@burst/cli/lib/workers/prettier.js

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

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

var prettier = _interopDefault(require('prettier'));

var isPure = false;

// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
var global = typeof window == 'object' && window && window.Math == Math ? window
  : typeof self == 'object' && self && self.Math == Math ? self
  // eslint-disable-next-line no-new-func
  : Function('return this')();

var fails = function (exec) {
  try {
    return !!exec();
  } catch (error) {
    return true;
  }
};

// Thank's IE8 for his funny defineProperty
var descriptors = !fails(function () {
  return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7;
});

var nativePropertyIsEnumerable = {}.propertyIsEnumerable;
var nativeGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;

// Nashorn ~ JDK8 bug
var NASHORN_BUG = nativeGetOwnPropertyDescriptor && !nativePropertyIsEnumerable.call({ 1: 2 }, 1);

var f = NASHORN_BUG ? function propertyIsEnumerable(V) {
  var descriptor = nativeGetOwnPropertyDescriptor(this, V);
  return !!descriptor && descriptor.enumerable;
} : nativePropertyIsEnumerable;

var objectPropertyIsEnumerable = {
	f: f
};

var createPropertyDescriptor = function (bitmap, value) {
  return {
    enumerable: !(bitmap & 1),
    configurable: !(bitmap & 2),
    writable: !(bitmap & 4),
    value: value
  };
};

var toString = {}.toString;

var classofRaw = function (it) {
  return toString.call(it).slice(8, -1);
};

// fallback for non-array-like ES3 and non-enumerable old V8 strings


var split = ''.split;

var indexedObject = fails(function () {
  // throws an error in rhino, see https://github.com/mozilla/rhino/issues/346
  // eslint-disable-next-line no-prototype-builtins
  return !Object('z').propertyIsEnumerable(0);
}) ? function (it) {
  return classofRaw(it) == 'String' ? split.call(it, '') : Object(it);
} : Object;

// `RequireObjectCoercible` abstract operation
// https://tc39.github.io/ecma262/#sec-requireobjectcoercible
var requireObjectCoercible = function (it) {
  if (it == undefined) throw TypeError("Can't call method on " + it);
  return it;
};

// toObject with fallback for non-array-like ES3 strings



var toIndexedObject = function (it) {
  return indexedObject(requireObjectCoercible(it));
};

var isObject = function (it) {
  return typeof it === 'object' ? it !== null : typeof it === 'function';
};

// 7.1.1 ToPrimitive(input [, PreferredType])

// instead of the ES6 spec version, we didn't implement @@toPrimitive case
// and the second argument - flag - preferred type is a string
var toPrimitive = function (it, S) {
  if (!isObject(it)) return it;
  var fn, val;
  if (S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;
  if (typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it))) return val;
  if (!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;
  throw TypeError("Can't convert object to primitive value");
};

var hasOwnProperty = {}.hasOwnProperty;

var has = function (it, key) {
  return hasOwnProperty.call(it, key);
};

var document$1 = global.document;
// typeof document.createElement is 'object' in old IE
var exist = isObject(document$1) && isObject(document$1.createElement);

var documentCreateElement = function (it) {
  return exist ? document$1.createElement(it) : {};
};

// Thank's IE8 for his funny defineProperty
var ie8DomDefine = !descriptors && !fails(function () {
  return Object.defineProperty(documentCreateElement('div'), 'a', {
    get: function () { return 7; }
  }).a != 7;
});

var nativeGetOwnPropertyDescriptor$1 = Object.getOwnPropertyDescriptor;

var f$1 = descriptors ? nativeGetOwnPropertyDescriptor$1 : function getOwnPropertyDescriptor(O, P) {
  O = toIndexedObject(O);
  P = toPrimitive(P, true);
  if (ie8DomDefine) try {
    return nativeGetOwnPropertyDescriptor$1(O, P);
  } catch (error) { /* empty */ }
  if (has(O, P)) return createPropertyDescriptor(!objectPropertyIsEnumerable.f.call(O, P), O[P]);
};

var objectGetOwnPropertyDescriptor = {
	f: f$1
};

var anObject = function (it) {
  if (!isObject(it)) {
    throw TypeError(String(it) + ' is not an object');
  } return it;
};

var nativeDefineProperty = Object.defineProperty;

var f$2 = descriptors ? nativeDefineProperty : function defineProperty(O, P, Attributes) {
  anObject(O);
  P = toPrimitive(P, true);
  anObject(Attributes);
  if (ie8DomDefine) try {
    return nativeDefineProperty(O, P, Attributes);
  } catch (error) { /* empty */ }
  if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported');
  if ('value' in Attributes) O[P] = Attributes.value;
  return O;
};

var objectDefineProperty = {
	f: f$2
};

var hide = descriptors ? function (object, key, value) {
  return objectDefineProperty.f(object, key, createPropertyDescriptor(1, value));
} : function (object, key, value) {
  object[key] = value;
  return object;
};

