jsondiffpatch/dist/jsondiffpatch.cjs.js

'use strict';

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

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

var dmp = _interopDefault(require('diff-match-patch'));
var chalk = _interopDefault(require('chalk'));

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
  return typeof obj;
} : function (obj) {
  return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
};











var classCallCheck = function (instance, Constructor) {
  if (!(instance instanceof Constructor)) {
    throw new TypeError("Cannot call a class as a function");
  }
};

var createClass = function () {
  function defineProperties(target, props) {
    for (var i = 0; i < props.length; i++) {
      var descriptor = props[i];
      descriptor.enumerable = descriptor.enumerable || false;
      descriptor.configurable = true;
      if ("value" in descriptor) descriptor.writable = true;
      Object.defineProperty(target, descriptor.key, descriptor);
    }
  }

  return function (Constructor, protoProps, staticProps) {
    if (protoProps) defineProperties(Constructor.prototype, protoProps);
    if (staticProps) defineProperties(Constructor, staticProps);
    return Constructor;
  };
}();







var get = function get(object, property, receiver) {
  if (object === null) object = Function.prototype;
  var desc = Object.getOwnPropertyDescriptor(object, property);

  if (desc === undefined) {
    var parent = Object.getPrototypeOf(object);

    if (parent === null) {
      return undefined;
    } else {
      return get(parent, property, receiver);
    }
  } else if ("value" in desc) {
    return desc.value;
  } else {
    var getter = desc.get;

    if (getter === undefined) {
      return undefined;
    }

    return getter.call(receiver);
  }
};

var inherits = function (subClass, superClass) {
  if (typeof superClass !== "function" && superClass !== null) {
    throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
  }

  subClass.prototype = Object.create(superClass && superClass.prototype, {
    constructor: {
      value: subClass,
      enumerable: false,
      writable: true,
      configurable: true
    }
  });
  if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
};











var possibleConstructorReturn = function (self, call) {
  if (!self) {
    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
  }

  return call && (typeof call === "object" || typeof call === "function") ? call : self;
};





var slicedToArray = function () {
  function sliceIterator(arr, i) {
    var _arr = [];
    var _n = true;
    var _d = false;
    var _e = undefined;

    try {
      for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
        _arr.push(_s.value);

        if (i && _arr.length === i) break;
      }
    } catch (err) {
      _d = true;
      _e = err;
    } finally {
      try {
        if (!_n && _i["return"]) _i["return"]();
      } finally {
        if (_d) throw _e;
      }
    }

    return _arr;
  }

  return function (arr, i) {
    if (Array.isArray(arr)) {
      return arr;
    } else if (Symbol.iterator in Object(arr)) {
      return sliceIterator(arr, i);
    } else {
      throw new TypeError("Invalid attempt to destructure non-iterable instance");
    }
  };
}();

var Processor = function () {
  function Processor(options) {
    classCallCheck(this, Processor);

    this.selfOptions = options || {};
    this.pipes = {};
  }

  createClass(Processor, [{
    key: 'options',
    value: function options(_options) {
      if (_options) {
        this.selfOptions = _options;
      }
      return this.selfOptions;
    }
  }, {
    key: 'pipe',
    value: function pipe(name, pipeArg) {
      var pipe = pipeArg;
      if (typeof name === 'string') {
        if (typeof pipe === 'undefined') {
          return this.pipes[name];
        } else {
          this.pipes[name] = pipe;
        }
      }
      if (name && name.name) {
        pipe = name;
        if (pipe.processor === this) {
          return pipe;
        }
        this.pipes[pipe.name] = pipe;
      }
      pipe.processor = this;
      return pipe;
    }
  }, {
    key: 'process',
    value: function process(input, pipe) {
      var context = input;
      context.options = this.options();
      var nextPipe = pipe || input.pipe || 'default';
      var lastPipe = void 0;
      var lastContext = void 0;
      while (nextPipe) {
        if (typeof context.nextAfterChildren !== 'undefined') {
          // children processed and coming back to parent
          context.next = context.nextAfterChildren;
          context.nextAfterChildren = null;
        }

        if (typeof nextPipe === 'string') {
          nextPipe = this.pipe(nextPipe);
        }
        nextPipe.process(context);
        lastContext = context;
        lastPipe = nextPipe;
        nextPipe = null;
        if (context) {
          if (context.next) {
            context = context.next;
            nextPipe = lastContext.nextPipe || context.pipe || lastPipe;
          }
        }
      }
      return context.hasResult ? context.result : undefined;
    }
  }]);
  return Processor;
}();

var Pipe = function () {
  function Pipe(name) {
    classCallCheck(this, Pipe);

    this.name = name;
    this.filters = [];
  }

  createClass(Pipe, [{
    key: 'process',
    value: function process(input) {
      if (!this.processor) {
        throw new Error('add this pipe to a processor before using it');
      }
      var debug = this.debug;
      var length = this.filters.length;
      var context = input;
      for (var index = 0; index < length; index++) {
        var filter = this.filters[index];
        if (debug) {
          this.log('filter: ' + filter.filterName);
        }
        filter(context);
        if ((typeof context === 'undefined' ? 'undefined' : _typeof(context)) === 'object' && context.exiting) {
          context.exiting = false;
          break;
        }
      }
      if (!context.next && this.resultCheck) {
        this.resultCheck(context);
      }
    }
  }, {
    key: 'log',
    value: function log(msg) {
      console.log('[jsondiffpatch] ' + this.name + ' pipe, ' + msg);
    }
  }, {
    key: 'append',
    value: function append() {
      var _filters;

      (_filters = this.filters).push.apply(_filters, arguments);
      return this;
    }
  }, {
    key: 'prepend',
    value: function prepend() {
      var _filters2;

      (_filters2 = this.filters).unshift.apply(_filters2, arguments);
      return this;
    }
  }, {
    key: 'indexOf',
    value: function indexOf(filterName) {
      if (!filterName) {
        throw new Error('a filter name is required');
      }
      for (var index = 0; index < this.filters.length; index++) {
        var filter = this.filters[index];
        if (filter.filterName === filterName) {
          return index;
        }
      }
      throw new Error('filter not found: ' + filterName);
    }
  }, {
    key: 'list',
    value: function list() {
      var names = [];

      var _iteratorNormalCompletion = true;
      var _didIteratorError = false;
      var _iteratorError = undefined;

      try {
        for (var _iterator = this.filters[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
          var filter = _step.value;

          names.push(filter.filterName);
        }
      } catch (err) {
        _didIteratorError = true;
        _iteratorError = err;
      } finally {
        try {
          if (!_iteratorNormalCompletion && _iterator.return) {
            _iterator.return();
          }
        } finally {
          if (_didIteratorError) {
            throw _iteratorError;
          }
        }
      }

      return names;
    }
  }, {
    key: 'after',
    value: function after(filterName) {
      var index = this.indexOf(filterName);
      var params = Array.prototype.slice.call(arguments, 1);
      if (!params.length) {
        throw new Error('a filter is required');
      }
      params.unshift(index + 1, 0);
      Array.prototype.splice.apply(this.filters, params);
      return this;
    }
  }, {
    key: 'before',
    value: function before(filterName) {
      var index = this.indexOf(filterName);
      var params = Array.prototype.slice.call(arguments, 1);
      if (!params.length) {
        throw new Error('a filter is required');
      }
      params.unshift(index, 0);
      Array.prototype.splice.apply(this.filters, params);
      return this;
    }
  }, {
    key: 'replace',
    value: function replace(filterName) {
      var index = this.indexOf(filterName);
      var params = Array.prototype.slice.call(arguments, 1);
      if (!params.length) {
        throw new Error('a filter is required');
      }
      params.unshift(index, 1);
      Array.prototype.splice.apply(this.filters, params);
      return this;
    }
  }, {
    key: 'remove',
    value: function remove(filterName) {
      var index = this.indexOf(filterName);
      this.filters.splice(index, 1);
      return this;
    }
  }, {
    key: 'clear',
    value: function clear() {
      this.filters.length = 0;
      return this;
    }
  }, {
    key: 'shouldHaveResult',
    value: function shouldHaveResult(should) {
      if (should === false) {
        this.resultCheck = null;
        return;
      }
      if (this.resultCheck) {
        return;
      }
      var pipe = this;
      this.resultCheck = function (context) {
        if (!context.hasResult) {
          console.log(context);
          var error = new Error(pipe.name + ' failed');
          error.noResult = true;
          throw error;
        }
      };
      return this;
    }
  }]);
  return Pipe;
}();

var Context = function () {
  function Context() {
    classCallCheck(this, Context);
  }

  createClass(Context, [{
    key: 'setResult',
    value: function setResult(result) {
      this.result = result;
      this.hasResult = true;
      return this;
    }
  }, {
    key: 'exit',
    value: function exit() {
      this.exiting = true;
      return this;
    }
  }, {
    key: 'switchTo',
    value: function switchTo(next, pipe) {
      if (typeof next === 'string' || next instanceof Pipe) {
        this.nextPipe = next;
      } else {
        this.next = next;
        if (pipe) {
          this.nextPipe = pipe;
        }
      }
      return this;
    }
  }, {
    key: 'push',
    value: function push(child, name) {
      child.parent = this;
      if (typeof name !== 'undefined') {
        child.childName = name;
      }
      child.root = this.root || this;
      child.options = child.options || this.options;
      if (!this.children) {
        this.children = [child];
        this.nextAfterChildren = this.next || null;
        this.next = child;
      } else {
        this.children[this.children.length - 1].next = child;
        this.children.push(child);
      }
      child.next = this;
      return this;
    }
  }]);
  return Context;
}();

var isArray = typeof Array.isArray === 'function' ? Array.isArray : function (a) {
  return a instanceof Array;
};

function cloneRegExp(re) {
  var regexMatch = /^\/(.*)\/([gimyu]*)$/.exec(re.toString());
  return new RegExp(regexMatch[1], regexMatch[2]);
}

function clone(arg) {
  if ((typeof arg === 'undefined' ? 'undefined' : _typeof(arg)) !== 'object') {
    return arg;
  }
  if (arg === null) {
    return null;
  }
  if (isArray(arg)) {
    return arg.map(clone);
  }
  if (arg instanceof Date) {
    return new Date(arg.getTime());
  }
  if (arg instanceof RegExp) {
    return cloneRegExp(arg);
  }
  var cloned = {};
  for (var name in arg) {
    if (Object.prototype.hasOwnProperty.call(arg, name)) {
      cloned[name] = clone(arg[name]);
    }
  }
  return cloned;
}

var DiffContext = function (_Context) {
  inherits(DiffContext, _Context);

  function DiffContext(left, right) {
    classCallCheck(this, DiffContext);

    var _this = possibleConstructorReturn(this, (DiffContext.__proto__ || Object.getPrototypeOf(DiffContext)).call(this));

