.
 */

function balance(str, a, b) {
  var aarr = str.split(a);
  var alen = aarr.join('').length;
  var blen = str.split(b).join('').length;

  if (alen !== blen) {
    str = aarr.join('\\' + a);
    return str.split(b).join('\\' + b);
  }
  return str;
}

/**
 * Special patterns to be converted to regex.
 * Heuristics are used to simplify patterns
 * and speed up processing.
 */

/* eslint no-multi-spaces: 0 */
var qmark       = '[^/]';
var star        = qmark + '*?';
var nodot       = '(?!\\.)(?=.)';
var dotfileGlob = '(?:\\/|^)\\.{1,2}($|\\/)';
var dotfiles    = '(?!' + dotfileGlob + ')(?=.)';
var twoStarDot  = '(?:(?!' + dotfileGlob + ').)*?';

/**
 * Create a regex for `*`.
 *
 * If `dot` is true, or the pattern does not begin with
 * a leading star, then return the simpler regex.
 */

function oneStar(dotfile) {
  return dotfile ? '(?!' + dotfileGlob + ')(?=.)' + star : (nodot + star);
}

function globstar(dotfile) {
  if (dotfile) { return twoStarDot; }
  return '(?:(?!(?:\\/|^)\\.).)*?';
}

/**
 * The main function. Pass an array of filepaths,
 * and a string or array of glob patterns
 *
 * @param  {Array|String} `files`
 * @param  {Array|String} `patterns`
 * @param  {Object} `opts`
 * @return {Array} Array of matches
 */

function micromatch(files, patterns, opts) {
  if (!files || !patterns) { return []; }
  opts = opts || {};

  if (typeof opts.cache === 'undefined') {
    opts.cache = true;
  }

  if (!Array.isArray(patterns)) {
    return match(files, patterns, opts);
  }

  var len = patterns.length, i = 0;
  var omit = [], keep = [];

  while (len--) {
    var glob = patterns[i++];
    if (typeof glob === 'string' && glob.charCodeAt(0) === 33 /* ! */) {
      omit.push.apply(omit, match(files, glob.slice(1), opts));
    } else {
      keep.push.apply(keep, match(files, glob, opts));
    }
  }
  return utils_1.diff(keep, omit);
}

/**
 * Return an array of files that match the given glob pattern.
 *
 * This function is called by the main `micromatch` function If you only
 * need to pass a single pattern you might get very minor speed improvements
 * using this function.
 *
 * @param  {Array} `files`
 * @param  {String} `pattern`
 * @param  {Object} `options`
 * @return {Array}
 */

function match(files, pattern, opts) {
  if (utils_1.typeOf(files) !== 'string' && !Array.isArray(files)) {
    throw new Error(msg('match', 'files', 'a string or array'));
  }

  files = utils_1.arrayify(files);
  opts = opts || {};

  var negate = opts.negate || false;
  var orig = pattern;

  if (typeof pattern === 'string') {
    negate = pattern.charAt(0) === '!';
    if (negate) {
      pattern = pattern.slice(1);
    }

    // we need to remove the character regardless,
    // so the above logic is still needed
    if (opts.nonegate === true) {
      negate = false;
    }
  }

  var _isMatch = matcher(pattern, opts);
  var len = files.length, i = 0;
  var res = [];

  while (i < len) {
    var file = files[i++];
    var fp = utils_1.unixify(file, opts);

    if (!_isMatch(fp)) { continue; }
    res.push(fp);
  }

  if (res.length === 0) {
    if (opts.failglob === true) {
      throw new Error('micromatch.match() found no matches for: "' + orig + '".');
    }

    if (opts.nonull || opts.nullglob) {
      res.push(utils_1.unescapeGlob(orig));
    }
  }

  // if `negate` was defined, diff negated files
  if (negate) { res = utils_1.diff(files, res); }

  // if `ignore` was defined, diff ignored filed
  if (opts.ignore && opts.ignore.length) {
    pattern = opts.ignore;
    opts = utils_1.omit(opts, ['ignore']);
    res = utils_1.diff(res, micromatch(res, pattern, opts));
  }

  if (opts.nodupes) {
    return utils_1.unique(res);
  }
  return res;
}

/**
 * Returns a function that takes a glob pattern or array of glob patterns
 * to be used with `Array#filter()`. (Internally this function generates
 * the matching function using the [matcher] method).
 *
 * ```js
 * var fn = mm.filter('[a-c]');
 * ['a', 'b', 'c', 'd', 'e'].filter(fn);
 * //=> ['a', 'b', 'c']
 * ```
 * @param  {String|Array} `patterns` Can be a glob or array of globs.
 * @param  {Options} `opts` Options to pass to the [matcher] method.
 * @return {Function} Filter function to be passed to `Array#filter()`.
 */

function filter(patterns, opts) {
  if (!Array.isArray(patterns) && typeof patterns !== 'string') {
    throw new TypeError(msg('filter', 'patterns', 'a string or array'));
  }

  patterns = utils_1.arrayify(patterns);
  var len = patterns.length, i = 0;
  var patternMatchers = Array(len);
  while (i < len) {
    patternMatchers[i] = matcher(patterns[i++], opts);
  }

  return function(fp) {
    if (fp == null) { return []; }
    var len = patternMatchers.length, i = 0;
    var res = true;

    fp = utils_1.unixify(fp, opts);
    while (i < len) {
      var fn = patternMatchers[i++];
      if (!fn(fp)) {
        res = false;
        break;
      }
    }
    return res;
  };
}

/**
 * Returns true if the filepath contains the given
 * pattern. Can also return a function for matching.
 *
 * ```js
 * isMatch('foo.md', '*.md', {});
 * //=> true
 *
 * isMatch('*.md', {})('foo.md')
 * //=> true
 * ```
 * @param  {String} `fp`
 * @param  {String} `pattern`
 * @param  {Object} `opts`
 * @return {Boolean}
 */

function isMatch(fp, pattern, opts) {
  if (typeof fp !== 'string') {
    throw new TypeError(msg('isMatch', 'filepath', 'a string'));
  }

  fp = utils_1.unixify(fp, opts);
  if (utils_1.typeOf(pattern) === 'object') {
    return matcher(fp, pattern);
  }
  return matcher(pattern, opts)(fp);
}