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

var setGlobal = function (key, value) {
  try {
    hide(global, key, value);
  } catch (error) {
    global[key] = value;
  } return value;
};

var shared = createCommonjsModule(function (module) {
var SHARED = '__core-js_shared__';
var store = global[SHARED] || setGlobal(SHARED, {});

(module.exports = function (key, value) {
  return store[key] || (store[key] = value !== undefined ? value : {});
})('versions', []).push({
  version: '3.0.1',
  mode: 'global',
  copyright: '© 2019 Denis Pushkarev (zloirock.ru)'
});
});

var functionToString = shared('native-function-to-string', Function.toString);

var WeakMap = global.WeakMap;

var nativeWeakMap = typeof WeakMap === 'function' && /native code/.test(functionToString.call(WeakMap));

var id = 0;
var postfix = Math.random();

var uid = function (key) {
  return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + postfix).toString(36));
};

var shared$1 = shared('keys');


var sharedKey = function (key) {
  return shared$1[key] || (shared$1[key] = uid(key));
};

var hiddenKeys = {};

var WeakMap$1 = global.WeakMap;
var set, get, has$1;

var enforce = function (it) {
  return has$1(it) ? get(it) : set(it, {});
};

var getterFor = function (TYPE) {
  return function (it) {
    var state;
    if (!isObject(it) || (state = get(it)).type !== TYPE) {
      throw TypeError('Incompatible receiver, ' + TYPE + ' required');
    } return state;
  };
};

if (nativeWeakMap) {
  var store = new WeakMap$1();
  var wmget = store.get;
  var wmhas = store.has;
  var wmset = store.set;
  set = function (it, metadata) {
    wmset.call(store, it, metadata);
    return metadata;
  };
  get = function (it) {
    return wmget.call(store, it) || {};
  };
  has$1 = function (it) {
    return wmhas.call(store, it);
  };
} else {
  var STATE = sharedKey('state');
  hiddenKeys[STATE] = true;
  set = function (it, metadata) {
    hide(it, STATE, metadata);
    return metadata;
  };
  get = function (it) {
    return has(it, STATE) ? it[STATE] : {};
  };
  has$1 = function (it) {
    return has(it, STATE);
  };
}

var internalState = {
  set: set,
  get: get,
  has: has$1,
  enforce: enforce,
  getterFor: getterFor
};

var redefine = createCommonjsModule(function (module) {
var getInternalState = internalState.get;
var enforceInternalState = internalState.enforce;
var TEMPLATE = String(functionToString).split('toString');

shared('inspectSource', function (it) {
  return functionToString.call(it);
});

(module.exports = function (O, key, value, options) {
  var unsafe = options ? !!options.unsafe : false;
  var simple = options ? !!options.enumerable : false;
  var noTargetGet = options ? !!options.noTargetGet : false;
  if (typeof value == 'function') {
    if (typeof key == 'string' && !has(value, 'name')) hide(value, 'name', key);
    enforceInternalState(value).source = TEMPLATE.join(typeof key == 'string' ? key : '');
  }
  if (O === global) {
    if (simple) O[key] = value;
    else setGlobal(key, value);
    return;
  } else if (!unsafe) {
    delete O[key];
  } else if (!noTargetGet && O[key]) {
    simple = true;
  }
  if (simple) O[key] = value;
  else hide(O, key, value);
// add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
})(Function.prototype, 'toString', function toString() {
  return typeof this == 'function' && getInternalState(this).source || functionToString.call(this);
});
});

var ceil = Math.ceil;
var floor = Math.floor;

// `ToInteger` abstract operation
// https://tc39.github.io/ecma262/#sec-tointeger
var toInteger = function (argument) {
  return isNaN(argument = +argument) ? 0 : (argument > 0 ? floor : ceil)(argument);
};

var min = Math.min;

// `ToLength` abstract operation
// https://tc39.github.io/ecma262/#sec-tolength
var toLength = function (argument) {
  return argument > 0 ? min(toInteger(argument), 0x1FFFFFFFFFFFFF) : 0; // 2 ** 53 - 1 == 9007199254740991
};

var max = Math.max;
var min$1 = Math.min;

// Helper for a popular repeating case of the spec:
// Let integer be ? ToInteger(index).
// If integer < 0, let result be max((length + integer), 0); else let result be min(length, length).
var toAbsoluteIndex = function (index, length) {
  var integer = toInteger(index);
  return integer < 0 ? max(integer + length, 0) : min$1(integer, length);
};