    _this.left = left;
    _this.right = right;
    _this.pipe = 'diff';
    return _this;
  }

  createClass(DiffContext, [{
    key: 'setResult',
    value: function setResult(result) {
      if (this.options.cloneDiffValues && (typeof result === 'undefined' ? 'undefined' : _typeof(result)) === 'object') {
        var clone$$1 = typeof this.options.cloneDiffValues === 'function' ? this.options.cloneDiffValues : clone;
        if (_typeof(result[0]) === 'object') {
          result[0] = clone$$1(result[0]);
        }
        if (_typeof(result[1]) === 'object') {
          result[1] = clone$$1(result[1]);
        }
      }
      return Context.prototype.setResult.apply(this, arguments);
    }
  }]);
  return DiffContext;
}(Context);

var PatchContext = function (_Context) {
  inherits(PatchContext, _Context);

  function PatchContext(left, delta) {
    classCallCheck(this, PatchContext);

    var _this = possibleConstructorReturn(this, (PatchContext.__proto__ || Object.getPrototypeOf(PatchContext)).call(this));

    _this.left = left;
    _this.delta = delta;
    _this.pipe = 'patch';
    return _this;
  }

  return PatchContext;
}(Context);

var ReverseContext = function (_Context) {
  inherits(ReverseContext, _Context);

  function ReverseContext(delta) {
    classCallCheck(this, ReverseContext);

    var _this = possibleConstructorReturn(this, (ReverseContext.__proto__ || Object.getPrototypeOf(ReverseContext)).call(this));

    _this.delta = delta;
    _this.pipe = 'reverse';
    return _this;
  }

  return ReverseContext;
}(Context);

var isArray$1 = typeof Array.isArray === 'function' ? Array.isArray : function (a) {
  return a instanceof Array;
};

var diffFilter = function trivialMatchesDiffFilter(context) {
  if (context.left === context.right) {
    context.setResult(undefined).exit();
    return;
  }
  if (typeof context.left === 'undefined') {
    if (typeof context.right === 'function') {
      throw new Error('functions are not supported');
    }
    context.setResult([context.right]).exit();
    return;
  }
  if (typeof context.right === 'undefined') {
    context.setResult([context.left, 0, 0]).exit();
    return;
  }
  if (typeof context.left === 'function' || typeof context.right === 'function') {
    throw new Error('functions are not supported');
  }
  context.leftType = context.left === null ? 'null' : _typeof(context.left);
  context.rightType = context.right === null ? 'null' : _typeof(context.right);
  if (context.leftType !== context.rightType) {
    context.setResult([context.left, context.right]).exit();
    return;
  }
  if (context.leftType === 'boolean' || context.leftType === 'number') {
    context.setResult([context.left, context.right]).exit();
    return;
  }
  if (context.leftType === 'object') {
    context.leftIsArray = isArray$1(context.left);
  }
  if (context.rightType === 'object') {
    context.rightIsArray = isArray$1(context.right);
  }
  if (context.leftIsArray !== context.rightIsArray) {
    context.setResult([context.left, context.right]).exit();
    return;
  }

  if (context.left instanceof RegExp) {
    if (context.right instanceof RegExp) {
      context.setResult([context.left.toString(), context.right.toString()]).exit();
    } else {
      context.setResult([context.left, context.right]).exit();
    }
  }
};
diffFilter.filterName = 'trivial';

var patchFilter = function trivialMatchesPatchFilter(context) {
  if (typeof context.delta === 'undefined') {
    context.setResult(context.left).exit();
    return;
  }
  context.nested = !isArray$1(context.delta);
  if (context.nested) {
    return;
  }
  if (context.delta.length === 1) {
    context.setResult(context.delta[0]).exit();
    return;
  }
  if (context.delta.length === 2) {
    if (context.left instanceof RegExp) {
      var regexArgs = /^\/(.*)\/([gimyu]+)$/.exec(context.delta[1]);
      if (regexArgs) {
        context.setResult(new RegExp(regexArgs[1], regexArgs[2])).exit();
        return;
      }
    }
    context.setResult(context.delta[1]).exit();
    return;
  }
  if (context.delta.length === 3 && context.delta[2] === 0) {
    context.setResult(undefined).exit();
  }
};
patchFilter.filterName = 'trivial';

var reverseFilter = function trivialReferseFilter(context) {
  if (typeof context.delta === 'undefined') {
    context.setResult(context.delta).exit();
    return;
  }
  context.nested = !isArray$1(context.delta);
  if (context.nested) {
    return;
  }
  if (context.delta.length === 1) {
    context.setResult([context.delta[0], 0, 0]).exit();
    return;
  }
  if (context.delta.length === 2) {
    context.setResult([context.delta[1], context.delta[0]]).exit();
    return;
  }
  if (context.delta.length === 3 && context.delta[2] === 0) {
    context.setResult([context.delta[0]]).exit();
  }
};
reverseFilter.filterName = 'trivial';

function collectChildrenDiffFilter(context) {
  if (!context || !context.children) {
    return;
  }
  var length = context.children.length;
  var child = void 0;
  var result = context.result;
  for (var index = 0; index < length; index++) {
    child = context.children[index];
    if (typeof child.result === 'undefined') {
      continue;
    }
    result = result || {};
    result[child.childName] = child.result;
  }
  if (result && context.leftIsArray) {
    result._t = 'a';
  }
  context.setResult(result).exit();
}
collectChildrenDiffFilter.filterName = 'collectChildren';

function objectsDiffFilter(context) {
  if (context.leftIsArray || context.leftType !== 'object') {
    return;
  }

  var name = void 0;
  var child = void 0;
  var propertyFilter = context.options.propertyFilter;
  for (name in context.left) {
    if (!Object.prototype.hasOwnProperty.call(context.left, name)) {
      continue;
    }
    if (propertyFilter && !propertyFilter(name, context)) {
      continue;
    }
    child = new DiffContext(context.left[name], context.right[name]);
    context.push(child, name);
  }
  for (name in context.right) {
    if (!Object.prototype.hasOwnProperty.call(context.right, name)) {
      continue;
    }
    if (propertyFilter && !propertyFilter(name, context)) {
      continue;
    }
    if (typeof context.left[name] === 'undefined') {
      child = new DiffContext(undefined, context.right[name]);
      context.push(child, name);
    }
  }

  if (!context.children || context.children.length === 0) {
    context.setResult(undefined).exit();
    return;
  }
  context.exit();
}
objectsDiffFilter.filterName = 'objects';

var patchFilter$1 = function nestedPatchFilter(context) {
  if (!context.nested) {
    return;
  }
  if (context.delta._t) {
    return;
  }
  var name = void 0;
  var child = void 0;
  for (name in context.delta) {
    child = new PatchContext(context.left[name], context.delta[name]);
    context.push(child, name);
  }
  context.exit();
};
patchFilter$1.filterName = 'objects';

var collectChildrenPatchFilter = function collectChildrenPatchFilter(context) {
  if (!context || !context.children) {
    return;
  }
  if (context.delta._t) {
    return;
  }
  var length = context.children.length;
  var child = void 0;
  for (var index = 0; index < length; index++) {
    child = context.children[index];
    if (Object.prototype.hasOwnProperty.call(context.left, child.childName) && child.result === undefined) {
      delete context.left[child.childName];
    } else if (context.left[child.childName] !== child.result) {
      context.left[child.childName] = child.result;
    }
  }
  context.setResult(context.left).exit();
};
collectChildrenPatchFilter.filterName = 'collectChildren';

var reverseFilter$1 = function nestedReverseFilter(context) {
  if (!context.nested) {
    return;
  }
  if (context.delta._t) {
    return;
  }
  var name = void 0;
  var child = void 0;
  for (name in context.delta) {
    child = new ReverseContext(context.delta[name]);
    context.push(child, name);
  }
  context.exit();
};
reverseFilter$1.filterName = 'objects';

function collectChildrenReverseFilter(context) {
  if (!context || !context.children) {
    return;
  }
  if (context.delta._t) {
    return;
  }
  var length = context.children.length;
  var child = void 0;
  var delta = {};
  for (var index = 0; index < length; index++) {
    child = context.children[index];
    if (delta[child.childName] !== child.result) {
      delta[child.childName] = child.result;
    }
  }
  context.setResult(delta).exit();
}
collectChildrenReverseFilter.filterName = 'collectChildren';

/*

LCS implementation that supports arrays or strings

reference: http://en.wikipedia.org/wiki/Longest_common_subsequence_problem

*/

var defaultMatch = function defaultMatch(array1, array2, index1, index2) {
  return array1[index1] === array2[index2];
};

var lengthMatrix = function lengthMatrix(array1, array2, match, context) {
  var len1 = array1.length;
  var len2 = array2.length;
  var x = void 0,
      y = void 0;