/**
 * Returns true if the filepath matches the
 * given pattern.
 */

function contains(fp, pattern, opts) {
  if (typeof fp !== 'string') {
    throw new TypeError(msg('contains', 'pattern', 'a string'));
  }

  opts = opts || {};
  opts.contains = (pattern !== '');
  fp = utils_1.unixify(fp, opts);

  if (opts.contains && !utils_1.isGlob(pattern)) {
    return fp.indexOf(pattern) !== -1;
  }
  return matcher(pattern, opts)(fp);
}

/**
 * Returns true if a file path matches any of the
 * given patterns.
 *
 * @param  {String} `fp` The filepath to test.
 * @param  {String|Array} `patterns` Glob patterns to use.
 * @param  {Object} `opts` Options to pass to the `matcher()` function.
 * @return {String}
 */

function any(fp, patterns, opts) {
  if (!Array.isArray(patterns) && typeof patterns !== 'string') {
    throw new TypeError(msg('any', 'patterns', 'a string or array'));
  }

  patterns = utils_1.arrayify(patterns);
  var len = patterns.length;

  fp = utils_1.unixify(fp, opts);
  while (len--) {
    var isMatch = matcher(patterns[len], opts);
    if (isMatch(fp)) {
      return true;
    }
  }
  return false;
}

/**
 * Filter the keys of an object with the given `glob` pattern
 * and `options`
 *
 * @param  {Object} `object`
 * @param  {Pattern} `object`
 * @return {Array}
 */

function matchKeys(obj, glob, options) {
  if (utils_1.typeOf(obj) !== 'object') {
    throw new TypeError(msg('matchKeys', 'first argument', 'an object'));
  }

  var fn = matcher(glob, options);
  var res = {};

  for (var key in obj) {
    if (obj.hasOwnProperty(key) && fn(key)) {
      res[key] = obj[key];
    }
  }
  return res;
}

/**
 * Return a function for matching based on the
 * given `pattern` and `options`.
 *
 * @param  {String} `pattern`
 * @param  {Object} `options`
 * @return {Function}
 */

function matcher(pattern, opts) {
  // pattern is a function
  if (typeof pattern === 'function') {
    return pattern;
  }
  // pattern is a regex
  if (pattern instanceof RegExp) {
    return function(fp) {
      return pattern.test(fp);
    };
  }

  if (typeof pattern !== 'string') {
    throw new TypeError(msg('matcher', 'pattern', 'a string, regex, or function'));
  }

  // strings, all the way down...
  pattern = utils_1.unixify(pattern, opts);

  // pattern is a non-glob string
  if (!utils_1.isGlob(pattern)) {
    return utils_1.matchPath(pattern, opts);
  }
  // pattern is a glob string
  var re = makeRe(pattern, opts);

  // `matchBase` is defined
  if (opts && opts.matchBase) {
    return utils_1.hasFilename(re, opts);
  }
  // `matchBase` is not defined
  return function(fp) {
    fp = utils_1.unixify(fp, opts);
    return re.test(fp);
  };
}

/**
 * Create and cache a regular expression for matching
 * file paths.
 *
 * If the leading character in the `glob` is `!`, a negation
 * regex is returned.
 *
 * @param  {String} `glob`
 * @param  {Object} `options`
 * @return {RegExp}
 */

function toRegex(glob, options) {
  // clone options to prevent  mutating the original object
  var opts = Object.create(options || {});
  var flags = opts.flags || '';
  if (opts.nocase && flags.indexOf('i') === -1) {
    flags += 'i';
  }

  var parsed = expand_1(glob, opts);

  // pass in tokens to avoid parsing more than once
  opts.negated = opts.negated || parsed.negated;
  opts.negate = opts.negated;
  glob = wrapGlob(parsed.pattern, opts);
  var re;

  try {
    re = new RegExp(glob, flags);
    return re;
  } catch (err) {
    err.reason = 'micromatch invalid regex: (' + re + ')';
    if (opts.strict) { throw new SyntaxError(err); }
  }

  // we're only here if a bad pattern was used and the user
  // passed `options.silent`, so match nothing
  return /$^/;
}

/**
 * Create the regex to do the matching. If the leading
 * character in the `glob` is `!` a negation regex is returned.
 *
 * @param {String} `glob`
 * @param {Boolean} `negate`
 */

function wrapGlob(glob, opts) {
  var prefix = (opts && !opts.contains) ? '^' : '';
  var after = (opts && !opts.contains) ? '$' : '';
  glob = ('(?:' + glob + ')' + after);
  if (opts && opts.negate) {
    return prefix + ('(?!^' + glob + ').*$');
  }
  return prefix + glob;
}

/**
 * Create and cache a regular expression for matching file paths.
 * If the leading character in the `glob` is `!`, a negation
 * regex is returned.
 *
 * @param  {String} `glob`
 * @param  {Object} `options`
 * @return {RegExp}
 */

function makeRe(glob, opts) {
  if (utils_1.typeOf(glob) !== 'string') {
    throw new Error(msg('makeRe', 'glob', 'a string'));
  }
  return utils_1.cache(toRegex, glob, opts);
}

/**
 * Make error messages consistent. Follows this format:
 *
 * ```js
 * msg(methodName, argNumber, nativeType);
 * // example:
 * msg('matchKeys', 'first', 'an object');
 * ```
 *
 * @param  {String} `method`
 * @param  {String} `num`
 * @param  {String} `type`
 * @return {String}
 */

function msg(method, what, type) {
  return 'micromatch.' + method + '(): ' + what + ' should be ' + type + '.';
}

/**
 * Public methods
 */

/* eslint no-multi-spaces: 0 */
micromatch.any       = any;
micromatch.braces    = micromatch.braceExpand = utils_1.braces;
micromatch.contains  = contains;
micromatch.expand    = expand_1;
micromatch.filter    = filter;
micromatch.isMatch   = isMatch;
micromatch.makeRe    = makeRe;
micromatch.match     = match;
micromatch.matcher   = matcher;
micromatch.matchKeys = matchKeys;