// `Array.prototype.{ indexOf, includes }` methods implementation
// false -> Array#indexOf
// https://tc39.github.io/ecma262/#sec-array.prototype.indexof
// true  -> Array#includes
// https://tc39.github.io/ecma262/#sec-array.prototype.includes
var arrayIncludes = function (IS_INCLUDES) {
  return function ($this, el, fromIndex) {
    var O = toIndexedObject($this);
    var length = toLength(O.length);
    var index = toAbsoluteIndex(fromIndex, length);
    var value;
    // Array#includes uses SameValueZero equality algorithm
    // eslint-disable-next-line no-self-compare
    if (IS_INCLUDES && el != el) while (length > index) {
      value = O[index++];
      // eslint-disable-next-line no-self-compare
      if (value != value) return true;
    // Array#indexOf ignores holes, Array#includes - not
    } else for (;length > index; index++) if (IS_INCLUDES || index in O) {
      if (O[index] === el) return IS_INCLUDES || index || 0;
    } return !IS_INCLUDES && -1;
  };
};

var arrayIndexOf = arrayIncludes(false);


var objectKeysInternal = function (object, names) {
  var O = toIndexedObject(object);
  var i = 0;
  var result = [];
  var key;
  for (key in O) !has(hiddenKeys, key) && has(O, key) && result.push(key);
  // Don't enum bug & hidden keys
  while (names.length > i) if (has(O, key = names[i++])) {
    ~arrayIndexOf(result, key) || result.push(key);
  }
  return result;
};

// IE8- don't enum bug keys
var enumBugKeys = [
  'constructor',
  'hasOwnProperty',
  'isPrototypeOf',
  'propertyIsEnumerable',
  'toLocaleString',
  'toString',
  'valueOf'
];

// 19.1.2.7 / 15.2.3.4 Object.getOwnPropertyNames(O)

var hiddenKeys$1 = enumBugKeys.concat('length', 'prototype');

var f$3 = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
  return objectKeysInternal(O, hiddenKeys$1);
};

var objectGetOwnPropertyNames = {
	f: f$3
};

var f$4 = Object.getOwnPropertySymbols;

var objectGetOwnPropertySymbols = {
	f: f$4
};

var Reflect = global.Reflect;

// all object keys, includes non-enumerable and symbols
var ownKeys = Reflect && Reflect.ownKeys || function ownKeys(it) {
  var keys = objectGetOwnPropertyNames.f(anObject(it));
  var getOwnPropertySymbols = objectGetOwnPropertySymbols.f;
  return getOwnPropertySymbols ? keys.concat(getOwnPropertySymbols(it)) : keys;
};

var copyConstructorProperties = function (target, source) {
  var keys = ownKeys(source);
  var defineProperty = objectDefineProperty.f;
  var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
  for (var i = 0; i < keys.length; i++) {
    var key = keys[i];
    if (!has(target, key)) defineProperty(target, key, getOwnPropertyDescriptor(source, key));
  }
};

var replacement = /#|\.prototype\./;

var isForced = function (feature, detection) {
  var value = data[normalize(feature)];
  return value == POLYFILL ? true
    : value == NATIVE ? false
    : typeof detection == 'function' ? fails(detection)
    : !!detection;
};

var normalize = isForced.normalize = function (string) {
  return String(string).replace(replacement, '.').toLowerCase();
};

var data = isForced.data = {};
var NATIVE = isForced.NATIVE = 'N';
var POLYFILL = isForced.POLYFILL = 'P';

var isForced_1 = isForced;

var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;






/*
  options.target      - name of the target object
  options.global      - target is the global object
  options.stat        - export as static methods of target
  options.proto       - export as prototype methods of target
  options.real        - real prototype method for the `pure` version
  options.forced      - export even if the native feature is available
  options.bind        - bind methods to the target, required for the `pure` version
  options.wrap        - wrap constructors to preventing global pollution, required for the `pure` version
  options.unsafe      - use the simple assignment of property instead of delete + defineProperty
  options.sham        - add a flag to not completely full polyfills
  options.enumerable  - export as enumerable property
  options.noTargetGet - prevent calling a getter on target
*/
var _export = function (options, source) {
  var TARGET = options.target;
  var GLOBAL = options.global;
  var STATIC = options.stat;
  var FORCED, target, key, targetProperty, sourceProperty, descriptor;
  if (GLOBAL) {
    target = global;
  } else if (STATIC) {
    target = global[TARGET] || setGlobal(TARGET, {});
  } else {
    target = (global[TARGET] || {}).prototype;
  }
  if (target) for (key in source) {
    sourceProperty = source[key];
    if (options.noTargetGet) {
      descriptor = getOwnPropertyDescriptor(target, key);
      targetProperty = descriptor && descriptor.value;
    } else targetProperty = target[key];
    FORCED = isForced_1(GLOBAL ? key : TARGET + (STATIC ? '.' : '#') + key, options.forced);
    // contained in target
    if (!FORCED && targetProperty !== undefined) {
      if (typeof sourceProperty === typeof targetProperty) continue;
      copyConstructorProperties(sourceProperty, targetProperty);
    }
    // add a flag to not completely full polyfills
    if (options.sham || (targetProperty && targetProperty.sham)) {
      hide(sourceProperty, 'sham', true);
    }
    // extend global
    redefine(target, key, sourceProperty, options);
  }
};

var aFunction = function (it) {
  if (typeof it != 'function') {
    throw TypeError(String(it) + ' is not a function');
  } return it;
};

var anInstance = function (it, Constructor, name) {
  if (!(it instanceof Constructor)) {
    throw TypeError('Incorrect ' + (name ? name + ' ' : '') + 'invocation');
  } return it;
};

var iterators = {};