  // initialize empty matrix of len1+1 x len2+1
  var matrix = [len1 + 1];
  for (x = 0; x < len1 + 1; x++) {
    matrix[x] = [len2 + 1];
    for (y = 0; y < len2 + 1; y++) {
      matrix[x][y] = 0;
    }
  }
  matrix.match = match;
  // save sequence lengths for each coordinate
  for (x = 1; x < len1 + 1; x++) {
    for (y = 1; y < len2 + 1; y++) {
      if (match(array1, array2, x - 1, y - 1, context)) {
        matrix[x][y] = matrix[x - 1][y - 1] + 1;
      } else {
        matrix[x][y] = Math.max(matrix[x - 1][y], matrix[x][y - 1]);
      }
    }
  }
  return matrix;
};

var backtrack = function backtrack(matrix, array1, array2, index1, index2, context) {
  if (index1 === 0 || index2 === 0) {
    return {
      sequence: [],
      indices1: [],
      indices2: []
    };
  }

  if (matrix.match(array1, array2, index1 - 1, index2 - 1, context)) {
    var subsequence = backtrack(matrix, array1, array2, index1 - 1, index2 - 1, context);
    subsequence.sequence.push(array1[index1 - 1]);
    subsequence.indices1.push(index1 - 1);
    subsequence.indices2.push(index2 - 1);
    return subsequence;
  }

  if (matrix[index1][index2 - 1] > matrix[index1 - 1][index2]) {
    return backtrack(matrix, array1, array2, index1, index2 - 1, context);
  } else {
    return backtrack(matrix, array1, array2, index1 - 1, index2, context);
  }
};

var get$1 = function get(array1, array2, match, context) {
  var innerContext = context || {};
  var matrix = lengthMatrix(array1, array2, match || defaultMatch, innerContext);
  var result = backtrack(matrix, array1, array2, array1.length, array2.length, innerContext);
  if (typeof array1 === 'string' && typeof array2 === 'string') {
    result.sequence = result.sequence.join('');
  }
  return result;
};

var lcs = {
  get: get$1
};

var ARRAY_MOVE = 3;

var isArray$2 = typeof Array.isArray === 'function' ? Array.isArray : function (a) {
  return a instanceof Array;
};

var arrayIndexOf = typeof Array.prototype.indexOf === 'function' ? function (array, item) {
  return array.indexOf(item);
} : function (array, item) {
  var length = array.length;
  for (var i = 0; i < length; i++) {
    if (array[i] === item) {
      return i;
    }
  }
  return -1;
};

function arraysHaveMatchByRef(array1, array2, len1, len2) {
  for (var index1 = 0; index1 < len1; index1++) {
    var val1 = array1[index1];
    for (var index2 = 0; index2 < len2; index2++) {
      var val2 = array2[index2];
      if (index1 !== index2 && val1 === val2) {
        return true;
      }
    }
  }
}

function matchItems(array1, array2, index1, index2, context) {
  var value1 = array1[index1];
  var value2 = array2[index2];
  if (value1 === value2) {
    return true;
  }
  if ((typeof value1 === 'undefined' ? 'undefined' : _typeof(value1)) !== 'object' || (typeof value2 === 'undefined' ? 'undefined' : _typeof(value2)) !== 'object') {
    return false;
  }
  var objectHash = context.objectHash;
  if (!objectHash) {
    // no way to match objects was provided, try match by position
    return context.matchByPosition && index1 === index2;
  }
  var hash1 = void 0;
  var hash2 = void 0;
  if (typeof index1 === 'number') {
    context.hashCache1 = context.hashCache1 || [];
    hash1 = context.hashCache1[index1];
    if (typeof hash1 === 'undefined') {
      context.hashCache1[index1] = hash1 = objectHash(value1, index1);
    }
  } else {
    hash1 = objectHash(value1);
  }
  if (typeof hash1 === 'undefined') {
    return false;
  }
  if (typeof index2 === 'number') {
    context.hashCache2 = context.hashCache2 || [];
    hash2 = context.hashCache2[index2];
    if (typeof hash2 === 'undefined') {
      context.hashCache2[index2] = hash2 = objectHash(value2, index2);
    }
  } else {
    hash2 = objectHash(value2);
  }
  if (typeof hash2 === 'undefined') {
    return false;
  }
  return hash1 === hash2;
}

var diffFilter$1 = function arraysDiffFilter(context) {
  if (!context.leftIsArray) {
    return;
  }

  var matchContext = {
    objectHash: context.options && context.options.objectHash,
    matchByPosition: context.options && context.options.matchByPosition
  };
  var commonHead = 0;
  var commonTail = 0;
  var index = void 0;
  var index1 = void 0;
  var index2 = void 0;
  var array1 = context.left;
  var array2 = context.right;
  var len1 = array1.length;
  var len2 = array2.length;

  var child = void 0;

  if (len1 > 0 && len2 > 0 && !matchContext.objectHash && typeof matchContext.matchByPosition !== 'boolean') {
    matchContext.matchByPosition = !arraysHaveMatchByRef(array1, array2, len1, len2);
  }

  // separate common head
  while (commonHead < len1 && commonHead < len2 && matchItems(array1, array2, commonHead, commonHead, matchContext)) {
    index = commonHead;
    child = new DiffContext(context.left[index], context.right[index]);
    context.push(child, index);
    commonHead++;
  }
  // separate common tail
  while (commonTail + commonHead < len1 && commonTail + commonHead < len2 && matchItems(array1, array2, len1 - 1 - commonTail, len2 - 1 - commonTail, matchContext)) {
    index1 = len1 - 1 - commonTail;
    index2 = len2 - 1 - commonTail;
    child = new DiffContext(context.left[index1], context.right[index2]);
    context.push(child, index2);
    commonTail++;
  }
  var result = void 0;
  if (commonHead + commonTail === len1) {
    if (len1 === len2) {
      // arrays are identical
      context.setResult(undefined).exit();
      return;
    }
    // trivial case, a block (1 or more consecutive items) was added
    result = result || {
      _t: 'a'
    };
    for (index = commonHead; index < len2 - commonTail; index++) {
      result[index] = [array2[index]];
    }
    context.setResult(result).exit();
    return;
  }
  if (commonHead + commonTail === len2) {
    // trivial case, a block (1 or more consecutive items) was removed
    result = result || {
      _t: 'a'
    };
    for (index = commonHead; index < len1 - commonTail; index++) {
      result['_' + index] = [array1[index], 0, 0];
    }
    context.setResult(result).exit();
    return;
  }
  // reset hash cache
  delete matchContext.hashCache1;
  delete matchContext.hashCache2;

  // diff is not trivial, find the LCS (Longest Common Subsequence)
  var trimmed1 = array1.slice(commonHead, len1 - commonTail);
  var trimmed2 = array2.slice(commonHead, len2 - commonTail);
  var seq = lcs.get(trimmed1, trimmed2, matchItems, matchContext);
  var removedItems = [];
  result = result || {
    _t: 'a'
  };
  for (index = commonHead; index < len1 - commonTail; index++) {
    if (arrayIndexOf(seq.indices1, index - commonHead) < 0) {
      // removed
      result['_' + index] = [array1[index], 0, 0];
      removedItems.push(index);
    }
  }

  var detectMove = true;
  if (context.options && context.options.arrays && context.options.arrays.detectMove === false) {
    detectMove = false;
  }
  var includeValueOnMove = false;
  if (context.options && context.options.arrays && context.options.arrays.includeValueOnMove) {
    includeValueOnMove = true;
  }

  var removedItemsLength = removedItems.length;
  for (index = commonHead; index < len2 - commonTail; index++) {
    var indexOnArray2 = arrayIndexOf(seq.indices2, index - commonHead);
    if (indexOnArray2 < 0) {
      // added, try to match with a removed item and register as position move
      var isMove = false;
      if (detectMove && removedItemsLength > 0) {
        for (var removeItemIndex1 = 0; removeItemIndex1 < removedItemsLength; removeItemIndex1++) {
          index1 = removedItems[removeItemIndex1];
          if (matchItems(trimmed1, trimmed2, index1 - commonHead, index - commonHead, matchContext)) {
            // store position move as: [originalValue, newPosition, ARRAY_MOVE]
            result['_' + index1].splice(1, 2, index, ARRAY_MOVE);
            if (!includeValueOnMove) {
              // don't include moved value on diff, to save bytes
              result['_' + index1][0] = '';
            }

            index2 = index;
            child = new DiffContext(context.left[index1], context.right[index2]);
            context.push(child, index2);
            removedItems.splice(removeItemIndex1, 1);
            isMove = true;
            break;
          }
        }
      }
      if (!isMove) {
        // added
        result[index] = [array2[index]];
      }
    } else {
      // match, do inner diff
      index1 = seq.indices1[indexOnArray2] + commonHead;
      index2 = seq.indices2[indexOnArray2] + commonHead;
      child = new DiffContext(context.left[index1], context.right[index2]);
      context.push(child, index2);
    }
  }

  context.setResult(result).exit();
};
diffFilter$1.filterName = 'arrays';

var compare = {
  numerically: function numerically(a, b) {
    return a - b;
  },
  numericallyBy: function numericallyBy(name) {
    return function (a, b) {
      return a[name] - b[name];
    };
  }
};

var patchFilter$2 = function nestedPatchFilter(context) {
  if (!context.nested) {
    return;
  }
  if (context.delta._t !== 'a') {
    return;
  }
  var index = void 0;
  var index1 = void 0;

  var delta = context.delta;
  var array = context.left;

  // first, separate removals, insertions and modifications
  var toRemove = [];
  var toInsert = [];
  var toModify = [];
  for (index in delta) {
    if (index !== '_t') {
      if (index[0] === '_') {
        // removed item from original array
        if (delta[index][2] === 0 || delta[index][2] === ARRAY_MOVE) {
          toRemove.push(parseInt(index.slice(1), 10));
        } else {
          throw new Error('only removal or move can be applied at original array indices,' + (' invalid diff type: ' + delta[index][2]));
        }
      } else {
        if (delta[index].length === 1) {
          // added item at new array
          toInsert.push({
            index: parseInt(index, 10),
            value: delta[index][0]
          });
        } else {
          // modified item at new array
          toModify.push({
            index: parseInt(index, 10),
            delta: delta[index]
          });
        }
      }
    }
  }