/**
 * Expose `micromatch`
 */

var micromatch_1 = micromatch;

function ensureArray$1 ( thing ) {
	if ( Array.isArray( thing ) ) { return thing; }
	if ( thing == undefined ) { return []; }
	return [ thing ];
}

function createFilter ( include, exclude ) {
	var getMatcher = function (id) { return ( isRegexp( id ) ? id : { test: micromatch_1.matcher( path.resolve( id ) ) } ); };
	include = ensureArray$1( include ).map( getMatcher );
	exclude = ensureArray$1( exclude ).map( getMatcher );

	return function ( id ) {

		if ( typeof id !== 'string' ) { return false; }
		if ( /\0/.test( id ) ) { return false; }

		id = id.split( path.sep ).join( '/' );

		for ( var i = 0; i < exclude.length; ++i ) {
			var matcher = exclude[i];
			if ( matcher.test( id ) ) { return false; }
		}

		for ( var i$1 = 0; i$1 < include.length; ++i$1 ) {
			var matcher$1 = include[i$1];
			if ( matcher$1.test( id ) ) { return true; }
		}

		return !include.length;
	};
}

function isRegexp ( val ) {
	return val instanceof RegExp;
}

var reservedWords$1 = 'break case class catch const continue debugger default delete do else export extends finally for function if import in instanceof let new return super switch this throw try typeof var void while with yield enum await implements package protected static interface private public'.split( ' ' );
var builtins = 'arguments Infinity NaN undefined null true false eval uneval isFinite isNaN parseFloat parseInt decodeURI decodeURIComponent encodeURI encodeURIComponent escape unescape Object Function Boolean Symbol Error EvalError InternalError RangeError ReferenceError SyntaxError TypeError URIError Number Math Date String RegExp Array Int8Array Uint8Array Uint8ClampedArray Int16Array Uint16Array Int32Array Uint32Array Float32Array Float64Array Map Set WeakMap WeakSet SIMD ArrayBuffer DataView JSON Promise Generator GeneratorFunction Reflect Proxy Intl'.split( ' ' );

var blacklisted = Object.create( null );
reservedWords$1.concat( builtins ).forEach( function (word) { return blacklisted[ word ] = true; } );

function buble$1 ( options ) {
	if ( !options ) { options = {}; }
	var filter = createFilter( options.include, options.exclude );

	if ( !options.transforms ) { options.transforms = {}; }
	options.transforms.modules = false;

	return {
		name: 'buble',

		transform: function ( code, id ) {
			if ( !filter( id ) ) { return null; }

			try {
				return transform( code, options );
			} catch (e) {
				e.plugin = 'buble';
				e.loc = { file: id, line: e.loc.line, column: e.loc.column };
				e.frame = e.snippet;
				throw e;
			}
		}
	};
}

function loadConfigFile (configFile, silent) {
	const warnings = batchWarnings();

	return rollup.rollup({
		input: configFile,
		external: id => {
			return (id[0] !== '.' && !path__default.isAbsolute(id)) || id.slice(-5,id.length) === '.json';
		},
		onwarn: warnings.add,
		plugins: [
			buble$1({objectAssign: 'Object.assign'}) ],
	})
		.then( bundle => {
			if ( !silent && warnings.count > 0 ) {
				stderr( chalk.bold( `loaded ${relativeId( configFile )} with warnings` ) );
				warnings.flush();
			}

			return bundle.generate({
				format: 'cjs'
			});
		})
		.then( (ref) => {
			var code = ref.code;

			// temporarily override require
			const defaultLoader = require.extensions[ '.js' ];
			require.extensions[ '.js' ] = ( m, filename ) => {
				if ( filename === configFile ) {
					m._compile( code, filename );
				} else {
					defaultLoader( m, filename );
				}
			};

			delete require.cache[configFile];
			return Promise.resolve(require( configFile )).then(configs => {
				if ( Object.keys( configs ).length === 0 ) {
					handleError({
						code: 'MISSING_CONFIG',
						message: 'Config file must export an options object, or an array of options objects',
						url: 'https://rollupjs.org/#using-config-files'
					});
				}

				require.extensions[ '.js' ] = defaultLoader;

				return Array.isArray( configs ) ? configs : [configs];
			});
		});
}

function sequence ( array, fn ) {
	const results = [];
	let promise = Promise.resolve();

	function next ( member, i ) {
		return fn( member ).then( value => results[i] = value );
	}

	for ( let i = 0; i < array.length; i += 1 ) {
		promise = promise.then( () => next( array[i], i ) );
	}

	return promise.then( () => results );
}

var parseMs = function (ms) {
	if (typeof ms !== 'number') {
		throw new TypeError('Expected a number');
	}

	var roundTowardZero = ms > 0 ? Math.floor : Math.ceil;

	return {
		days: roundTowardZero(ms / 86400000),
		hours: roundTowardZero(ms / 3600000) % 24,
		minutes: roundTowardZero(ms / 60000) % 60,
		seconds: roundTowardZero(ms / 1000) % 60,
		milliseconds: roundTowardZero(ms) % 1000
	};
};

