@microsoft/recognizers-text-sequence/dist/recognizers-text-sequence.umd.js

recognizers-text-sequence provides robust recognition and resolution of series entities like phone numbers, URLs, and e-mail and IP addresses.

(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
	typeof define === 'function' && define.amd ? define(['exports'], factory) :
	(factory((global.microsoftRecognizersTextSequence = {})));
}(this, (function (exports) { 'use strict';

function unwrapExports (x) {
	return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
}

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

var culture = createCommonjsModule(function (module, exports) {
"use strict";
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
Object.defineProperty(exports, "__esModule", { value: true });
class Culture {
    constructor(cultureName, cultureCode) {
        this.cultureName = cultureName;
        this.cultureCode = cultureCode;
    }
    static getSupportedCultureCodes() {
        return Culture.supportedCultures.map(c => c.cultureCode);
    }
    static mapToNearestLanguage(cultureCode) {
        if (cultureCode !== undefined) {
            cultureCode = cultureCode.toLowerCase();
            let supportedCultureCodes = Culture.getSupportedCultureCodes();
            if (supportedCultureCodes.indexOf(cultureCode) < 0) {
                let culturePrefix = cultureCode.split('-')[0].trim();
                supportedCultureCodes.forEach(function (supportedCultureCode) {
                    if (supportedCultureCode.startsWith(culturePrefix)) {
                        cultureCode = supportedCultureCode;
                    }
                });
            }
        }
        return cultureCode;
    }
}
Culture.English = "en-us";
Culture.EnglishOthers = "en-*";
Culture.Chinese = "zh-cn";
Culture.Spanish = "es-es";
Culture.Portuguese = "pt-br";
Culture.French = "fr-fr";
Culture.German = "de-de";
Culture.Japanese = "ja-jp";
Culture.Dutch = "nl-nl";
Culture.Italian = "it-it";
Culture.supportedCultures = [
    new Culture("English", Culture.English),
    new Culture("EnglishOthers", Culture.EnglishOthers),
    new Culture("Chinese", Culture.Chinese),
    new Culture("Spanish", Culture.Spanish),
    new Culture("Portuguese", Culture.Portuguese),
    new Culture("French", Culture.French),
    new Culture("German", Culture.German),
    new Culture("Japanese", Culture.Japanese),
    new Culture("Dutch", Culture.Dutch),
    new Culture("Italian", Culture.Italian)
];
exports.Culture = Culture;
class CultureInfo {
    static getCultureInfo(cultureCode) {
        return new CultureInfo(cultureCode);
    }
    constructor(cultureName) {
        this.code = cultureName;
    }
}
exports.CultureInfo = CultureInfo;

});

unwrapExports(culture);

var xregexp = createCommonjsModule(function (module, exports) {
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }

function _iterableToArrayLimit(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"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

/*!
 * XRegExp 4.2.0
 * <xregexp.com>
 * Steven Levithan (c) 2007-present MIT License
 */

/**
 * XRegExp provides augmented, extensible regular expressions. You get additional regex syntax and
 * flags, beyond what browsers support natively. XRegExp is also a regex utility belt with tools to
 * make your client-side grepping simpler and more powerful, while freeing you from related
 * cross-browser inconsistencies.
 */
// ==--------------------------==
// Private stuff
// ==--------------------------==
// Property name used for extended regex instance data
var REGEX_DATA = 'xregexp'; // Optional features that can be installed and uninstalled

var features = {
  astral: false,
  namespacing: false
}; // Native methods to use and restore ('native' is an ES3 reserved keyword)

var nativ = {
  exec: RegExp.prototype.exec,
  test: RegExp.prototype.test,
  match: String.prototype.match,
  replace: String.prototype.replace,
  split: String.prototype.split
}; // Storage for fixed/extended native methods

var fixed = {}; // Storage for regexes cached by `XRegExp.cache`

var regexCache = {}; // Storage for pattern details cached by the `XRegExp` constructor

var patternCache = {}; // Storage for regex syntax tokens added internally or by `XRegExp.addToken`

var tokens = []; // Token scopes

var defaultScope = 'default';
var classScope = 'class'; // Regexes that match native regex syntax, including octals