// Chrome 38 Symbol has incorrect toString conversion
var nativeSymbol = !fails(function () {
  // eslint-disable-next-line no-undef
  return !String(Symbol());
});

var store$1 = shared('wks');

var Symbol$1 = global.Symbol;


var wellKnownSymbol = function (name) {
  return store$1[name] || (store$1[name] = nativeSymbol && Symbol$1[name]
    || (nativeSymbol ? Symbol$1 : uid)('Symbol.' + name));
};

// check on default Array iterator

var ITERATOR = wellKnownSymbol('iterator');
var ArrayPrototype = Array.prototype;

var isArrayIteratorMethod = function (it) {
  return it !== undefined && (iterators.Array === it || ArrayPrototype[ITERATOR] === it);
};

// optional / simple context binding
var bindContext = function (fn, that, length) {
  aFunction(fn);
  if (that === undefined) return fn;
  switch (length) {
    case 0: return function () {
      return fn.call(that);
    };
    case 1: return function (a) {
      return fn.call(that, a);
    };
    case 2: return function (a, b) {
      return fn.call(that, a, b);
    };
    case 3: return function (a, b, c) {
      return fn.call(that, a, b, c);
    };
  }
  return function (/* ...args */) {
    return fn.apply(that, arguments);
  };
};

var TO_STRING_TAG = wellKnownSymbol('toStringTag');
// ES3 wrong here
var CORRECT_ARGUMENTS = classofRaw(function () { return arguments; }()) == 'Arguments';

// fallback for IE11 Script Access Denied error
var tryGet = function (it, key) {
  try {
    return it[key];
  } catch (error) { /* empty */ }
};

// getting tag from ES6+ `Object.prototype.toString`
var classof = function (it) {
  var O, tag, result;
  return it === undefined ? 'Undefined' : it === null ? 'Null'
    // @@toStringTag case
    : typeof (tag = tryGet(O = Object(it), TO_STRING_TAG)) == 'string' ? tag
    // builtinTag case
    : CORRECT_ARGUMENTS ? classofRaw(O)
    // ES3 arguments fallback
    : (result = classofRaw(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : result;
};

var ITERATOR$1 = wellKnownSymbol('iterator');


var getIteratorMethod = function (it) {
  if (it != undefined) return it[ITERATOR$1]
    || it['@@iterator']
    || iterators[classof(it)];
};

// call something on iterator step with safe closing on error
var callWithSafeIterationClosing = function (iterator, fn, value, ENTRIES) {
  try {
    return ENTRIES ? fn(anObject(value)[0], value[1]) : fn(value);
  // 7.4.6 IteratorClose(iterator, completion)
  } catch (error) {
    var returnMethod = iterator['return'];
    if (returnMethod !== undefined) anObject(returnMethod.call(iterator));
    throw error;
  }
};

var iterate = createCommonjsModule(function (module) {
var BREAK = {};

var exports = module.exports = function (iterable, fn, that, ENTRIES, ITERATOR) {
  var boundFunction = bindContext(fn, that, ENTRIES ? 2 : 1);
  var iterator, iterFn, index, length, result, step;

  if (ITERATOR) {
    iterator = iterable;
  } else {
    iterFn = getIteratorMethod(iterable);
    if (typeof iterFn != 'function') throw TypeError('Target is not iterable');
    // optimisation for array iterators
    if (isArrayIteratorMethod(iterFn)) {
      for (index = 0, length = toLength(iterable.length); length > index; index++) {
        result = ENTRIES ? boundFunction(anObject(step = iterable[index])[0], step[1]) : boundFunction(iterable[index]);
        if (result === BREAK) return BREAK;
      } return;
    }
    iterator = iterFn.call(iterable);
  }

  while (!(step = iterator.next()).done) {
    if (callWithSafeIterationClosing(iterator, boundFunction, step.value, ENTRIES) === BREAK) return BREAK;
  }
};

exports.BREAK = BREAK;
});

var ITERATOR$2 = wellKnownSymbol('iterator');
var SAFE_CLOSING = false;

try {
  var called = 0;
  var iteratorWithReturn = {
    next: function () {
      return { done: !!called++ };
    },
    'return': function () {
      SAFE_CLOSING = true;
    }
  };
  iteratorWithReturn[ITERATOR$2] = function () {
    return this;
  };
} catch (error) { /* empty */ }

var checkCorrectnessOfIteration = function (exec, SKIP_CLOSING) {
  if (!SKIP_CLOSING && !SAFE_CLOSING) return false;
  var ITERATION_SUPPORT = false;
  try {
    var object = {};
    object[ITERATOR$2] = function () {
      return {
        next: function () {
          return { done: ITERATION_SUPPORT = true };
        }
      };
    };
    exec(object);
  } catch (error) { /* empty */ }
  return ITERATION_SUPPORT;
};

var SPECIES = wellKnownSymbol('species');