var addendum = "addenda";
var aircraft = "aircraft";
var alga = "algae";
var alumna = "alumnae";
var alumnus = "alumni";
var amoeba = "amoebae";
var analysis = "analyses";
var antenna = "antennae";
var antithesis = "antitheses";
var apex = "apices";
var appendix = "appendices";
var automaton = "automata";
var axis = "axes";
var bacillus = "bacilli";
var bacterium = "bacteria";
var barracks = "barracks";
var basis = "bases";
var beau = "beaux";
var bison = "bison";
var buffalo = "buffalo";
var bureau = "bureaus";
var cactus = "cacti";
var calf = "calves";
var carp = "carp";
var census = "censuses";
var chassis = "chassis";
var cherub = "cherubim";
var child = "children";
var cod = "cod";
var codex = "codices";
var concerto = "concerti";
var corpus = "corpora";
var crisis = "crises";
var criterion = "criteria";
var curriculum = "curricula";
var datum = "data";
var deer = "deer";
var diagnosis = "diagnoses";
var die = "dice";
var dwarf = "dwarfs";
var echo = "echoes";
var elf = "elves";
var elk = "elk";
var ellipsis = "ellipses";
var embargo = "embargoes";
var emphasis = "emphases";
var erratum = "errata";
var fez = "fezes";
var firmware = "firmware";
var fish = "fish";
var focus = "foci";
var foot = "feet";
var formula = "formulae";
var fungus = "fungi";
var gallows = "gallows";
var genus = "genera";
var goose = "geese";
var graffito = "graffiti";
var grouse = "grouse";
var half = "halves";
var hero = "heroes";
var hoof = "hooves";
var hovercraft = "hovercraft";
var hypothesis = "hypotheses";
var index = "indices";
var kakapo = "kakapo";
var knife = "knives";
var larva = "larvae";
var leaf = "leaves";
var libretto = "libretti";
var life = "lives";
var loaf = "loaves";
var locus = "loci";
var louse = "lice";
var man = "men";
var matrix$1 = "matrices";
var means = "means";
var medium = "media";
var memorandum = "memoranda";
var millennium = "millennia";
var minutia = "minutiae";
var moose = "moose";
var mouse = "mice";
var nebula = "nebulae";
var nemesis = "nemeses";
var neurosis = "neuroses";
var news = "news";
var nucleus = "nuclei";
var oasis = "oases";
var offspring = "offspring";
var opus = "opera";
var ovum = "ova";
var ox = "oxen";
var paralysis = "paralyses";
var parenthesis = "parentheses";
var person = "people";
var phenomenon = "phenomena";
var phylum = "phyla";
var pike = "pike";
var polyhedron = "polyhedra";
var potato = "potatoes";
var prognosis = "prognoses";
var quiz = "quizzes";
var radius = "radii";
var referendum = "referenda";
var salmon = "salmon";
var scarf = "scarves";
var self$1 = "selves";
var series = "series";
var sheep = "sheep";
var shelf = "shelves";
var shrimp = "shrimp";
var spacecraft = "spacecraft";
var species = "species";
var spectrum = "spectra";
var squid = "squid";
var stimulus = "stimuli";
var stratum = "strata";
var swine = "swine";
var syllabus = "syllabi";
var symposium = "symposia";
var synopsis = "synopses";
var synthesis = "syntheses";
var tableau = "tableaus";
var that = "those";
var thesis = "theses";
var thief = "thieves";
var tomato = "tomatoes";
var tooth = "teeth";
var trout = "trout";
var tuna = "tuna";
var vertebra = "vertebrae";
var vertex = "vertices";
var veto = "vetoes";
var vita = "vitae";
var vortex = "vortices";
var watercraft = "watercraft";
var wharf = "wharves";
var wife = "wives";
var wolf = "wolves";
var woman = "women";
var irregularPlurals = {
	addendum: addendum,
	aircraft: aircraft,
	alga: alga,
	alumna: alumna,
	alumnus: alumnus,
	amoeba: amoeba,
	analysis: analysis,
	antenna: antenna,
	antithesis: antithesis,
	apex: apex,
	appendix: appendix,
	automaton: automaton,
	axis: axis,
	bacillus: bacillus,
	bacterium: bacterium,
	barracks: barracks,
	basis: basis,
	beau: beau,
	bison: bison,
	buffalo: buffalo,
	bureau: bureau,
	cactus: cactus,
	calf: calf,
	carp: carp,
	census: census,
	chassis: chassis,
	cherub: cherub,
	child: child,
	cod: cod,
	codex: codex,
	concerto: concerto,
	corpus: corpus,
	crisis: crisis,
	criterion: criterion,
	curriculum: curriculum,
	datum: datum,
	deer: deer,
	diagnosis: diagnosis,
	die: die,
	dwarf: dwarf,
	echo: echo,
	elf: elf,
	elk: elk,
	ellipsis: ellipsis,
	embargo: embargo,
	emphasis: emphasis,
	erratum: erratum,
	fez: fez,
	firmware: firmware,
	fish: fish,
	focus: focus,
	foot: foot,
	formula: formula,
	fungus: fungus,
	gallows: gallows,
	genus: genus,
	goose: goose,
	graffito: graffito,
	grouse: grouse,
	half: half,
	hero: hero,
	hoof: hoof,
	hovercraft: hovercraft,
	hypothesis: hypothesis,
	index: index,
	kakapo: kakapo,
	knife: knife,
	larva: larva,
	leaf: leaf,
	libretto: libretto,
	life: life,
	loaf: loaf,
	locus: locus,
	louse: louse,
	man: man,
	matrix: matrix$1,
	means: means,
	medium: medium,
	memorandum: memorandum,
	millennium: millennium,
	minutia: minutia,
	moose: moose,
	mouse: mouse,
	nebula: nebula,
	nemesis: nemesis,
	neurosis: neurosis,
	news: news,
	nucleus: nucleus,
	oasis: oasis,
	offspring: offspring,
	opus: opus,
	ovum: ovum,
	ox: ox,
	paralysis: paralysis,
	parenthesis: parenthesis,
	person: person,
	phenomenon: phenomenon,
	phylum: phylum,
	pike: pike,
	polyhedron: polyhedron,
	potato: potato,
	prognosis: prognosis,
	quiz: quiz,
	radius: radius,
	referendum: referendum,
	salmon: salmon,
	scarf: scarf,
	self: self$1,
	series: series,
	sheep: sheep,
	shelf: shelf,
	shrimp: shrimp,
	spacecraft: spacecraft,
	species: species,
	spectrum: spectrum,
	squid: squid,
	stimulus: stimulus,
	stratum: stratum,
	swine: swine,
	syllabus: syllabus,
	symposium: symposium,
	synopsis: synopsis,
	synthesis: synthesis,
	tableau: tableau,
	that: that,
	thesis: thesis,
	thief: thief,
	tomato: tomato,
	tooth: tooth,
	trout: trout,
	tuna: tuna,
	vertebra: vertebra,
	vertex: vertex,
	veto: veto,
	vita: vita,
	vortex: vortex,
	watercraft: watercraft,
	wharf: wharf,
	wife: wife,
	wolf: wolf,
	woman: woman,
	"château": "châteaus",
	"faux pas": "faux pas"
};