var nativeTokens = {
  // Any native multicharacter token in default scope, or any single character
  'default': /\\(?:0(?:[0-3][0-7]{0,2}|[4-7][0-7]?)?|[1-9]\d*|x[\dA-Fa-f]{2}|u(?:[\dA-Fa-f]{4}|{[\dA-Fa-f]+})|c[A-Za-z]|[\s\S])|\(\?(?:[:=!]|<[=!])|[?*+]\?|{\d+(?:,\d*)?}\??|[\s\S]/,
  // Any native multicharacter token in character class scope, or any single character
  'class': /\\(?:[0-3][0-7]{0,2}|[4-7][0-7]?|x[\dA-Fa-f]{2}|u(?:[\dA-Fa-f]{4}|{[\dA-Fa-f]+})|c[A-Za-z]|[\s\S])|[\s\S]/
}; // Any backreference or dollar-prefixed character in replacement strings

var replacementToken = /\$(?:{([\w$]+)}|<([\w$]+)>|(\d\d?|[\s\S]))/g; // Check for correct `exec` handling of nonparticipating capturing groups

var correctExecNpcg = nativ.exec.call(/()??/, '')[1] === undefined; // Check for ES6 `flags` prop support

var hasFlagsProp = /x/.flags !== undefined; // Shortcut to `Object.prototype.toString`

var _ref = {},
    toString = _ref.toString;

function hasNativeFlag(flag) {
  // Can't check based on the presence of properties/getters since browsers might support such
  // properties even when they don't support the corresponding flag in regex construction (tested
  // in Chrome 48, where `'unicode' in /x/` is true but trying to construct a regex with flag `u`
  // throws an error)
  var isSupported = true;

  try {
    // Can't use regex literals for testing even in a `try` because regex literals with
    // unsupported flags cause a compilation error in IE
    new RegExp('', flag);
  } catch (exception) {
    isSupported = false;
  }

  return isSupported;
} // Check for ES6 `u` flag support


var hasNativeU = hasNativeFlag('u'); // Check for ES6 `y` flag support

var hasNativeY = hasNativeFlag('y'); // Tracker for known flags, including addon flags

var registeredFlags = {
  g: true,
  i: true,
  m: true,
  u: hasNativeU,
  y: hasNativeY
};
/**
 * Attaches extended data and `XRegExp.prototype` properties to a regex object.
 *
 * @private
 * @param {RegExp} regex Regex to augment.
 * @param {Array} captureNames Array with capture names, or `null`.
 * @param {String} xSource XRegExp pattern used to generate `regex`, or `null` if N/A.
 * @param {String} xFlags XRegExp flags used to generate `regex`, or `null` if N/A.
 * @param {Boolean} [isInternalOnly=false] Whether the regex will be used only for internal
 *   operations, and never exposed to users. For internal-only regexes, we can improve perf by
 *   skipping some operations like attaching `XRegExp.prototype` properties.
 * @returns {RegExp} Augmented regex.
 */

function augment(regex, captureNames, xSource, xFlags, isInternalOnly) {
  regex[REGEX_DATA] = {
    captureNames: captureNames
  };

  if (isInternalOnly) {
    return regex;
  } // Can't auto-inherit these since the XRegExp constructor returns a nonprimitive value


  if (regex.__proto__) {
    regex.__proto__ = XRegExp.prototype;
  } else {
    for (var p in XRegExp.prototype) {
      // An `XRegExp.prototype.hasOwnProperty(p)` check wouldn't be worth it here, since this
      // is performance sensitive, and enumerable `Object.prototype` or `RegExp.prototype`
      // extensions exist on `regex.prototype` anyway
      regex[p] = XRegExp.prototype[p];
    }
  }

  regex[REGEX_DATA].source = xSource; // Emulate the ES6 `flags` prop by ensuring flags are in alphabetical order

  regex[REGEX_DATA].flags = xFlags ? xFlags.split('').sort().join('') : xFlags;
  return regex;
}
/**
 * Removes any duplicate characters from the provided string.
 *
 * @private
 * @param {String} str String to remove duplicate characters from.
 * @returns {String} String with any duplicate characters removed.
 */