  // remove items, in reverse order to avoid sawing our own floor
  toRemove = toRemove.sort(compare.numerically);
  for (index = toRemove.length - 1; index >= 0; index--) {
    index1 = toRemove[index];
    var indexDiff = delta['_' + index1];
    var removedValue = array.splice(index1, 1)[0];
    if (indexDiff[2] === ARRAY_MOVE) {
      // reinsert later
      toInsert.push({
        index: indexDiff[1],
        value: removedValue
      });
    }
  }

  // insert items, in reverse order to avoid moving our own floor
  toInsert = toInsert.sort(compare.numericallyBy('index'));
  var toInsertLength = toInsert.length;
  for (index = 0; index < toInsertLength; index++) {
    var insertion = toInsert[index];
    array.splice(insertion.index, 0, insertion.value);
  }

  // apply modifications
  var toModifyLength = toModify.length;
  var child = void 0;
  if (toModifyLength > 0) {
    for (index = 0; index < toModifyLength; index++) {
      var modification = toModify[index];
      child = new PatchContext(context.left[modification.index], modification.delta);
      context.push(child, modification.index);
    }
  }

  if (!context.children) {
    context.setResult(context.left).exit();
    return;
  }
  context.exit();
};
patchFilter$2.filterName = 'arrays';

var collectChildrenPatchFilter$1 = function collectChildrenPatchFilter(context) {
  if (!context || !context.children) {
    return;
  }
  if (context.delta._t !== 'a') {
    return;
  }
  var length = context.children.length;
  var child = void 0;
  for (var index = 0; index < length; index++) {
    child = context.children[index];
    context.left[child.childName] = child.result;
  }
  context.setResult(context.left).exit();
};
collectChildrenPatchFilter$1.filterName = 'arraysCollectChildren';

var reverseFilter$2 = function arraysReverseFilter(context) {
  if (!context.nested) {
    if (context.delta[2] === ARRAY_MOVE) {
      context.newName = '_' + context.delta[1];
      context.setResult([context.delta[0], parseInt(context.childName.substr(1), 10), ARRAY_MOVE]).exit();
    }
    return;
  }
  if (context.delta._t !== 'a') {
    return;
  }
  var name = void 0;
  var child = void 0;
  for (name in context.delta) {
    if (name === '_t') {
      continue;
    }
    child = new ReverseContext(context.delta[name]);
    context.push(child, name);
  }
  context.exit();
};
reverseFilter$2.filterName = 'arrays';

var reverseArrayDeltaIndex = function reverseArrayDeltaIndex(delta, index, itemDelta) {
  if (typeof index === 'string' && index[0] === '_') {
    return parseInt(index.substr(1), 10);
  } else if (isArray$2(itemDelta) && itemDelta[2] === 0) {
    return '_' + index;
  }

  var reverseIndex = +index;
  for (var deltaIndex in delta) {
    var deltaItem = delta[deltaIndex];
    if (isArray$2(deltaItem)) {
      if (deltaItem[2] === ARRAY_MOVE) {
        var moveFromIndex = parseInt(deltaIndex.substr(1), 10);
        var moveToIndex = deltaItem[1];
        if (moveToIndex === +index) {
          return moveFromIndex;
        }
        if (moveFromIndex <= reverseIndex && moveToIndex > reverseIndex) {
          reverseIndex++;
        } else if (moveFromIndex >= reverseIndex && moveToIndex < reverseIndex) {
          reverseIndex--;
        }
      } else if (deltaItem[2] === 0) {
        var deleteIndex = parseInt(deltaIndex.substr(1), 10);
        if (deleteIndex <= reverseIndex) {
          reverseIndex++;
        }
      } else if (deltaItem.length === 1 && deltaIndex <= reverseIndex) {
        reverseIndex--;
      }
    }
  }

  return reverseIndex;
};

function collectChildrenReverseFilter$1(context) {
  if (!context || !context.children) {
    return;
  }
  if (context.delta._t !== 'a') {
    return;
  }
  var length = context.children.length;
  var child = void 0;
  var delta = {
    _t: 'a'
  };

  for (var index = 0; index < length; index++) {
    child = context.children[index];
    var name = child.newName;
    if (typeof name === 'undefined') {
      name = reverseArrayDeltaIndex(context.delta, child.childName, child.result);
    }
    if (delta[name] !== child.result) {
      delta[name] = child.result;
    }
  }
  context.setResult(delta).exit();
}
collectChildrenReverseFilter$1.filterName = 'arraysCollectChildren';

var diffFilter$2 = function datesDiffFilter(context) {
  if (context.left instanceof Date) {
    if (context.right instanceof Date) {
      if (context.left.getTime() !== context.right.getTime()) {
        context.setResult([context.left, context.right]);
      } else {
        context.setResult(undefined);
      }
    } else {
      context.setResult([context.left, context.right]);
    }
    context.exit();
  } else if (context.right instanceof Date) {
    context.setResult([context.left, context.right]).exit();
  }
};
diffFilter$2.filterName = 'dates';

/* global diff_match_patch */
var TEXT_DIFF = 2;
var DEFAULT_MIN_LENGTH = 60;
var cachedDiffPatch = null;

var getDiffMatchPatch = function getDiffMatchPatch(required) {
  /* jshint camelcase: false */

  if (!cachedDiffPatch) {
    var instance = void 0;
    /* eslint-disable camelcase, new-cap */
    if (typeof diff_match_patch !== 'undefined') {
      // already loaded, probably a browser
      instance = typeof diff_match_patch === 'function' ? new diff_match_patch() : new diff_match_patch.diff_match_patch();
    } else if (dmp) {
      try {
        instance = dmp && new dmp();
      } catch (err) {
        instance = null;
      }
    }
    /* eslint-enable camelcase, new-cap */
    if (!instance) {
      if (!required) {
        return null;
      }
      var error = new Error('text diff_match_patch library not found');
      // eslint-disable-next-line camelcase
      error.diff_match_patch_not_found = true;
      throw error;
    }
    cachedDiffPatch = {
      diff: function diff(txt1, txt2) {
        return instance.patch_toText(instance.patch_make(txt1, txt2));
      },
      patch: function patch(txt1, _patch) {
        var results = instance.patch_apply(instance.patch_fromText(_patch), txt1);
        for (var i = 0; i < results[1].length; i++) {
          if (!results[1][i]) {
            var _error = new Error('text patch failed');
            _error.textPatchFailed = true;
          }
        }
        return results[0];
      }
    };
  }
  return cachedDiffPatch;
};

var diffFilter$3 = function textsDiffFilter(context) {
  if (context.leftType !== 'string') {
    return;
  }
  var minLength = context.options && context.options.textDiff && context.options.textDiff.minLength || DEFAULT_MIN_LENGTH;
  if (context.left.length < minLength || context.right.length < minLength) {
    context.setResult([context.left, context.right]).exit();
    return;
  }
  // large text, try to use a text-diff algorithm
  var diffMatchPatch = getDiffMatchPatch();
  if (!diffMatchPatch) {
    // diff-match-patch library not available,
    // fallback to regular string replace
    context.setResult([context.left, context.right]).exit();
    return;
  }
  var diff = diffMatchPatch.diff;
  context.setResult([diff(context.left, context.right), 0, TEXT_DIFF]).exit();
};
diffFilter$3.filterName = 'texts';

var patchFilter$3 = function textsPatchFilter(context) {
  if (context.nested) {
    return;
  }
  if (context.delta[2] !== TEXT_DIFF) {
    return;
  }

  // text-diff, use a text-patch algorithm
  var patch = getDiffMatchPatch(true).patch;
  context.setResult(patch(context.left, context.delta[0])).exit();
};
patchFilter$3.filterName = 'texts';

var textDeltaReverse = function textDeltaReverse(delta) {
  var i = void 0;
  var l = void 0;
  var lines = void 0;
  var line = void 0;
  var lineTmp = void 0;
  var header = null;
  var headerRegex = /^@@ +-(\d+),(\d+) +\+(\d+),(\d+) +@@$/;
  var lineHeader = void 0;
  lines = delta.split('\n');
  for (i = 0, l = lines.length; i < l; i++) {
    line = lines[i];
    var lineStart = line.slice(0, 1);
    if (lineStart === '@') {
      header = headerRegex.exec(line);
      lineHeader = i;

      // fix header
      lines[lineHeader] = '@@ -' + header[3] + ',' + header[4] + ' +' + header[1] + ',' + header[2] + ' @@';
    } else if (lineStart === '+') {
      lines[i] = '-' + lines[i].slice(1);
      if (lines[i - 1].slice(0, 1) === '+') {
        // swap lines to keep default order (-+)
        lineTmp = lines[i];
        lines[i] = lines[i - 1];
        lines[i - 1] = lineTmp;
      }
    } else if (lineStart === '-') {
      lines[i] = '+' + lines[i].slice(1);
    }
  }
  return lines.join('\n');
};

var reverseFilter$3 = function textsReverseFilter(context) {
  if (context.nested) {
    return;
  }
  if (context.delta[2] !== TEXT_DIFF) {
    return;
  }