// `SpeciesConstructor` abstract operation
// https://tc39.github.io/ecma262/#sec-speciesconstructor
var speciesConstructor = function (O, defaultConstructor) {
  var C = anObject(O).constructor;
  var S;
  return C === undefined || (S = anObject(C)[SPECIES]) == undefined ? defaultConstructor : aFunction(S);
};

var document$2 = global.document;

var html = document$2 && document$2.documentElement;

var set$1 = global.setImmediate;
var clear = global.clearImmediate;
var process = global.process;
var MessageChannel = global.MessageChannel;
var Dispatch = global.Dispatch;
var counter = 0;
var queue = {};
var ONREADYSTATECHANGE = 'onreadystatechange';
var defer, channel, port;

var run = function () {
  var id = +this;
  // eslint-disable-next-line no-prototype-builtins
  if (queue.hasOwnProperty(id)) {
    var fn = queue[id];
    delete queue[id];
    fn();
  }
};

var listener = function (event) {
  run.call(event.data);
};

// Node.js 0.9+ & IE10+ has setImmediate, otherwise:
if (!set$1 || !clear) {
  set$1 = function setImmediate(fn) {
    var args = [];
    var i = 1;
    while (arguments.length > i) args.push(arguments[i++]);
    queue[++counter] = function () {
      // eslint-disable-next-line no-new-func
      (typeof fn == 'function' ? fn : Function(fn)).apply(undefined, args);
    };
    defer(counter);
    return counter;
  };
  clear = function clearImmediate(id) {
    delete queue[id];
  };
  // Node.js 0.8-
  if (classofRaw(process) == 'process') {
    defer = function (id) {
      process.nextTick(bindContext(run, id, 1));
    };
  // Sphere (JS game engine) Dispatch API
  } else if (Dispatch && Dispatch.now) {
    defer = function (id) {
      Dispatch.now(bindContext(run, id, 1));
    };
  // Browsers with MessageChannel, includes WebWorkers
  } else if (MessageChannel) {
    channel = new MessageChannel();
    port = channel.port2;
    channel.port1.onmessage = listener;
    defer = bindContext(port.postMessage, port, 1);
  // Browsers with postMessage, skip WebWorkers
  // IE8 has postMessage, but it's sync & typeof its postMessage is 'object'
  } else if (global.addEventListener && typeof postMessage == 'function' && !global.importScripts) {
    defer = function (id) {
      global.postMessage(id + '', '*');
    };
    global.addEventListener('message', listener, false);
  // IE8-
  } else if (ONREADYSTATECHANGE in documentCreateElement('script')) {
    defer = function (id) {
      html.appendChild(documentCreateElement('script'))[ONREADYSTATECHANGE] = function () {
        html.removeChild(this);
        run.call(id);
      };
    };
  // Rest old browsers
  } else {
    defer = function (id) {
      setTimeout(bindContext(run, id, 1), 0);
    };
  }
}

var task = {
  set: set$1,
  clear: clear
};

var navigator = global.navigator;

var userAgent = navigator && navigator.userAgent || '';

var getOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;

var macrotask = task.set;

var MutationObserver = global.MutationObserver || global.WebKitMutationObserver;
var process$1 = global.process;
var Promise = global.Promise;
var IS_NODE = classofRaw(process$1) == 'process';
// Node.js 11 shows ExperimentalWarning on getting `queueMicrotask`
var queueMicrotaskDescriptor = getOwnPropertyDescriptor$1(global, 'queueMicrotask');
var queueMicrotask = queueMicrotaskDescriptor && queueMicrotaskDescriptor.value;

var flush, head, last, notify, toggle, node, promise;

// modern engines have queueMicrotask method
if (!queueMicrotask) {
  flush = function () {
    var parent, fn;
    if (IS_NODE && (parent = process$1.domain)) parent.exit();
    while (head) {
      fn = head.fn;
      head = head.next;
      try {
        fn();
      } catch (error) {
        if (head) notify();
        else last = undefined;
        throw error;
      }
    } last = undefined;
    if (parent) parent.enter();
  };