function clipDuplicates(str) {
  return nativ.replace.call(str, /([\s\S])(?=[\s\S]*\1)/g, '');
}
/**
 * Copies a regex object while preserving extended data and augmenting with `XRegExp.prototype`
 * properties. The copy has a fresh `lastIndex` property (set to zero). Allows adding and removing
 * flags g and y while copying the regex.
 *
 * @private
 * @param {RegExp} regex Regex to copy.
 * @param {Object} [options] Options object with optional properties:
 *   - `addG` {Boolean} Add flag g while copying the regex.
 *   - `addY` {Boolean} Add flag y while copying the regex.
 *   - `removeG` {Boolean} Remove flag g while copying the regex.
 *   - `removeY` {Boolean} Remove flag y while copying the regex.
 *   - `isInternalOnly` {Boolean} Whether the copied regex will be used only for internal
 *     operations, and never exposed to users. For internal-only regexes, we can improve perf by
 *     skipping some operations like attaching `XRegExp.prototype` properties.
 *   - `source` {String} Overrides `<regex>.source`, for special cases.
 * @returns {RegExp} Copy of the provided regex, possibly with modified flags.
 */


function copyRegex(regex, options) {
  if (!XRegExp.isRegExp(regex)) {
    throw new TypeError('Type RegExp expected');
  }

  var xData = regex[REGEX_DATA] || {};
  var flags = getNativeFlags(regex);
  var flagsToAdd = '';
  var flagsToRemove = '';
  var xregexpSource = null;
  var xregexpFlags = null;
  options = options || {};

  if (options.removeG) {
    flagsToRemove += 'g';
  }

  if (options.removeY) {
    flagsToRemove += 'y';
  }

  if (flagsToRemove) {
    flags = nativ.replace.call(flags, new RegExp("[".concat(flagsToRemove, "]+"), 'g'), '');
  }

  if (options.addG) {
    flagsToAdd += 'g';
  }

  if (options.addY) {
    flagsToAdd += 'y';
  }

  if (flagsToAdd) {
    flags = clipDuplicates(flags + flagsToAdd);
  }

  if (!options.isInternalOnly) {
    if (xData.source !== undefined) {
      xregexpSource = xData.source;
    } // null or undefined; don't want to add to `flags` if the previous value was null, since
    // that indicates we're not tracking original precompilation flags


    if (xData.flags != null) {
      // Flags are only added for non-internal regexes by `XRegExp.globalize`. Flags are never
      // removed for non-internal regexes, so don't need to handle it
      xregexpFlags = flagsToAdd ? clipDuplicates(xData.flags + flagsToAdd) : xData.flags;
    }
  } // Augment with `XRegExp.prototype` properties, but use the native `RegExp` constructor to avoid
  // searching for special tokens. That would be wrong for regexes constructed by `RegExp`, and
  // unnecessary for regexes constructed by `XRegExp` because the regex has already undergone the
  // translation to native regex syntax


  regex = augment(new RegExp(options.source || regex.source, flags), hasNamedCapture(regex) ? xData.captureNames.slice(0) : null, xregexpSource, xregexpFlags, options.isInternalOnly);
  return regex;
}
/**
 * Converts hexadecimal to decimal.
 *
 * @private
 * @param {String} hex
 * @returns {Number}
 */


function dec(hex) {
  return parseInt(hex, 16);
}
/**
 * Returns a pattern that can be used in a native RegExp in place of an ignorable token such as an
 * inline comment or whitespace with flag x. This is used directly as a token handler function
 * passed to `XRegExp.addToken`.
 *
 * @private
 * @param {String} match Match arg of `XRegExp.addToken` handler
 * @param {String} scope Scope arg of `XRegExp.addToken` handler
 * @param {String} flags Flags arg of `XRegExp.addToken` handler
 * @returns {String} Either '' or '(?:)', depending on which is needed in the context of the match.
 */