  // text-diff, use a text-diff algorithm
  context.setResult([textDeltaReverse(context.delta[0]), 0, TEXT_DIFF]).exit();
};
reverseFilter$3.filterName = 'texts';

var DiffPatcher = function () {
  function DiffPatcher(options) {
    classCallCheck(this, DiffPatcher);

    this.processor = new Processor(options);
    this.processor.pipe(new Pipe('diff').append(collectChildrenDiffFilter, diffFilter, diffFilter$2, diffFilter$3, objectsDiffFilter, diffFilter$1).shouldHaveResult());
    this.processor.pipe(new Pipe('patch').append(collectChildrenPatchFilter, collectChildrenPatchFilter$1, patchFilter, patchFilter$3, patchFilter$1, patchFilter$2).shouldHaveResult());
    this.processor.pipe(new Pipe('reverse').append(collectChildrenReverseFilter, collectChildrenReverseFilter$1, reverseFilter, reverseFilter$3, reverseFilter$1, reverseFilter$2).shouldHaveResult());
  }

  createClass(DiffPatcher, [{
    key: 'options',
    value: function options() {
      var _processor;

      return (_processor = this.processor).options.apply(_processor, arguments);
    }
  }, {
    key: 'diff',
    value: function diff(left, right) {
      return this.processor.process(new DiffContext(left, right));
    }
  }, {
    key: 'patch',
    value: function patch(left, delta) {
      return this.processor.process(new PatchContext(left, delta));
    }
  }, {
    key: 'reverse',
    value: function reverse(delta) {
      return this.processor.process(new ReverseContext(delta));
    }
  }, {
    key: 'unpatch',
    value: function unpatch(right, delta) {
      return this.patch(right, this.reverse(delta));
    }
  }, {
    key: 'clone',
    value: function clone$$1(value) {
      return clone(value);
    }
  }]);
  return DiffPatcher;
}();

var isArray$3 = typeof Array.isArray === 'function' ? Array.isArray : function (a) {
  return a instanceof Array;
};

var getObjectKeys = typeof Object.keys === 'function' ? function (obj) {
  return Object.keys(obj);
} : function (obj) {
  var names = [];
  for (var property in obj) {
    if (Object.prototype.hasOwnProperty.call(obj, property)) {
      names.push(property);
    }
  }
  return names;
};

var trimUnderscore = function trimUnderscore(str) {
  if (str.substr(0, 1) === '_') {
    return str.slice(1);
  }
  return str;
};

var arrayKeyToSortNumber = function arrayKeyToSortNumber(key) {
  if (key === '_t') {
    return -1;
  } else {
    if (key.substr(0, 1) === '_') {
      return parseInt(key.slice(1), 10);
    } else {
      return parseInt(key, 10) + 0.1;
    }
  }
};

var arrayKeyComparer = function arrayKeyComparer(key1, key2) {
  return arrayKeyToSortNumber(key1) - arrayKeyToSortNumber(key2);
};

var BaseFormatter = function () {
  function BaseFormatter() {
    classCallCheck(this, BaseFormatter);
  }

  createClass(BaseFormatter, [{
    key: 'format',
    value: function format(delta, left) {
      var context = {};
      this.prepareContext(context);
      this.recurse(context, delta, left);
      return this.finalize(context);
    }
  }, {
    key: 'prepareContext',
    value: function prepareContext(context) {
      context.buffer = [];
      context.out = function () {
        var _buffer;

        (_buffer = this.buffer).push.apply(_buffer, arguments);
      };
    }
  }, {
    key: 'typeFormattterNotFound',
    value: function typeFormattterNotFound(context, deltaType) {
      throw new Error('cannot format delta type: ' + deltaType);
    }
  }, {
    key: 'typeFormattterErrorFormatter',
    value: function typeFormattterErrorFormatter(context, err) {
      return err.toString();
    }
  }, {
    key: 'finalize',
    value: function finalize(_ref) {
      var buffer = _ref.buffer;

      if (isArray$3(buffer)) {
        return buffer.join('');
      }
    }
  }, {
    key: 'recurse',
    value: function recurse(context, delta, left, key, leftKey, movedFrom, isLast) {
      var useMoveOriginHere = delta && movedFrom;
      var leftValue = useMoveOriginHere ? movedFrom.value : left;

      if (typeof delta === 'undefined' && typeof key === 'undefined') {
        return undefined;
      }

      var type = this.getDeltaType(delta, movedFrom);
      var nodeType = type === 'node' ? delta._t === 'a' ? 'array' : 'object' : '';

      if (typeof key !== 'undefined') {
        this.nodeBegin(context, key, leftKey, type, nodeType, isLast);
      } else {
        this.rootBegin(context, type, nodeType);
      }

      var typeFormattter = void 0;
      try {
        typeFormattter = this['format_' + type] || this.typeFormattterNotFound(context, type);
        typeFormattter.call(this, context, delta, leftValue, key, leftKey, movedFrom);
      } catch (err) {
        this.typeFormattterErrorFormatter(context, err, delta, leftValue, key, leftKey, movedFrom);
        if (typeof console !== 'undefined' && console.error) {
          console.error(err.stack);
        }
      }

      if (typeof key !== 'undefined') {
        this.nodeEnd(context, key, leftKey, type, nodeType, isLast);
      } else {
        this.rootEnd(context, type, nodeType);
      }
    }
  }, {
    key: 'formatDeltaChildren',
    value: function formatDeltaChildren(context, delta, left) {
      var self = this;
      this.forEachDeltaKey(delta, left, function (key, leftKey, movedFrom, isLast) {
        self.recurse(context, delta[key], left ? left[leftKey] : undefined, key, leftKey, movedFrom, isLast);
      });
    }
  }, {
    key: 'forEachDeltaKey',
    value: function forEachDeltaKey(delta, left, fn) {
      var keys = getObjectKeys(delta);
      var arrayKeys = delta._t === 'a';
      var moveDestinations = {};
      var name = void 0;
      if (typeof left !== 'undefined') {
        for (name in left) {
          if (Object.prototype.hasOwnProperty.call(left, name)) {
            if (typeof delta[name] === 'undefined' && (!arrayKeys || typeof delta['_' + name] === 'undefined')) {
              keys.push(name);
            }
          }
        }
      }
      // look for move destinations
      for (name in delta) {
        if (Object.prototype.hasOwnProperty.call(delta, name)) {
          var value = delta[name];
          if (isArray$3(value) && value[2] === 3) {
            moveDestinations[value[1].toString()] = {
              key: name,
              value: left && left[parseInt(name.substr(1))]
            };
            if (this.includeMoveDestinations !== false) {
              if (typeof left === 'undefined' && typeof delta[value[1]] === 'undefined') {
                keys.push(value[1].toString());
              }
            }
          }
        }
      }
      if (arrayKeys) {
        keys.sort(arrayKeyComparer);
      } else {
        keys.sort();
      }
      for (var index = 0, length = keys.length; index < length; index++) {
        var key = keys[index];
        if (arrayKeys && key === '_t') {
          continue;
        }
        var leftKey = arrayKeys ? typeof key === 'number' ? key : parseInt(trimUnderscore(key), 10) : key;
        var isLast = index === length - 1;
        fn(key, leftKey, moveDestinations[leftKey], isLast);
      }
    }
  }, {
    key: 'getDeltaType',
    value: function getDeltaType(delta, movedFrom) {
      if (typeof delta === 'undefined') {
        if (typeof movedFrom !== 'undefined') {
          return 'movedestination';
        }
        return 'unchanged';
      }
      if (isArray$3(delta)) {
        if (delta.length === 1) {
          return 'added';
        }
        if (delta.length === 2) {
          return 'modified';
        }
        if (delta.length === 3 && delta[2] === 0) {
          return 'deleted';
        }
        if (delta.length === 3 && delta[2] === 2) {
          return 'textdiff';
        }
        if (delta.length === 3 && delta[2] === 3) {
          return 'moved';
        }
      } else if ((typeof delta === 'undefined' ? 'undefined' : _typeof(delta)) === 'object') {
        return 'node';
      }
      return 'unknown';
    }
  }, {
    key: 'parseTextDiff',
    value: function parseTextDiff(value) {
      var output = [];
      var lines = value.split('\n@@ ');
      for (var i = 0, l = lines.length; i < l; i++) {
        var line = lines[i];
        var lineOutput = {
          pieces: []
        };
        var location = /^(?:@@ )?[-+]?(\d+),(\d+)/.exec(line).slice(1);
        lineOutput.location = {
          line: location[0],
          chr: location[1]
        };
        var pieces = line.split('\n').slice(1);
        for (var pieceIndex = 0, piecesLength = pieces.length; pieceIndex < piecesLength; pieceIndex++) {
          var piece = pieces[pieceIndex];
          if (!piece.length) {
            continue;
          }
          var pieceOutput = {
            type: 'context'
          };
          if (piece.substr(0, 1) === '+') {
            pieceOutput.type = 'added';
          } else if (piece.substr(0, 1) === '-') {
            pieceOutput.type = 'deleted';
          }
          pieceOutput.text = piece.slice(1);
          lineOutput.pieces.push(pieceOutput);
        }
        output.push(lineOutput);
      }
      return output;
    }
  }]);
  return BaseFormatter;
}();



var base = Object.freeze({
	default: BaseFormatter
});

var HtmlFormatter = function (_BaseFormatter) {
  inherits(HtmlFormatter, _BaseFormatter);

  function HtmlFormatter() {
    classCallCheck(this, HtmlFormatter);
    return possibleConstructorReturn(this, (HtmlFormatter.__proto__ || Object.getPrototypeOf(HtmlFormatter)).apply(this, arguments));
  }

  createClass(HtmlFormatter, [{
    key: 'typeFormattterErrorFormatter',
    value: function typeFormattterErrorFormatter(context, err) {
      context.out('<pre class="jsondiffpatch-error">' + err + '</pre>');
    }
  }, {
    key: 'formatValue',
    value: function formatValue(context, value) {
      context.out('<pre>' + htmlEscape(JSON.stringify(value, null, 2)) + '</pre>');
    }
  }, {
    key: 'formatTextDiffString',
    value: function formatTextDiffString(context, value) {
      var lines = this.parseTextDiff(value);
      context.out('<ul class="jsondiffpatch-textdiff">');
      for (var i = 0, l = lines.length; i < l; i++) {
        var line = lines[i];
        context.out('<li><div class="jsondiffpatch-textdiff-location">' + ('<span class="jsondiffpatch-textdiff-line-number">' + line.location.line + '</span><span class="jsondiffpatch-textdiff-char">' + line.location.chr + '</span></div><div class="jsondiffpatch-textdiff-line">'));
        var pieces = line.pieces;
        for (var pieceIndex = 0, piecesLength = pieces.length; pieceIndex < piecesLength; pieceIndex++) {
          /* global unescape */
          var piece = pieces[pieceIndex];
          context.out('<span class="jsondiffpatch-textdiff-' + piece.type + '">' + htmlEscape(unescape(piece.text)) + '</span>');
        }
        context.out('</div></li>');
      }
      context.out('</ul>');
    }
  }, {
    key: 'rootBegin',
    value: function rootBegin(context, type, nodeType) {
      var nodeClass = 'jsondiffpatch-' + type + (nodeType ? ' jsondiffpatch-child-node-type-' + nodeType : '');
      context.out('<div class="jsondiffpatch-delta ' + nodeClass + '">');
    }
  }, {
    key: 'rootEnd',
    value: function rootEnd(context) {
      context.out('</div>' + (context.hasArrows ? '<script type="text/javascript">setTimeout(' + (adjustArrows.toString() + ',10);</script>') : ''));
    }
  }, {
    key: 'nodeBegin',
    value: function nodeBegin(context, key, leftKey, type, nodeType) {
      var nodeClass = 'jsondiffpatch-' + type + (nodeType ? ' jsondiffpatch-child-node-type-' + nodeType : '');
      context.out('<li class="' + nodeClass + '" data-key="' + leftKey + '">' + ('<div class="jsondiffpatch-property-name">' + leftKey + '</div>'));
    }
  }, {
    key: 'nodeEnd',
    value: function nodeEnd(context) {
      context.out('</li>');
    }