var irregularPlurals$1 = Object.freeze({
	addendum: addendum,
	aircraft: aircraft,
	alga: alga,
	alumna: alumna,
	alumnus: alumnus,
	amoeba: amoeba,
	analysis: analysis,
	antenna: antenna,
	antithesis: antithesis,
	apex: apex,
	appendix: appendix,
	automaton: automaton,
	axis: axis,
	bacillus: bacillus,
	bacterium: bacterium,
	barracks: barracks,
	basis: basis,
	beau: beau,
	bison: bison,
	buffalo: buffalo,
	bureau: bureau,
	cactus: cactus,
	calf: calf,
	carp: carp,
	census: census,
	chassis: chassis,
	cherub: cherub,
	child: child,
	cod: cod,
	codex: codex,
	concerto: concerto,
	corpus: corpus,
	crisis: crisis,
	criterion: criterion,
	curriculum: curriculum,
	datum: datum,
	deer: deer,
	diagnosis: diagnosis,
	die: die,
	dwarf: dwarf,
	echo: echo,
	elf: elf,
	elk: elk,
	ellipsis: ellipsis,
	embargo: embargo,
	emphasis: emphasis,
	erratum: erratum,
	fez: fez,
	firmware: firmware,
	fish: fish,
	focus: focus,
	foot: foot,
	formula: formula,
	fungus: fungus,
	gallows: gallows,
	genus: genus,
	goose: goose,
	graffito: graffito,
	grouse: grouse,
	half: half,
	hero: hero,
	hoof: hoof,
	hovercraft: hovercraft,
	hypothesis: hypothesis,
	index: index,
	kakapo: kakapo,
	knife: knife,
	larva: larva,
	leaf: leaf,
	libretto: libretto,
	life: life,
	loaf: loaf,
	locus: locus,
	louse: louse,
	man: man,
	matrix: matrix$1,
	means: means,
	medium: medium,
	memorandum: memorandum,
	millennium: millennium,
	minutia: minutia,
	moose: moose,
	mouse: mouse,
	nebula: nebula,
	nemesis: nemesis,
	neurosis: neurosis,
	news: news,
	nucleus: nucleus,
	oasis: oasis,
	offspring: offspring,
	opus: opus,
	ovum: ovum,
	ox: ox,
	paralysis: paralysis,
	parenthesis: parenthesis,
	person: person,
	phenomenon: phenomenon,
	phylum: phylum,
	pike: pike,
	polyhedron: polyhedron,
	potato: potato,
	prognosis: prognosis,
	quiz: quiz,
	radius: radius,
	referendum: referendum,
	salmon: salmon,
	scarf: scarf,
	self: self$1,
	series: series,
	sheep: sheep,
	shelf: shelf,
	shrimp: shrimp,
	spacecraft: spacecraft,
	species: species,
	spectrum: spectrum,
	squid: squid,
	stimulus: stimulus,
	stratum: stratum,
	swine: swine,
	syllabus: syllabus,
	symposium: symposium,
	synopsis: synopsis,
	synthesis: synthesis,
	tableau: tableau,
	that: that,
	thesis: thesis,
	thief: thief,
	tomato: tomato,
	tooth: tooth,
	trout: trout,
	tuna: tuna,
	vertebra: vertebra,
	vertex: vertex,
	veto: veto,
	vita: vita,
	vortex: vortex,
	watercraft: watercraft,
	wharf: wharf,
	wife: wife,
	wolf: wolf,
	woman: woman,
	default: irregularPlurals
});

var irregularPlurals$2 = ( irregularPlurals$1 && irregularPlurals ) || irregularPlurals$1;

var plur = function (str, plural, count) {
	if (typeof plural === 'number') {
		count = plural;
	}

	if (str in irregularPlurals$2) {
		plural = irregularPlurals$2[str];
	} else if (typeof plural !== 'string') {
		plural = (str.replace(/(?:s|x|z|ch|sh)$/i, '$&e').replace(/([^aeiou])y$/i, '$1ie') + 's')
			.replace(/i?e?s$/i, function (m) {
				var isTailLowerCase = str.slice(-1) === str.slice(-1).toLowerCase();
				return isTailLowerCase ? m.toLowerCase() : m.toUpperCase();
			});
	}

	return count === 1 ? str : plural;
};

var prettyMs = createCommonjsModule(function (module) {
module.exports = (ms, opts) => {
	if (!Number.isFinite(ms)) {
		throw new TypeError('Expected a finite number');
	}

	opts = opts || {};

	if (ms < 1000) {
		const msDecimalDigits = typeof opts.msDecimalDigits === 'number' ? opts.msDecimalDigits : 0;
		return (msDecimalDigits ? ms.toFixed(msDecimalDigits) : Math.ceil(ms)) + (opts.verbose ? ' ' + plur('millisecond', Math.ceil(ms)) : 'ms');
	}

	const ret = [];

	const add = (val, long, short, valStr) => {
		if (val === 0) {
			return;
		}

		const postfix = opts.verbose ? ' ' + plur(long, val) : short;

		ret.push((valStr || val) + postfix);
	};

	const parsed = parseMs(ms);

	add(Math.trunc(parsed.days / 365), 'year', 'y');
	add(parsed.days % 365, 'day', 'd');
	add(parsed.hours, 'hour', 'h');
	add(parsed.minutes, 'minute', 'm');

	if (opts.compact) {
		add(parsed.seconds, 'second', 's');
		return '~' + ret[0];
	}

	const sec = ms / 1000 % 60;
	const secDecimalDigits = typeof opts.secDecimalDigits === 'number' ? opts.secDecimalDigits : 1;
	const secStr = sec.toFixed(secDecimalDigits).replace(/\.0+$/, '');
	add(sec, 'second', 's', secStr);

	return ret.join(' ');
};
});

function mapSequence ( array, fn ) {
	const results = [];
	let promise = Promise.resolve();

	function next ( member, i ) {
		return Promise.resolve( fn( member ) ).then( value => results[i] = value );
	}

	for ( let i = 0; i < array.length; i += 1 ) {
		promise = promise.then( () => next( array[i], i ) );
	}

	return promise.then( () => results );
}

let SOURCEMAPPING_URL = 'sourceMa';
SOURCEMAPPING_URL += 'ppingURL';

var SOURCEMAPPING_URL$1 = SOURCEMAPPING_URL;

function build ( inputOptions, outputOptions, warnings, silent ) {
	const useStdout = outputOptions.length === 1 && !outputOptions[0].file;

	const start = Date.now();
	const files = useStdout ? [ 'stdout' ] : outputOptions.map( t => relativeId( t.file ) );
	if ( !silent ) { stderr( chalk.cyan( `\n${chalk.bold( inputOptions.input )} → ${chalk.bold( files.join( ', ' ) )}...` ) ); }

	return rollup.rollup( inputOptions )
		.then( bundle => {
			if ( useStdout ) {
				const output = outputOptions[0];
				if ( output.sourcemap && output.sourcemap !== 'inline' ) {
					handleError({
						code: 'MISSING_OUTPUT_OPTION',
						message: 'You must specify an --output (-o) option when creating a file with a sourcemap'
					});
				}