  // Node.js
  if (IS_NODE) {
    notify = function () {
      process$1.nextTick(flush);
    };
  // browsers with MutationObserver, except iOS - https://github.com/zloirock/core-js/issues/339
  } else if (MutationObserver && !/(iPhone|iPod|iPad).*AppleWebKit/i.test(userAgent)) {
    toggle = true;
    node = document.createTextNode('');
    new MutationObserver(flush).observe(node, { characterData: true }); // eslint-disable-line no-new
    notify = function () {
      node.data = toggle = !toggle;
    };
  // environments with maybe non-completely correct, but existent Promise
  } else if (Promise && Promise.resolve) {
    // Promise.resolve without an argument throws an error in LG WebOS 2
    promise = Promise.resolve(undefined);
    notify = function () {
      promise.then(flush);
    };
  // for other environments - macrotask based on:
  // - setImmediate
  // - MessageChannel
  // - window.postMessag
  // - onreadystatechange
  // - setTimeout
  } else {
    notify = function () {
      // strange IE + webpack dev server bug - use .call(global)
      macrotask.call(global, flush);
    };
  }
}

var microtask = queueMicrotask || function (fn) {
  var task = { fn: fn, next: undefined };
  if (last) last.next = task;
  if (!head) {
    head = task;
    notify();
  } last = task;
};

// 25.4.1.5 NewPromiseCapability(C)


var PromiseCapability = function (C) {
  var resolve, reject;
  this.promise = new C(function ($$resolve, $$reject) {
    if (resolve !== undefined || reject !== undefined) throw TypeError('Bad Promise constructor');
    resolve = $$resolve;
    reject = $$reject;
  });
  this.resolve = aFunction(resolve);
  this.reject = aFunction(reject);
};

var f$5 = function (C) {
  return new PromiseCapability(C);
};

var newPromiseCapability = {
	f: f$5
};

var promiseResolve = function (C, x) {
  anObject(C);
  if (isObject(x) && x.constructor === C) return x;
  var promiseCapability = newPromiseCapability.f(C);
  var resolve = promiseCapability.resolve;
  resolve(x);
  return promiseCapability.promise;
};

var hostReportErrors = function (a, b) {
  var console = global.console;
  if (console && console.error) {
    arguments.length === 1 ? console.error(a) : console.error(a, b);
  }
};

var perform = function (exec) {
  try {
    return { error: false, value: exec() };
  } catch (error) {
    return { error: true, value: error };
  }
};

var redefineAll = function (target, src, options) {
  for (var key in src) redefine(target, key, src[key], options);
  return target;
};

var defineProperty = objectDefineProperty.f;

var TO_STRING_TAG$1 = wellKnownSymbol('toStringTag');

var setToStringTag = function (it, TAG, STATIC) {
  if (it && !has(it = STATIC ? it : it.prototype, TO_STRING_TAG$1)) {
    defineProperty(it, TO_STRING_TAG$1, { configurable: true, value: TAG });
  }
};

var path = global;

var aFunction$1 = function (variable) {
  return typeof variable == 'function' ? variable : undefined;
};

var getBuiltIn = function (namespace, method) {
  return arguments.length < 2 ? aFunction$1(path[namespace]) || aFunction$1(global[namespace])
    : path[namespace] && path[namespace][method] || global[namespace] && global[namespace][method];
};

var SPECIES$1 = wellKnownSymbol('species');

var setSpecies = function (CONSTRUCTOR_NAME) {
  var C = getBuiltIn(CONSTRUCTOR_NAME);
  var defineProperty = objectDefineProperty.f;
  if (descriptors && C && !C[SPECIES$1]) defineProperty(C, SPECIES$1, {
    configurable: true,
    get: function () { return this; }
  });
};

var PROMISE = 'Promise';










var task$1 = task.set;






var SPECIES$2 = wellKnownSymbol('species');


var getInternalState = internalState.get;
var setInternalState = internalState.set;
var getInternalPromiseState = internalState.getterFor(PROMISE);
var PromiseConstructor = global[PROMISE];
var TypeError$1 = global.TypeError;
var document$3 = global.document;
var process$2 = global.process;
var $fetch = global.fetch;
var versions = process$2 && process$2.versions;
var v8 = versions && versions.v8 || '';
var newPromiseCapability$1 = newPromiseCapability.f;
var newGenericPromiseCapability = newPromiseCapability$1;
var IS_NODE$1 = classofRaw(process$2) == 'process';
var DISPATCH_EVENT = !!(document$3 && document$3.createEvent && global.dispatchEvent);
var UNHANDLED_REJECTION = 'unhandledrejection';
var REJECTION_HANDLED = 'rejectionhandled';
var PENDING = 0;
var FULFILLED = 1;
var REJECTED = 2;
var HANDLED = 1;
var UNHANDLED = 2;
var Internal, OwnPromiseCapability, PromiseWrapper;