    /* jshint camelcase: false */
    /* eslint-disable camelcase */

  }, {
    key: 'format_unchanged',
    value: function format_unchanged(context, delta, left) {
      if (typeof left === 'undefined') {
        return;
      }
      context.out('<div class="jsondiffpatch-value">');
      this.formatValue(context, left);
      context.out('</div>');
    }
  }, {
    key: 'format_movedestination',
    value: function format_movedestination(context, delta, left) {
      if (typeof left === 'undefined') {
        return;
      }
      context.out('<div class="jsondiffpatch-value">');
      this.formatValue(context, left);
      context.out('</div>');
    }
  }, {
    key: 'format_node',
    value: function format_node(context, delta, left) {
      // recurse
      var nodeType = delta._t === 'a' ? 'array' : 'object';
      context.out('<ul class="jsondiffpatch-node jsondiffpatch-node-type-' + nodeType + '">');
      this.formatDeltaChildren(context, delta, left);
      context.out('</ul>');
    }
  }, {
    key: 'format_added',
    value: function format_added(context, delta) {
      context.out('<div class="jsondiffpatch-value">');
      this.formatValue(context, delta[0]);
      context.out('</div>');
    }
  }, {
    key: 'format_modified',
    value: function format_modified(context, delta) {
      context.out('<div class="jsondiffpatch-value jsondiffpatch-left-value">');
      this.formatValue(context, delta[0]);
      context.out('</div>' + '<div class="jsondiffpatch-value jsondiffpatch-right-value">');
      this.formatValue(context, delta[1]);
      context.out('</div>');
    }
  }, {
    key: 'format_deleted',
    value: function format_deleted(context, delta) {
      context.out('<div class="jsondiffpatch-value">');
      this.formatValue(context, delta[0]);
      context.out('</div>');
    }
  }, {
    key: 'format_moved',
    value: function format_moved(context, delta) {
      context.out('<div class="jsondiffpatch-value">');
      this.formatValue(context, delta[0]);
      context.out('</div><div class="jsondiffpatch-moved-destination">' + delta[1] + '</div>');

      // draw an SVG arrow from here to move destination
      context.out(
      /* jshint multistr: true */
      '<div class="jsondiffpatch-arrow" ' + 'style="position: relative; left: -34px;">\n          <svg width="30" height="60" ' + 'style="position: absolute; display: none;">\n          <defs>\n              <marker id="markerArrow" markerWidth="8" markerHeight="8"\n                 refx="2" refy="4"\n                     orient="auto" markerUnits="userSpaceOnUse">\n                  <path d="M1,1 L1,7 L7,4 L1,1" style="fill: #339;" />\n              </marker>\n          </defs>\n          <path d="M30,0 Q-10,25 26,50"\n            style="stroke: #88f; stroke-width: 2px; fill: none; ' + 'stroke-opacity: 0.5; marker-end: url(#markerArrow);"\n          ></path>\n          </svg>\n      </div>');
      context.hasArrows = true;
    }
  }, {
    key: 'format_textdiff',
    value: function format_textdiff(context, delta) {
      context.out('<div class="jsondiffpatch-value">');
      this.formatTextDiffString(context, delta[0]);
      context.out('</div>');
    }
  }]);
  return HtmlFormatter;
}(BaseFormatter);

function htmlEscape(text) {
  var html = text;
  var replacements = [[/&/g, '&amp;'], [/</g, '&lt;'], [/>/g, '&gt;'], [/'/g, '&apos;'], [/"/g, '&quot;']];
  for (var i = 0; i < replacements.length; i++) {
    html = html.replace(replacements[i][0], replacements[i][1]);
  }
  return html;
}

var adjustArrows = function jsondiffpatchHtmlFormatterAdjustArrows(nodeArg) {
  var node = nodeArg || document;
  var getElementText = function getElementText(_ref) {
    var textContent = _ref.textContent,
        innerText = _ref.innerText;
    return textContent || innerText;
  };
  var eachByQuery = function eachByQuery(el, query, fn) {
    var elems = el.querySelectorAll(query);
    for (var i = 0, l = elems.length; i < l; i++) {
      fn(elems[i]);
    }
  };
  var eachChildren = function eachChildren(_ref2, fn) {
    var children = _ref2.children;

    for (var i = 0, l = children.length; i < l; i++) {
      fn(children[i], i);
    }
  };
  eachByQuery(node, '.jsondiffpatch-arrow', function (_ref3) {
    var parentNode = _ref3.parentNode,
        children = _ref3.children,
        style = _ref3.style;

    var arrowParent = parentNode;
    var svg = children[0];
    var path = svg.children[1];
    svg.style.display = 'none';
    var destination = getElementText(arrowParent.querySelector('.jsondiffpatch-moved-destination'));
    var container = arrowParent.parentNode;
    var destinationElem = void 0;
    eachChildren(container, function (child) {
      if (child.getAttribute('data-key') === destination) {
        destinationElem = child;
      }
    });
    if (!destinationElem) {
      return;
    }
    try {
      var distance = destinationElem.offsetTop - arrowParent.offsetTop;
      svg.setAttribute('height', Math.abs(distance) + 6);
      style.top = -8 + (distance > 0 ? 0 : distance) + 'px';
      var curve = distance > 0 ? 'M30,0 Q-10,' + Math.round(distance / 2) + ' 26,' + (distance - 4) : 'M30,' + -distance + ' Q-10,' + Math.round(-distance / 2) + ' 26,4';
      path.setAttribute('d', curve);
      svg.style.display = '';
    } catch (err) {}
  });
};

/* jshint camelcase: true */
/* eslint-enable camelcase */

var showUnchanged = function showUnchanged(show, node, delay) {
  var el = node || document.body;
  var prefix = 'jsondiffpatch-unchanged-';
  var classes = {
    showing: prefix + 'showing',
    hiding: prefix + 'hiding',
    visible: prefix + 'visible',
    hidden: prefix + 'hidden'
  };
  var list = el.classList;
  if (!list) {
    return;
  }
  if (!delay) {
    list.remove(classes.showing);
    list.remove(classes.hiding);
    list.remove(classes.visible);
    list.remove(classes.hidden);
    if (show === false) {
      list.add(classes.hidden);
    }
    return;
  }
  if (show === false) {
    list.remove(classes.showing);
    list.add(classes.visible);
    setTimeout(function () {
      list.add(classes.hiding);
    }, 10);
  } else {
    list.remove(classes.hiding);
    list.add(classes.showing);
    list.remove(classes.hidden);
  }
  var intervalId = setInterval(function () {
    adjustArrows(el);
  }, 100);
  setTimeout(function () {
    list.remove(classes.showing);
    list.remove(classes.hiding);
    if (show === false) {
      list.add(classes.hidden);
      list.remove(classes.visible);
    } else {
      list.add(classes.visible);
      list.remove(classes.hidden);
    }
    setTimeout(function () {
      list.remove(classes.visible);
      clearInterval(intervalId);
    }, delay + 400);
  }, delay);
};

var hideUnchanged = function hideUnchanged(node, delay) {
  return showUnchanged(false, node, delay);
};

var defaultInstance = void 0;

function format(delta, left) {
  if (!defaultInstance) {
    defaultInstance = new HtmlFormatter();
  }
  return defaultInstance.format(delta, left);
}



var html = Object.freeze({
	showUnchanged: showUnchanged,
	hideUnchanged: hideUnchanged,
	default: HtmlFormatter,
	format: format
});

var AnnotatedFormatter = function (_BaseFormatter) {
  inherits(AnnotatedFormatter, _BaseFormatter);

  function AnnotatedFormatter() {
    classCallCheck(this, AnnotatedFormatter);

    var _this = possibleConstructorReturn(this, (AnnotatedFormatter.__proto__ || Object.getPrototypeOf(AnnotatedFormatter)).call(this));