				return bundle.generate(output).then( (ref) => {
					var code = ref.code;
					var map = ref.map;

					if ( output.sourcemap === 'inline' ) {
						code += `\n//# ${SOURCEMAPPING_URL$1}=${map.toUrl()}\n`;
					}

					process.stdout.write( code );
				});
			}

			return mapSequence( outputOptions, output => {
				return bundle.write( output );
			});
		})
		.then( () => {
			warnings.flush();
			if ( !silent ) { stderr( chalk.green( `created ${chalk.bold( files.join( ', ' ) )} in ${chalk.bold(prettyMs( Date.now() - start))}` ) ); }
		})
		.catch( handleError );
}

var signals$1 = createCommonjsModule(function (module) {
// This is not the set of all possible signals.
//
// It IS, however, the set of all signals that trigger
// an exit on either Linux or BSD systems.  Linux is a
// superset of the signal names supported on BSD, and
// the unknown signals just fail to register, so we can
// catch that easily enough.
//
// Don't bother with SIGKILL.  It's uncatchable, which
// means that we can't fire any callbacks anyway.
//
// If a user does happen to register a handler on a non-
// fatal signal like SIGWINCH or something, and then
// exit, it'll end up firing `process.emit('exit')`, so
// the handler will be fired anyway.
//
// SIGBUS, SIGFPE, SIGSEGV and SIGILL, when not raised
// artificially, inherently leave the process in a
// state from which it is not safe to try and enter JS
// listeners.
module.exports = [
  'SIGABRT',
  'SIGALRM',
  'SIGHUP',
  'SIGINT',
  'SIGTERM'
];

if (process.platform !== 'win32') {
  module.exports.push(
    'SIGVTALRM',
    'SIGXCPU',
    'SIGXFSZ',
    'SIGUSR2',
    'SIGTRAP',
    'SIGSYS',
    'SIGQUIT',
    'SIGIOT'
    // should detect profiler and enable/disable accordingly.
    // see #21
    // 'SIGPROF'
  );
}

if (process.platform === 'linux') {
  module.exports.push(
    'SIGIO',
    'SIGPOLL',
    'SIGPWR',
    'SIGSTKFLT',
    'SIGUNUSED'
  );
}
});

// Note: since nyc uses this module to output coverage, any lines
// that are in the direct sync flow of nyc's outputCoverage are
// ignored, since we can never get coverage for them.

var signals = signals$1;

var EE = events;
/* istanbul ignore if */
if (typeof EE !== 'function') {
  EE = EE.EventEmitter;
}

var emitter;
if (process.__signal_exit_emitter__) {
  emitter = process.__signal_exit_emitter__;
} else {
  emitter = process.__signal_exit_emitter__ = new EE();
  emitter.count = 0;
  emitter.emitted = {};
}

// Because this emitter is a global, we have to check to see if a
// previous version of this library failed to enable infinite listeners.
// I know what you're about to say.  But literally everything about
// signal-exit is a compromise with evil.  Get used to it.
if (!emitter.infinite) {
  emitter.setMaxListeners(Infinity);
  emitter.infinite = true;
}

var signalExit = function (cb, opts) {
  assert.equal(typeof cb, 'function', 'a callback must be provided for exit handler');

  if (loaded === false) {
    load();
  }

  var ev = 'exit';
  if (opts && opts.alwaysLast) {
    ev = 'afterexit';
  }

  var remove = function () {
    emitter.removeListener(ev, cb);
    if (emitter.listeners('exit').length === 0 &&
        emitter.listeners('afterexit').length === 0) {
      unload();
    }
  };
  emitter.on(ev, cb);

  return remove
};

var unload_1 = unload;
function unload () {
  if (!loaded) {
    return
  }
  loaded = false;

  signals.forEach(function (sig) {
    try {
      process.removeListener(sig, sigListeners[sig]);
    } catch (er) {}
  });
  process.emit = originalProcessEmit;
  process.reallyExit = originalProcessReallyExit;
  emitter.count -= 1;
}

function emit (event, code, signal) {
  if (emitter.emitted[event]) {
    return
  }
  emitter.emitted[event] = true;
  emitter.emit(event, code, signal);
}

// { <signal>: <listener fn>, ... }
var sigListeners = {};
signals.forEach(function (sig) {
  sigListeners[sig] = function listener () {
    // If there are no other listeners, an exit is coming!
    // Simplest way: remove us and then re-send the signal.
    // We know that this will kill the process, so we can
    // safely emit now.
    var listeners = process.listeners(sig);
    if (listeners.length === emitter.count) {
      unload();
      emit('exit', null, sig);
      /* istanbul ignore next */
      emit('afterexit', null, sig);
      /* istanbul ignore next */
      process.kill(process.pid, sig);
    }
  };
});

var signals_1 = function () {
  return signals
};

var load_1 = load;

var loaded = false;

function load () {
  if (loaded) {
    return
  }
  loaded = true;

  // This is the number of onSignalExit's that are in play.
  // It's important so that we can count the correct number of
  // listeners on signals, and don't wait for the other one to
  // handle it instead of us.
  emitter.count += 1;

  signals = signals.filter(function (sig) {
    try {
      process.on(sig, sigListeners[sig]);
      return true
    } catch (er) {
      return false
    }
  });

  process.emit = processEmit;
  process.reallyExit = processReallyExit;
}

var originalProcessReallyExit = process.reallyExit;
function processReallyExit (code) {
  process.exitCode = code || 0;
  emit('exit', process.exitCode, null);
  /* istanbul ignore next */
  emit('afterexit', process.exitCode, null);
  /* istanbul ignore next */
  originalProcessReallyExit.call(process, process.exitCode);
}

var originalProcessEmit = process.emit;
function processEmit (ev, arg) {
  if (ev === 'exit') {
    if (arg !== undefined) {
      process.exitCode = arg;
    }
    var ret = originalProcessEmit.apply(this, arguments);
    emit('exit', process.exitCode, null);
    /* istanbul ignore next */
    emit('afterexit', process.exitCode, null);
    return ret
  } else {
    return originalProcessEmit.apply(this, arguments)
  }
}