function getContextualTokenSeparator(match, scope, flags) {
  if ( // No need to separate tokens if at the beginning or end of a group
  match.input[match.index - 1] === '(' || match.input[match.index + match[0].length] === ')' || // No need to separate tokens if before or after a `|`
  match.input[match.index - 1] === '|' || match.input[match.index + match[0].length] === '|' || // No need to separate tokens if at the beginning or end of the pattern
  match.index < 1 || match.index + match[0].length >= match.input.length || // No need to separate tokens if at the beginning of a noncapturing group or lookahead.
  // The way this is written relies on:
  // - The search regex matching only 3-char strings.
  // - Although `substr` gives chars from the end of the string if given a negative index,
  //   the resulting substring will be too short to match. Ex: `'abcd'.substr(-1, 3) === 'd'`
  nativ.test.call(/^\(\?[:=!]/, match.input.substr(match.index - 3, 3)) || // Avoid separating tokens when the following token is a quantifier
  isQuantifierNext(match.input, match.index + match[0].length, flags)) {
    return '';
  } // Keep tokens separated. This avoids e.g. inadvertedly changing `\1 1` or `\1(?#)1` to `\11`.
  // This also ensures all tokens remain as discrete atoms, e.g. it avoids converting the syntax
  // error `(? :` into `(?:`.


  return '(?:)';
}
/**
 * Returns native `RegExp` flags used by a regex object.
 *
 * @private
 * @param {RegExp} regex Regex to check.
 * @returns {String} Native flags in use.
 */


function getNativeFlags(regex) {
  return hasFlagsProp ? regex.flags : // Explicitly using `RegExp.prototype.toString` (rather than e.g. `String` or concatenation
  // with an empty string) allows this to continue working predictably when
  // `XRegExp.proptotype.toString` is overridden
  nativ.exec.call(/\/([a-z]*)$/i, RegExp.prototype.toString.call(regex))[1];
}
/**
 * Determines whether a regex has extended instance data used to track capture names.
 *
 * @private
 * @param {RegExp} regex Regex to check.
 * @returns {Boolean} Whether the regex uses named capture.
 */


function hasNamedCapture(regex) {
  return !!(regex[REGEX_DATA] && regex[REGEX_DATA].captureNames);
}
/**
 * Converts decimal to hexadecimal.
 *
 * @private
 * @param {Number|String} dec
 * @returns {String}
 */


function hex(dec) {
  return parseInt(dec, 10).toString(16);
}
/**
 * Checks whether the next nonignorable token after the specified position is a quantifier.
 *
 * @private
 * @param {String} pattern Pattern to search within.
 * @param {Number} pos Index in `pattern` to search at.
 * @param {String} flags Flags used by the pattern.
 * @returns {Boolean} Whether the next nonignorable token is a quantifier.
 */


function isQuantifierNext(pattern, pos, flags) {
  return nativ.test.call(flags.indexOf('x') !== -1 ? // Ignore any leading whitespace, line comments, and inline comments
  /^(?:\s|#[^#\n]*|\(\?#[^)]*\))*(?:[?*+]|{\d+(?:,\d*)?})/ : // Ignore any leading inline comments
  /^(?:\(\?#[^)]*\))*(?:[?*+]|{\d+(?:,\d*)?})/, pattern.slice(pos));
}
/**
 * Determines whether a value is of the specified type, by resolving its internal [[Class]].
 *
 * @private
 * @param {*} value Object to check.
 * @param {String} type Type to check for, in TitleCase.
 * @returns {Boolean} Whether the object matches the type.
 */


function isType(value, type) {
  return toString.call(value) === "[object ".concat(type, "]");
}
/**
 * Adds leading zeros if shorter than four characters. Used for fixed-length hexadecimal values.
 *
 * @private
 * @param {String} str
 * @returns {String}
 */


function pad4(str) {
  while (str.length < 4) {
    str = "0".concat(str);
  }

  return str;
}
/**
 * Checks for flag-related errors, and strips/applies flags in a leading mode modifier. Offloads
 * the flag preparation logic from the `XRegExp` constructor.
 *
 * @private
 * @param {String} pattern Regex pattern, possibly with a leading mode modifier.
 * @param {String} flags Any combination of flags.
 * @returns {Object} Object with properties `pattern` and `flags`.
 */