    _this.includeMoveDestinations = false;
    return _this;
  }

  createClass(AnnotatedFormatter, [{
    key: 'prepareContext',
    value: function prepareContext(context) {
      get(AnnotatedFormatter.prototype.__proto__ || Object.getPrototypeOf(AnnotatedFormatter.prototype), 'prepareContext', this).call(this, context);
      context.indent = function (levels) {
        this.indentLevel = (this.indentLevel || 0) + (typeof levels === 'undefined' ? 1 : levels);
        this.indentPad = new Array(this.indentLevel + 1).join('&nbsp;&nbsp;');
      };
      context.row = function (json, htmlNote) {
        context.out('<tr><td style="white-space: nowrap;">' + '<pre class="jsondiffpatch-annotated-indent"' + ' style="display: inline-block">');
        context.out(context.indentPad);
        context.out('</pre><pre style="display: inline-block">');
        context.out(json);
        context.out('</pre></td><td class="jsondiffpatch-delta-note"><div>');
        context.out(htmlNote);
        context.out('</div></td></tr>');
      };
    }
  }, {
    key: 'typeFormattterErrorFormatter',
    value: function typeFormattterErrorFormatter(context, err) {
      context.row('', '<pre class="jsondiffpatch-error">' + err + '</pre>');
    }
  }, {
    key: 'formatTextDiffString',
    value: function formatTextDiffString(context, value) {
      var lines = this.parseTextDiff(value);
      context.out('<ul class="jsondiffpatch-textdiff">');
      for (var i = 0, l = lines.length; i < l; i++) {
        var line = lines[i];
        context.out('<li><div class="jsondiffpatch-textdiff-location">' + ('<span class="jsondiffpatch-textdiff-line-number">' + line.location.line + '</span><span class="jsondiffpatch-textdiff-char">' + line.location.chr + '</span></div><div class="jsondiffpatch-textdiff-line">'));
        var pieces = line.pieces;
        for (var pieceIndex = 0, piecesLength = pieces.length; pieceIndex < piecesLength; pieceIndex++) {
          var piece = pieces[pieceIndex];
          context.out('<span class="jsondiffpatch-textdiff-' + piece.type + '">' + piece.text + '</span>');
        }
        context.out('</div></li>');
      }
      context.out('</ul>');
    }
  }, {
    key: 'rootBegin',
    value: function rootBegin(context, type, nodeType) {
      context.out('<table class="jsondiffpatch-annotated-delta">');
      if (type === 'node') {
        context.row('{');
        context.indent();
      }
      if (nodeType === 'array') {
        context.row('"_t": "a",', 'Array delta (member names indicate array indices)');
      }
    }
  }, {
    key: 'rootEnd',
    value: function rootEnd(context, type) {
      if (type === 'node') {
        context.indent(-1);
        context.row('}');
      }
      context.out('</table>');
    }
  }, {
    key: 'nodeBegin',
    value: function nodeBegin(context, key, leftKey, type, nodeType) {
      context.row('&quot;' + key + '&quot;: {');
      if (type === 'node') {
        context.indent();
      }
      if (nodeType === 'array') {
        context.row('"_t": "a",', 'Array delta (member names indicate array indices)');
      }
    }
  }, {
    key: 'nodeEnd',
    value: function nodeEnd(context, key, leftKey, type, nodeType, isLast) {
      if (type === 'node') {
        context.indent(-1);
      }
      context.row('}' + (isLast ? '' : ','));
    }

    /* jshint camelcase: false */

    /* eslint-disable camelcase */

  }, {
    key: 'format_unchanged',
    value: function format_unchanged() {}
  }, {
    key: 'format_movedestination',
    value: function format_movedestination() {}
  }, {
    key: 'format_node',
    value: function format_node(context, delta, left) {
      // recurse
      this.formatDeltaChildren(context, delta, left);
    }
  }]);
  return AnnotatedFormatter;
}(BaseFormatter);

/* eslint-enable camelcase */

var wrapPropertyName = function wrapPropertyName(name) {
  return '<pre style="display:inline-block">&quot;' + name + '&quot;</pre>';
};

var deltaAnnotations = {
  added: function added(delta, left, key, leftKey) {
    var formatLegend = ' <pre>([newValue])</pre>';
    if (typeof leftKey === 'undefined') {
      return 'new value' + formatLegend;
    }
    if (typeof leftKey === 'number') {
      return 'insert at index ' + leftKey + formatLegend;
    }
    return 'add property ' + wrapPropertyName(leftKey) + formatLegend;
  },
  modified: function modified(delta, left, key, leftKey) {
    var formatLegend = ' <pre>([previousValue, newValue])</pre>';
    if (typeof leftKey === 'undefined') {
      return 'modify value' + formatLegend;
    }
    if (typeof leftKey === 'number') {
      return 'modify at index ' + leftKey + formatLegend;
    }
    return 'modify property ' + wrapPropertyName(leftKey) + formatLegend;
  },
  deleted: function deleted(delta, left, key, leftKey) {
    var formatLegend = ' <pre>([previousValue, 0, 0])</pre>';
    if (typeof leftKey === 'undefined') {
      return 'delete value' + formatLegend;
    }
    if (typeof leftKey === 'number') {
      return 'remove index ' + leftKey + formatLegend;
    }
    return 'delete property ' + wrapPropertyName(leftKey) + formatLegend;
  },
  moved: function moved(delta, left, key, leftKey) {
    return 'move from <span title="(position to remove at original state)">' + ('index ' + leftKey + '</span> to <span title="(position to insert at final') + (' state)">index ' + delta[1] + '</span>');
  },
  textdiff: function textdiff(delta, left, key, leftKey) {
    var location = typeof leftKey === 'undefined' ? '' : typeof leftKey === 'number' ? ' at index ' + leftKey : ' at property ' + wrapPropertyName(leftKey);
    return 'text diff' + location + ', format is <a href="https://code.google.com/' + 'p/google-diff-match-patch/wiki/Unidiff">a variation of Unidiff</a>';
  }
};

var formatAnyChange = function formatAnyChange(context, delta) {
  var deltaType = this.getDeltaType(delta);
  var annotator = deltaAnnotations[deltaType];
  var htmlNote = annotator && annotator.apply(annotator, Array.prototype.slice.call(arguments, 1));
  var json = JSON.stringify(delta, null, 2);
  if (deltaType === 'textdiff') {
    // split text diffs lines
    json = json.split('\\n').join('\\n"+\n   "');
  }
  context.indent();
  context.row(json, htmlNote);
  context.indent(-1);
};

/* eslint-disable camelcase */
AnnotatedFormatter.prototype.format_added = formatAnyChange;
AnnotatedFormatter.prototype.format_modified = formatAnyChange;
AnnotatedFormatter.prototype.format_deleted = formatAnyChange;
AnnotatedFormatter.prototype.format_moved = formatAnyChange;
AnnotatedFormatter.prototype.format_textdiff = formatAnyChange;
var defaultInstance$1 = void 0;

function format$1(delta, left) {
  if (!defaultInstance$1) {
    defaultInstance$1 = new AnnotatedFormatter();
  }
  return defaultInstance$1.format(delta, left);
}



var annotated = Object.freeze({
	default: AnnotatedFormatter,
	format: format$1
});

var OPERATIONS = {
  add: 'add',
  remove: 'remove',
  replace: 'replace',
  move: 'move'
};

var JSONFormatter = function (_BaseFormatter) {
  inherits(JSONFormatter, _BaseFormatter);

  function JSONFormatter() {
    classCallCheck(this, JSONFormatter);

    var _this = possibleConstructorReturn(this, (JSONFormatter.__proto__ || Object.getPrototypeOf(JSONFormatter)).call(this));

    _this.includeMoveDestinations = true;
    return _this;
  }

  createClass(JSONFormatter, [{
    key: 'prepareContext',
    value: function prepareContext(context) {
      get(JSONFormatter.prototype.__proto__ || Object.getPrototypeOf(JSONFormatter.prototype), 'prepareContext', this).call(this, context);
      context.result = [];
      context.path = [];
      context.pushCurrentOp = function (obj) {
        var op = obj.op,
            value = obj.value;

        var val = {
          op: op,
          path: this.currentPath()
        };
        if (typeof value !== 'undefined') {
          val.value = value;
        }
        this.result.push(val);
      };

      context.pushMoveOp = function (to) {
        var finalTo = '/' + to;
        var from = this.currentPath();
        this.result.push({ op: OPERATIONS.move, from: from, path: finalTo });
      };

      context.currentPath = function () {
        return '/' + this.path.join('/');
      };
    }
  }, {
    key: 'typeFormattterErrorFormatter',
    value: function typeFormattterErrorFormatter(context, err) {
      context.out('[ERROR] ' + err);
    }
  }, {
    key: 'rootBegin',
    value: function rootBegin() {}
  }, {
    key: 'rootEnd',
    value: function rootEnd() {}
  }, {
    key: 'nodeBegin',
    value: function nodeBegin(_ref, key, leftKey) {
      var path = _ref.path;

      path.push(leftKey);
    }
  }, {
    key: 'nodeEnd',
    value: function nodeEnd(_ref2) {
      var path = _ref2.path;

      path.pop();
    }

    /* jshint camelcase: false */
    /* eslint-disable camelcase */

  }, {
    key: 'format_unchanged',
    value: function format_unchanged() {}
  }, {
    key: 'format_movedestination',
    value: function format_movedestination() {}
  }, {
    key: 'format_node',
    value: function format_node(context, delta, left) {
      this.formatDeltaChildren(context, delta, left);
    }
  }, {
    key: 'format_added',
    value: function format_added(context, delta) {
      context.pushCurrentOp({ op: OPERATIONS.add, value: delta[0] });
    }
  }, {
    key: 'format_modified',
    value: function format_modified(context, delta) {
      context.pushCurrentOp({ op: OPERATIONS.replace, value: delta[1] });
    }
  }, {
    key: 'format_deleted',
    value: function format_deleted(context) {
      context.pushCurrentOp({ op: OPERATIONS.remove });
    }
  }, {
    key: 'format_moved',
    value: function format_moved(context, delta) {
      var to = delta[1];
      context.pushMoveOp(to);
    }
  }, {
    key: 'format_textdiff',
    value: function format_textdiff() {
      throw new Error('Not implemented');
    }
  }, {
    key: 'format',
    value: function format(delta, left) {
      var context = {};
      this.prepareContext(context);
      this.recurse(context, delta, left);
      return context.result;
    }
  }]);
  return JSONFormatter;
}(BaseFormatter);

var last = function last(arr) {
  return arr[arr.length - 1];
};

var sortBy = function sortBy(arr, pred) {
  arr.sort(pred);
  return arr;
};

var compareByIndexDesc = function compareByIndexDesc(indexA, indexB) {
  var lastA = parseInt(indexA, 10);
  var lastB = parseInt(indexB, 10);
  if (!(isNaN(lastA) || isNaN(lastB))) {
    return lastB - lastA;
  } else {
    return 0;
  }
};