signalExit.unload = unload_1;
signalExit.signals = signals_1;
signalExit.load = load_1;

var timeZone = createCommonjsModule(function (module) {
module.exports = date => {
	const offset = (date || new Date()).getTimezoneOffset();
	const absOffset = Math.abs(offset);
	const hours = Math.floor(absOffset / 60);
	const minutes = absOffset % 60;
	const minutesOut = minutes > 0 ? ':' + ('0' + minutes).slice(-2) : '';

	return (offset < 0 ? '+' : '-') + hours + minutesOut;
};
});

var dateTime = createCommonjsModule(function (module) {
module.exports = options => {
	options = Object.assign({
		date: new Date(),
		local: true,
		showTimeZone: false,
		showMilliseconds: false
	}, options);

	let date = options.date;

	if (options.local) {
		// Offset the date so it will return the correct value when getting the ISO string
		date = new Date(date.getTime() - (date.getTimezoneOffset() * 60000));
	}

	let end = '';

	if (options.showTimeZone) {
		end = ' UTC' + (options.local ? timeZone(date) : '');
	}

	if (options.showMilliseconds && date.getUTCMilliseconds() > 0) {
		end = ` ${date.getUTCMilliseconds()}ms${end}`;
	}

	return date
		.toISOString()
		.replace(/T/, ' ')
		.replace(/\..+/, end);
};
});

var ansiEscapes = createCommonjsModule(function (module) {
const x = module.exports;
const ESC = '\u001B[';
const isTerminalApp = process.env.TERM_PROGRAM === 'Apple_Terminal';

x.cursorTo = (x, y) => {
	if (typeof x !== 'number') {
		throw new TypeError('The `x` argument is required');
	}

	if (typeof y !== 'number') {
		return ESC + (x + 1) + 'G';
	}

	return ESC + (y + 1) + ';' + (x + 1) + 'H';
};

x.cursorMove = (x, y) => {
	if (typeof x !== 'number') {
		throw new TypeError('The `x` argument is required');
	}

	let ret = '';

	if (x < 0) {
		ret += ESC + (-x) + 'D';
	} else if (x > 0) {
		ret += ESC + x + 'C';
	}

	if (y < 0) {
		ret += ESC + (-y) + 'A';
	} else if (y > 0) {
		ret += ESC + y + 'B';
	}

	return ret;
};

x.cursorUp = count => ESC + (typeof count === 'number' ? count : 1) + 'A';
x.cursorDown = count => ESC + (typeof count === 'number' ? count : 1) + 'B';
x.cursorForward = count => ESC + (typeof count === 'number' ? count : 1) + 'C';
x.cursorBackward = count => ESC + (typeof count === 'number' ? count : 1) + 'D';

x.cursorLeft = ESC + 'G';
x.cursorSavePosition = ESC + (isTerminalApp ? '7' : 's');
x.cursorRestorePosition = ESC + (isTerminalApp ? '8' : 'u');
x.cursorGetPosition = ESC + '6n';
x.cursorNextLine = ESC + 'E';
x.cursorPrevLine = ESC + 'F';
x.cursorHide = ESC + '?25l';
x.cursorShow = ESC + '?25h';

x.eraseLines = count => {
	let clear = '';

	for (let i = 0; i < count; i++) {
		clear += x.eraseLine + (i < count - 1 ? x.cursorUp() : '');
	}

	if (count) {
		clear += x.cursorLeft;
	}

	return clear;
};

x.eraseEndLine = ESC + 'K';
x.eraseStartLine = ESC + '1K';
x.eraseLine = ESC + '2K';
x.eraseDown = ESC + 'J';
x.eraseUp = ESC + '1J';
x.eraseScreen = ESC + '2J';
x.scrollUp = ESC + 'S';
x.scrollDown = ESC + 'T';

x.clearScreen = '\u001Bc';
x.beep = '\u0007';

x.image = (buf, opts) => {
	opts = opts || {};

	let ret = '\u001B]1337;File=inline=1';

	if (opts.width) {
		ret += `;width=${opts.width}`;
	}

	if (opts.height) {
		ret += `;height=${opts.height}`;
	}

	if (opts.preserveAspectRatio === false) {
		ret += ';preserveAspectRatio=0';
	}

	return ret + ':' + buf.toString('base64') + '\u0007';
};

x.iTerm = {};

x.iTerm.setCwd = cwd => '\u001B]50;CurrentDir=' + (cwd || process.cwd()) + '\u0007';
});

const SHOW_ALTERNATE_SCREEN = '\u001B[?1049h';
const HIDE_ALTERNATE_SCREEN = '\u001B[?1049l';

function alternateScreen ( enabled ) {
	if (!enabled) {
		let needAnnounce = true;
		return {
			open() {},
			close() {},
			reset( heading ) {
				if ( needAnnounce ) {
					stderr( heading );
					needAnnounce = false;
				}
			}
		};
	}

	return {
		open() {
			process.stderr.write(SHOW_ALTERNATE_SCREEN);
		},
		close() {
			process.stderr.write(HIDE_ALTERNATE_SCREEN);
		},
		reset( heading ) {
			stderr( `${ansiEscapes.eraseScreen}${ansiEscapes.cursorTo(0, 0)}${heading}` );
		}
	};
}

function watch$1(configFile, configs, command, silent) {
	const isTTY = Boolean(process.stderr.isTTY);

	const screen = alternateScreen(isTTY);
	screen.open();

	const warnings = batchWarnings();

	let watcher;
	let configWatcher;

	function start(configs) {
		screen.reset( chalk.underline( `rollup v${rollup.VERSION}` ) );

		let screenWriter = screen.reset;
		configs = configs.map(options => {
			const merged = mergeOptions(options, command);
			const onwarn = merged.inputOptions.onwarn;
			if ( onwarn ) {
				merged.inputOptions.onwarn = warning => {
					onwarn( warning, warnings.add );
				};
			} else {
				merged.inputOptions.onwarn = warnings.add;
			}

			const result = Object.assign({}, merged.inputOptions, {
				output: merged.outputOptions
			});

			if (merged.deprecations.length) {
				if (!result.watch) { result.watch = {}; }
				result.watch._deprecations = merged.deprecations;
			}

			if (merged.inputOptions.watch && merged.inputOptions.watch.clearScreen === false) {
				screenWriter = stderr;
			}

			return result;
		});