function prepareFlags(pattern, flags) {
  // Recent browsers throw on duplicate flags, so copy this behavior for nonnative flags
  if (clipDuplicates(flags) !== flags) {
    throw new SyntaxError("Invalid duplicate regex flag ".concat(flags));
  } // Strip and apply a leading mode modifier with any combination of flags except g or y


  pattern = nativ.replace.call(pattern, /^\(\?([\w$]+)\)/, function ($0, $1) {
    if (nativ.test.call(/[gy]/, $1)) {
      throw new SyntaxError("Cannot use flag g or y in mode modifier ".concat($0));
    } // Allow duplicate flags within the mode modifier


    flags = clipDuplicates(flags + $1);
    return '';
  }); // Throw on unknown native or nonnative flags

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

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

      if (!registeredFlags[flag]) {
        throw new SyntaxError("Unknown regex flag ".concat(flag));
      }
    }
  } catch (err) {
    _didIteratorError = true;
    _iteratorError = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion && _iterator.return != null) {
        _iterator.return();
      }
    } finally {
      if (_didIteratorError) {
        throw _iteratorError;
      }
    }
  }

  return {
    pattern: pattern,
    flags: flags
  };
}
/**
 * Prepares an options object from the given value.
 *
 * @private
 * @param {String|Object} value Value to convert to an options object.
 * @returns {Object} Options object.
 */


function prepareOptions(value) {
  var options = {};

  if (isType(value, 'String')) {
    XRegExp.forEach(value, /[^\s,]+/, function (match) {
      options[match] = true;
    });
    return options;
  }

  return value;
}
/**
 * Registers a flag so it doesn't throw an 'unknown flag' error.
 *
 * @private
 * @param {String} flag Single-character flag to register.
 */


function registerFlag(flag) {
  if (!/^[\w$]$/.test(flag)) {
    throw new Error('Flag must be a single character A-Za-z0-9_$');
  }

  registeredFlags[flag] = true;
}
/**
 * Runs built-in and custom regex syntax tokens in reverse insertion order at the specified
 * position, until a match is found.
 *
 * @private
 * @param {String} pattern Original pattern from which an XRegExp object is being built.
 * @param {String} flags Flags being used to construct the regex.
 * @param {Number} pos Position to search for tokens within `pattern`.
 * @param {Number} scope Regex scope to apply: 'default' or 'class'.
 * @param {Object} context Context object to use for token handler functions.
 * @returns {Object} Object with properties `matchLength`, `output`, and `reparse`; or `null`.
 */


function runTokens(pattern, flags, pos, scope, context) {
  var i = tokens.length;
  var leadChar = pattern[pos];
  var result = null;
  var match;
  var t; // Run in reverse insertion order

  while (i--) {
    t = tokens[i];

    if (t.leadChar && t.leadChar !== leadChar || t.scope !== scope && t.scope !== 'all' || t.flag && !(flags.indexOf(t.flag) !== -1)) {
      continue;
    }

    match = XRegExp.exec(pattern, t.regex, pos, 'sticky');

    if (match) {
      result = {
        matchLength: match[0].length,
        output: t.handler.call(context, match, scope, flags),
        reparse: t.reparse
      }; // Finished with token tests

      break;
    }
  }

  return result;
}
/**
 * Enables or disables implicit astral mode opt-in. When enabled, flag A is automatically added to
 * all new regexes created by XRegExp. This causes an error to be thrown when creating regexes if
 * the Unicode Base addon is not available, since flag A is registered by that addon.
 *
 * @private
 * @param {Boolean} on `true` to enable; `false` to disable.
 */


function setAstral(on) {
  features.astral = on;
}
/**
 * Adds named capture groups to the `groups` property of match arrays. See here for details:
 * https://github.com/tc39/proposal-regexp-named-groups
 *
 * @private
 * @param {Boolean} on `true` to enable; `false` to disable.
 */


function setNamespacing(on) {
  features.namespacing = on;
}
/**
 * Returns the object, or throws an error if it is `null` or `undefined`. This is used to follow
 * the ES5 abstract operation `ToObject`.
 *
 * @private
 * @param {*} value Object to check and return.
 * @returns {*} The provided object.
 */


function toObject(value) {
  // null or undefined
  if (value == null) {
    throw new TypeError('Cannot convert null or undefined to object');
  }

  return value;
} // ==--------------------------==
// Constructor
// ==--------------------------==