var opsByDescendingOrder = function opsByDescendingOrder(removeOps) {
  return sortBy(removeOps, function (a, b) {
    var splitA = a.path.split('/');
    var splitB = b.path.split('/');
    if (splitA.length !== splitB.length) {
      return splitA.length - splitB.length;
    } else {
      return compareByIndexDesc(last(splitA), last(splitB));
    }
  });
};

var partition = function partition(arr, pred) {
  var left = [];
  var right = [];

  arr.forEach(function (el) {
    var coll = pred(el) ? left : right;
    coll.push(el);
  });
  return [left, right];
};

var partitionRemovedOps = function partitionRemovedOps(jsonFormattedDiff) {
  var isRemoveOp = function isRemoveOp(_ref3) {
    var op = _ref3.op;
    return op === 'remove';
  };
  var removeOpsOtherOps = partition(jsonFormattedDiff, isRemoveOp);
  return removeOpsOtherOps;
};

var reorderOps = function reorderOps(jsonFormattedDiff) {
  var _partitionRemovedOps = partitionRemovedOps(jsonFormattedDiff),
      _partitionRemovedOps2 = slicedToArray(_partitionRemovedOps, 2),
      removeOps = _partitionRemovedOps2[0],
      otherOps = _partitionRemovedOps2[1];

  var removeOpsReverse = opsByDescendingOrder(removeOps);
  return removeOpsReverse.concat(otherOps);
};

var defaultInstance$2 = void 0;

var format$2 = function format(delta, left) {
  if (!defaultInstance$2) {
    defaultInstance$2 = new JSONFormatter();
  }
  return reorderOps(defaultInstance$2.format(delta, left));
};

var log = function log(delta, left) {
  console.log(format$2(delta, left));
};



var jsonpatch = Object.freeze({
	default: JSONFormatter,
	format: format$2,
	log: log
});

function chalkColor(name) {
  return chalk && chalk[name] || function () {
    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return args;
  };
}

var colors = {
  added: chalkColor('green'),
  deleted: chalkColor('red'),
  movedestination: chalkColor('gray'),
  moved: chalkColor('yellow'),
  unchanged: chalkColor('gray'),
  error: chalkColor('white.bgRed'),
  textDiffLine: chalkColor('gray')
};

var ConsoleFormatter = function (_BaseFormatter) {
  inherits(ConsoleFormatter, _BaseFormatter);

  function ConsoleFormatter() {
    classCallCheck(this, ConsoleFormatter);

    var _this = possibleConstructorReturn(this, (ConsoleFormatter.__proto__ || Object.getPrototypeOf(ConsoleFormatter)).call(this));

    _this.includeMoveDestinations = false;
    return _this;
  }

  createClass(ConsoleFormatter, [{
    key: 'prepareContext',
    value: function prepareContext(context) {
      get(ConsoleFormatter.prototype.__proto__ || Object.getPrototypeOf(ConsoleFormatter.prototype), 'prepareContext', this).call(this, context);
      context.indent = function (levels) {
        this.indentLevel = (this.indentLevel || 0) + (typeof levels === 'undefined' ? 1 : levels);
        this.indentPad = new Array(this.indentLevel + 1).join('  ');
        this.outLine();
      };
      context.outLine = function () {
        this.buffer.push('\n' + (this.indentPad || ''));
      };
      context.out = function () {
        for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
          args[_key2] = arguments[_key2];
        }

        for (var i = 0, l = args.length; i < l; i++) {
          var lines = args[i].split('\n');
          var text = lines.join('\n' + (this.indentPad || ''));
          if (this.color && this.color[0]) {
            text = this.color[0](text);
          }
          this.buffer.push(text);
        }
      };
      context.pushColor = function (color) {
        this.color = this.color || [];
        this.color.unshift(color);
      };
      context.popColor = function () {
        this.color = this.color || [];
        this.color.shift();
      };
    }
  }, {
    key: 'typeFormattterErrorFormatter',
    value: function typeFormattterErrorFormatter(context, err) {
      context.pushColor(colors.error);
      context.out('[ERROR]' + err);
      context.popColor();
    }
  }, {
    key: 'formatValue',
    value: function formatValue(context, value) {
      context.out(JSON.stringify(value, null, 2));
    }
  }, {
    key: 'formatTextDiffString',
    value: function formatTextDiffString(context, value) {
      var lines = this.parseTextDiff(value);
      context.indent();
      for (var i = 0, l = lines.length; i < l; i++) {
        var line = lines[i];
        context.pushColor(colors.textDiffLine);
        context.out(line.location.line + ',' + line.location.chr + ' ');
        context.popColor();
        var pieces = line.pieces;
        for (var pieceIndex = 0, piecesLength = pieces.length; pieceIndex < piecesLength; pieceIndex++) {
          var piece = pieces[pieceIndex];
          context.pushColor(colors[piece.type]);
          context.out(piece.text);
          context.popColor();
        }
        if (i < l - 1) {
          context.outLine();
        }
      }
      context.indent(-1);
    }
  }, {
    key: 'rootBegin',
    value: function rootBegin(context, type, nodeType) {
      context.pushColor(colors[type]);
      if (type === 'node') {
        context.out(nodeType === 'array' ? '[' : '{');
        context.indent();
      }
    }
  }, {
    key: 'rootEnd',
    value: function rootEnd(context, type, nodeType) {
      if (type === 'node') {
        context.indent(-1);
        context.out(nodeType === 'array' ? ']' : '}');
      }
      context.popColor();
    }
  }, {
    key: 'nodeBegin',
    value: function nodeBegin(context, key, leftKey, type, nodeType) {
      context.pushColor(colors[type]);
      context.out(leftKey + ': ');
      if (type === 'node') {
        context.out(nodeType === 'array' ? '[' : '{');
        context.indent();
      }
    }
  }, {
    key: 'nodeEnd',
    value: function nodeEnd(context, key, leftKey, type, nodeType, isLast) {
      if (type === 'node') {
        context.indent(-1);
        context.out(nodeType === 'array' ? ']' : '}' + (isLast ? '' : ','));
      }
      if (!isLast) {
        context.outLine();
      }
      context.popColor();
    }

    /* jshint camelcase: false */
    /* eslint-disable camelcase */

  }, {
    key: 'format_unchanged',
    value: function format_unchanged(context, delta, left) {
      if (typeof left === 'undefined') {
        return;
      }
      this.formatValue(context, left);
    }
  }, {
    key: 'format_movedestination',
    value: function format_movedestination(context, delta, left) {
      if (typeof left === 'undefined') {
        return;
      }
      this.formatValue(context, left);
    }
  }, {
    key: 'format_node',
    value: function format_node(context, delta, left) {
      // recurse
      this.formatDeltaChildren(context, delta, left);
    }
  }, {
    key: 'format_added',
    value: function format_added(context, delta) {
      this.formatValue(context, delta[0]);
    }
  }, {
    key: 'format_modified',
    value: function format_modified(context, delta) {
      context.pushColor(colors.deleted);
      this.formatValue(context, delta[0]);
      context.popColor();
      context.out(' => ');
      context.pushColor(colors.added);
      this.formatValue(context, delta[1]);
      context.popColor();
    }
  }, {
    key: 'format_deleted',
    value: function format_deleted(context, delta) {
      this.formatValue(context, delta[0]);
    }
  }, {
    key: 'format_moved',
    value: function format_moved(context, delta) {
      context.out('==> ' + delta[1]);
    }
  }, {
    key: 'format_textdiff',
    value: function format_textdiff(context, delta) {
      this.formatTextDiffString(context, delta[0]);
    }
  }]);
  return ConsoleFormatter;
}(BaseFormatter);

var defaultInstance$3 = void 0;

var format$3 = function format(delta, left) {
  if (!defaultInstance$3) {
    defaultInstance$3 = new ConsoleFormatter();
  }
  return defaultInstance$3.format(delta, left);
};

function log$1(delta, left) {
  console.log(format$3(delta, left));
}



var console$1 = Object.freeze({
	default: ConsoleFormatter,
	format: format$3,
	log: log$1
});



var index = Object.freeze({
	base: base,
	html: html,
	annotated: annotated,
	jsonpatch: jsonpatch,
	console: console$1
});

// use as 2nd parameter for JSON.parse to revive Date instances
function dateReviver(key, value) {
  var parts = void 0;
  if (typeof value === 'string') {
    // eslint-disable-next-line max-len
    parts = /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})(?:\.(\d*))?(Z|([+-])(\d{2}):(\d{2}))$/.exec(value);
    if (parts) {
      return new Date(Date.UTC(+parts[1], +parts[2] - 1, +parts[3], +parts[4], +parts[5], +parts[6], +(parts[7] || 0)));
    }
  }
  return value;
}

function create(options) {
  return new DiffPatcher(options);
}

var defaultInstance$4 = void 0;

function diff() {
  if (!defaultInstance$4) {
    defaultInstance$4 = new DiffPatcher();
  }
  return defaultInstance$4.diff.apply(defaultInstance$4, arguments);
}

function patch() {
  if (!defaultInstance$4) {
    defaultInstance$4 = new DiffPatcher();
  }
  return defaultInstance$4.patch.apply(defaultInstance$4, arguments);
}

function unpatch() {
  if (!defaultInstance$4) {
    defaultInstance$4 = new DiffPatcher();
  }
  return defaultInstance$4.unpatch.apply(defaultInstance$4, arguments);
}

function reverse() {
  if (!defaultInstance$4) {
    defaultInstance$4 = new DiffPatcher();
  }
  return defaultInstance$4.reverse.apply(defaultInstance$4, arguments);
}

function clone$1() {
  if (!defaultInstance$4) {
    defaultInstance$4 = new DiffPatcher();
  }
  return defaultInstance$4.clone.apply(defaultInstance$4, arguments);
}

exports.DiffPatcher = DiffPatcher;
exports.formatters = index;
exports.console = console$1;
exports.create = create;
exports.dateReviver = dateReviver;
exports.diff = diff;
exports.patch = patch;
exports.unpatch = unpatch;
exports.reverse = reverse;
exports.clone = clone$1;
//# sourceMappingURL=jsondiffpatch.cjs.js.map