var FORCED = isForced_1(PROMISE, function () {
  // correct subclassing with @@species support
  var promise = PromiseConstructor.resolve(1);
  var empty = function () { /* empty */ };
  var FakePromise = (promise.constructor = {})[SPECIES$2] = function (exec) {
    exec(empty, empty);
  };
  // unhandled rejections tracking support, NodeJS Promise without it fails @@species test
  return !((IS_NODE$1 || typeof PromiseRejectionEvent == 'function')
    && (!isPure || promise['finally'])
    && promise.then(empty) instanceof FakePromise
    // v8 6.6 (Node 10 and Chrome 66) have a bug with resolving custom thenables
    // https://bugs.chromium.org/p/chromium/issues/detail?id=830565
    // we can't detect it synchronously, so just check versions
    && v8.indexOf('6.6') !== 0
    && userAgent.indexOf('Chrome/66') === -1);
});

var INCORRECT_ITERATION = FORCED || !checkCorrectnessOfIteration(function (iterable) {
  PromiseConstructor.all(iterable)['catch'](function () { /* empty */ });
});

// helpers
var isThenable = function (it) {
  var then;
  return isObject(it) && typeof (then = it.then) == 'function' ? then : false;
};

var notify$1 = function (promise, state, isReject) {
  if (state.notified) return;
  state.notified = true;
  var chain = state.reactions;
  microtask(function () {
    var value = state.value;
    var ok = state.state == FULFILLED;
    var i = 0;
    var run = function (reaction) {
      var handler = ok ? reaction.ok : reaction.fail;
      var resolve = reaction.resolve;
      var reject = reaction.reject;
      var domain = reaction.domain;
      var result, then, exited;
      try {
        if (handler) {
          if (!ok) {
            if (state.rejection === UNHANDLED) onHandleUnhandled(promise, state);
            state.rejection = HANDLED;
          }
          if (handler === true) result = value;
          else {
            if (domain) domain.enter();
            result = handler(value); // may throw
            if (domain) {
              domain.exit();
              exited = true;
            }
          }
          if (result === reaction.promise) {
            reject(TypeError$1('Promise-chain cycle'));
          } else if (then = isThenable(result)) {
            then.call(result, resolve, reject);
          } else resolve(result);
        } else reject(value);
      } catch (error) {
        if (domain && !exited) domain.exit();
        reject(error);
      }
    };
    while (chain.length > i) run(chain[i++]); // variable length - can't use forEach
    state.reactions = [];
    state.notified = false;
    if (isReject && !state.rejection) onUnhandled(promise, state);
  });
};

var dispatchEvent = function (name, promise, reason) {
  var event, handler;
  if (DISPATCH_EVENT) {
    event = document$3.createEvent('Event');
    event.promise = promise;
    event.reason = reason;
    event.initEvent(name, false, true);
    global.dispatchEvent(event);
  } else event = { promise: promise, reason: reason };
  if (handler = global['on' + name]) handler(event);
  else if (name === UNHANDLED_REJECTION) hostReportErrors('Unhandled promise rejection', reason);
};

var onUnhandled = function (promise, state) {
  task$1.call(global, function () {
    var value = state.value;
    var IS_UNHANDLED = isUnhandled(state);
    var result;
    if (IS_UNHANDLED) {
      result = perform(function () {
        if (IS_NODE$1) {
          process$2.emit('unhandledRejection', value, promise);
        } else dispatchEvent(UNHANDLED_REJECTION, promise, value);
      });
      // Browsers should not trigger `rejectionHandled` event if it was handled here, NodeJS - should
      state.rejection = IS_NODE$1 || isUnhandled(state) ? UNHANDLED : HANDLED;
      if (result.error) throw result.value;
    }
  });
};

var isUnhandled = function (state) {
  return state.rejection !== HANDLED && !state.parent;
};

var onHandleUnhandled = function (promise, state) {
  task$1.call(global, function () {
    if (IS_NODE$1) {
      process$2.emit('rejectionHandled', promise);
    } else dispatchEvent(REJECTION_HANDLED, promise, state.value);
  });
};

var bind = function (fn, promise, state, unwrap) {
  return function (value) {
    fn(promise, state, value, unwrap);
  };
};

var internalReject = function (promise, state, value, unwrap) {
  if (state.done) return;
  state.done = true;
  if (unwrap) state = unwrap;
  state.value = value;
  state.state = REJECTED;
  notify$1(promise, state, true);
};

var internalResolve = function (promise, state, value, unwrap) {
  if (state.done) return;
  state.done = true;
  if (unwrap) state = unwrap;
  try {
    if (promise === value) throw TypeError$1("Promise can't be resolved itself");
    var then = isThenable(value);
    if (then) {
      microtask(function () {
        var wrapper = { done: false };
        try {
          then.call(value,
            bind(internalResolve, promise, wrapper, state),
            bind(internalReject, promise, wrapper, state)
          );
        } catch (error) {
          internalReject(promise, wrapper, error, state);
        }
      });
    } else {
      state.value = value;
      state.state = FULFILLED;
      notify$1(promise, state, false);
    }
  } catch (error) {
    internalReject(promise, { done: false }, error, state);
  }
};