		watcher = rollup.watch(configs);

		watcher.on('event', event => {
			switch (event.code) {
				case 'FATAL':
					screen.close();
					handleError(event.error, true);
					process.exit(1);
					break;

				case 'ERROR':
					warnings.flush();
					handleError(event.error, true);
					break;

				case 'START':
					screenWriter( chalk.underline( `rollup v${rollup.VERSION}` ) );
					break;

				case 'BUNDLE_START':
					if ( !silent ) { stderr( chalk.cyan( `bundles ${chalk.bold( event.input )} → ${chalk.bold( event.output.map( relativeId ).join( ', ' ) )}...` ) ); }
					break;

				case 'BUNDLE_END':
					warnings.flush();
					if ( !silent ) { stderr( chalk.green( `created ${chalk.bold( event.output.map( relativeId ).join( ', ' ) )} in ${chalk.bold(prettyMs(event.duration))}` ) ); }
					break;

				case 'END':
					if ( !silent && isTTY ) {
						stderr( `\n[${dateTime()}] waiting for changes...` );
					}
			}
		});
	}

	// catch ctrl+c, kill, and uncaught errors
	const removeOnExit = signalExit(close);
	process.on('uncaughtException', close);

	// only listen to stdin if it is a pipe
	if (!process.stdin.isTTY) {
		process.stdin.on('end', close); // in case we ever support stdin!
		process.stdin.resume();
	}

	function close() {
		removeOnExit();
		process.removeListener('uncaughtException', close);
		// removing a non-existent listener is a no-op
		process.stdin.removeListener('end', close);

		screen.close();
		watcher.close();

		if (configWatcher) { configWatcher.close(); }
	}

	start(configs);

	if (configFile && !configFile.startsWith('node:')) {
		let restarting = false;
		let aborted = false;
		let configFileData = fs__default.readFileSync(configFile, 'utf-8');

		const restart = () => {
			const newConfigFileData = fs__default.readFileSync(configFile, 'utf-8');
			if (newConfigFileData === configFileData) { return; }
			configFileData = newConfigFileData;

			if (restarting) {
				aborted = true;
				return;
			}

			restarting = true;

			loadConfigFile(configFile, silent)
				.then(configs => {
					restarting = false;

					if (aborted) {
						aborted = false;
						restart();
					} else {
						watcher.close();
						start(configs);
					}
				})
				.catch(err => {
					handleError(err, true);
				});
		};

		configWatcher = fs__default.watch(configFile, event => {
			if (event === 'change') { restart(); }
		});
	}
}

function runRollup ( command ) {
	if ( command._.length > 1 ) {
		handleError({
			code: 'ONE_AT_A_TIME',
			message: 'rollup can only bundle one file at a time'
		});
	}

	if ( command._.length === 1 ) {
		if ( command.input ) {
			handleError({
				code: 'DUPLICATE_IMPORT_OPTIONS',
				message: 'use --input, or pass input path as argument'
			});
		}

		command.input = command._[0];
	}

	if ( command.environment ) {
		const environment = Array.isArray(command.environment) ? command.environment : [ command.environment ];

		environment.forEach( arg => {
			arg.split( ',' ).forEach( pair => {
				var ref = pair.split( ':' );
				var key = ref[0];
				var value = ref[1];
				if ( value ) {
					process.env[ key ] = value;
				} else {
					process.env[ key ] = true;
				}
			});
		});
	}

	let configFile = command.config === true ? 'rollup.config.js' : command.config;

	if ( configFile ) {
		if ( configFile.slice( 0, 5 ) === 'node:' ) {
			const pkgName = configFile.slice( 5 );
			try {
				configFile = requireRelative_1.resolve( `rollup-config-${pkgName}`, process.cwd() );
			} catch ( err ) {
				try {
					configFile = requireRelative_1.resolve( pkgName, process.cwd() );
				} catch ( err ) {
					if ( err.code === 'MODULE_NOT_FOUND' ) {
						handleError({
							code: 'MISSING_EXTERNAL_CONFIG',
							message: `Could not resolve config file ${configFile}`
						});
					}

					throw err;
				}
			}
		} else {
			// find real path of config so it matches what Node provides to callbacks in require.extensions
			configFile = fs.realpathSync( configFile );
		}

		if (command.watch) { process.env.ROLLUP_WATCH = 'true'; }

		loadConfigFile(configFile, command.silent)
			.then(normalized => execute( configFile, normalized, command ))
			.catch(handleError);
	} else {
		return execute( configFile, [{}], command );
	}
}

function execute ( configFile, configs, command ) {
	if ( command.watch ) {
		watch$1( configFile, configs, command, command.silent );
	} else {
		return sequence( configs, config => {
			var ref = mergeOptions( config, command );
			var inputOptions = ref.inputOptions;
			var outputOptions = ref.outputOptions;
			var deprecations = ref.deprecations;

			const warnings = batchWarnings();

			const onwarn = inputOptions.onwarn;
			if ( onwarn ) {
				inputOptions.onwarn = warning => {
					onwarn( warning, warnings.add );
				};
			} else {
				inputOptions.onwarn = warnings.add;
			}

			if (deprecations.length) {
				inputOptions.onwarn({
					code: 'DEPRECATED_OPTIONS',
					message: `The following options have been renamed — please update your config: ${deprecations.map(option => `${option.old} -> ${option.new}`).join(', ')}`,
					deprecations
				});
			}

			return build( inputOptions, outputOptions, warnings, command.silent );
		});
	}
}

const command = minimist( process.argv.slice( 2 ), {
	alias: {
		// Aliases
		strict: 'useStrict',

		// Short options
		c: 'config',
		d: 'indent',
		e: 'external',
		f: 'output.format',
		g: 'globals',
		h: 'help',
		i: 'input',
		l: 'legacy',
		m: 'sourcemap',
		n: 'name',
		o: 'output.file',
		v: 'version',
		w: 'watch'
	}
});

if ( command.help || ( process.argv.length <= 2 && process.stdin.isTTY ) ) {
	console.log( `\n${help.replace('__VERSION__', version)}\n` ); // eslint-disable-line no-console
}

else if ( command.version ) {
	console.log( `rollup version ${version}` ); // eslint-disable-line no-console
}

else {
	try {
		require('source-map-support').install();
	} catch (err) {
		// do nothing
	}

	runRollup( command );
}