// constructor polyfill
if (FORCED) {
  // 25.4.3.1 Promise(executor)
  PromiseConstructor = function Promise(executor) {
    anInstance(this, PromiseConstructor, PROMISE);
    aFunction(executor);
    Internal.call(this);
    var state = getInternalState(this);
    try {
      executor(bind(internalResolve, this, state), bind(internalReject, this, state));
    } catch (error) {
      internalReject(this, state, error);
    }
  };
  // eslint-disable-next-line no-unused-vars
  Internal = function Promise(executor) {
    setInternalState(this, {
      type: PROMISE,
      done: false,
      notified: false,
      parent: false,
      reactions: [],
      rejection: false,
      state: PENDING,
      value: undefined
    });
  };
  Internal.prototype = redefineAll(PromiseConstructor.prototype, {
    // `Promise.prototype.then` method
    // https://tc39.github.io/ecma262/#sec-promise.prototype.then
    then: function then(onFulfilled, onRejected) {
      var state = getInternalPromiseState(this);
      var reaction = newPromiseCapability$1(speciesConstructor(this, PromiseConstructor));
      reaction.ok = typeof onFulfilled == 'function' ? onFulfilled : true;
      reaction.fail = typeof onRejected == 'function' && onRejected;
      reaction.domain = IS_NODE$1 ? process$2.domain : undefined;
      state.parent = true;
      state.reactions.push(reaction);
      if (state.state != PENDING) notify$1(this, state, false);
      return reaction.promise;
    },
    // `Promise.prototype.catch` method
    // https://tc39.github.io/ecma262/#sec-promise.prototype.catch
    'catch': function (onRejected) {
      return this.then(undefined, onRejected);
    }
  });
  OwnPromiseCapability = function () {
    var promise = new Internal();
    var state = getInternalState(promise);
    this.promise = promise;
    this.resolve = bind(internalResolve, promise, state);
    this.reject = bind(internalReject, promise, state);
  };
  newPromiseCapability.f = newPromiseCapability$1 = function (C) {
    return C === PromiseConstructor || C === PromiseWrapper
      ? new OwnPromiseCapability(C)
      : newGenericPromiseCapability(C);
  };

  // wrap fetch result
  if (typeof $fetch == 'function') _export({ global: true, enumerable: true, forced: true }, {
    // eslint-disable-next-line no-unused-vars
    fetch: function fetch(input) {
      return promiseResolve(PromiseConstructor, $fetch.apply(global, arguments));
    }
  });
}

_export({ global: true, wrap: true, forced: FORCED }, { Promise: PromiseConstructor });

setToStringTag(PromiseConstructor, PROMISE, false, true);
setSpecies(PROMISE);

PromiseWrapper = path[PROMISE];

// statics
_export({ target: PROMISE, stat: true, forced: FORCED }, {
  // `Promise.reject` method
  // https://tc39.github.io/ecma262/#sec-promise.reject
  reject: function reject(r) {
    var capability = newPromiseCapability$1(this);
    capability.reject.call(undefined, r);
    return capability.promise;
  }
});

_export({ target: PROMISE, stat: true, forced: FORCED }, {
  // `Promise.resolve` method
  // https://tc39.github.io/ecma262/#sec-promise.resolve
  resolve: function resolve(x) {
    return promiseResolve(this, x);
  }
});

_export({ target: PROMISE, stat: true, forced: INCORRECT_ITERATION }, {
  // `Promise.all` method
  // https://tc39.github.io/ecma262/#sec-promise.all
  all: function all(iterable) {
    var C = this;
    var capability = newPromiseCapability$1(C);
    var resolve = capability.resolve;
    var reject = capability.reject;
    var result = perform(function () {
      var values = [];
      var counter = 0;
      var remaining = 1;
      iterate(iterable, function (promise) {
        var index = counter++;
        var alreadyCalled = false;
        values.push(undefined);
        remaining++;
        C.resolve(promise).then(function (value) {
          if (alreadyCalled) return;
          alreadyCalled = true;
          values[index] = value;
          --remaining || resolve(values);
        }, reject);
      });
      --remaining || resolve(values);
    });
    if (result.error) reject(result.value);
    return capability.promise;
  },
  // `Promise.race` method
  // https://tc39.github.io/ecma262/#sec-promise.race
  race: function race(iterable) {
    var C = this;
    var capability = newPromiseCapability$1(C);
    var reject = capability.reject;
    var result = perform(function () {
      iterate(iterable, function (promise) {
        C.resolve(promise).then(capability.resolve, reject);
      });
    });
    if (result.error) reject(result.value);
    return capability.promise;
  }
});

async function getFileInfo(path) {
  return prettier.getFileInfo(path);
}
async function format(fileContents, config) {
  return prettier.format(fileContents, config);
}

exports.format = format;
exports.getFileInfo = getFileInfo;