/**
 * Creates an extended regular expression object for matching text with a pattern. Differs from a
 * native regular expression in that additional syntax and flags are supported. The returned object
 * is in fact a native `RegExp` and works with all native methods.
 *
 * @class XRegExp
 * @constructor
 * @param {String|RegExp} pattern Regex pattern string, or an existing regex object to copy.
 * @param {String} [flags] Any combination of flags.
 *   Native flags:
 *     - `g` - global
 *     - `i` - ignore case
 *     - `m` - multiline anchors
 *     - `u` - unicode (ES6)
 *     - `y` - sticky (Firefox 3+, ES6)
 *   Additional XRegExp flags:
 *     - `n` - explicit capture
 *     - `s` - dot matches all (aka singleline)
 *     - `x` - free-spacing and line comments (aka extended)
 *     - `A` - astral (requires the Unicode Base addon)
 *   Flags cannot be provided when constructing one `RegExp` from another.
 * @returns {RegExp} Extended regular expression object.
 * @example
 *
 * // With named capture and flag x
 * XRegExp(`(?<year>  [0-9]{4} ) -?  # year
 *          (?<month> [0-9]{2} ) -?  # month
 *          (?<day>   [0-9]{2} )     # day`, 'x');
 *
 * // Providing a regex object copies it. Native regexes are recompiled using native (not XRegExp)
 * // syntax. Copies maintain extended data, are augmented with `XRegExp.prototype` properties, and
 * // have fresh `lastIndex` properties (set to zero).
 * XRegExp(/regex/);
 */


function XRegExp(pattern, flags) {
  if (XRegExp.isRegExp(pattern)) {
    if (flags !== undefined) {
      throw new TypeError('Cannot supply flags when copying a RegExp');
    }

    return copyRegex(pattern);
  } // Copy the argument behavior of `RegExp`


  pattern = pattern === undefined ? '' : String(pattern);
  flags = flags === undefined ? '' : String(flags);

  if (XRegExp.isInstalled('astral') && !(flags.indexOf('A') !== -1)) {
    // This causes an error to be thrown if the Unicode Base addon is not available
    flags += 'A';
  }

  if (!patternCache[pattern]) {
    patternCache[pattern] = {};
  }

  if (!patternCache[pattern][flags]) {
    var context = {
      hasNamedCapture: false,
      captureNames: []
    };
    var scope = defaultScope;
    var output = '';
    var pos = 0;
    var result; // Check for flag-related errors, and strip/apply flags in a leading mode modifier

    var applied = prepareFlags(pattern, flags);
    var appliedPattern = applied.pattern;
    var appliedFlags = applied.flags; // Use XRegExp's tokens to translate the pattern to a native regex pattern.
    // `appliedPattern.length` may change on each iteration if tokens use `reparse`

    while (pos < appliedPattern.length) {
      do {
        // Check for custom tokens at the current position
        result = runTokens(appliedPattern, appliedFlags, pos, scope, context); // If the matched token used the `reparse` option, splice its output into the
        // pattern before running tokens again at the same position

        if (result && result.reparse) {
          appliedPattern = appliedPattern.slice(0, pos) + result.output + appliedPattern.slice(pos + result.matchLength);
        }
      } while (result && result.reparse);

      if (result) {
        output += result.output;
        pos += result.matchLength || 1;
      } else {
        // Get the native token at the current position
        var _XRegExp$exec = XRegExp.exec(appliedPattern, nativeTokens[scope], pos, 'sticky'),
            _XRegExp$exec2 = _slicedToArray(_XRegExp$exec, 1),
            token = _XRegExp$exec2[0];

        output += token;
        pos += token.length;

        if (token === '[' && scope === defaultScope) {
          scope = classScope;
        } else if (token === ']' && scope === classScope) {
          scope = defaultScope;
        }
      }
    }

    patternCache[pattern][flags] = {
      // Use basic cleanup to collapse repeated empty groups like `(?:)(?:)` to `(?:)`. Empty
      // groups are sometimes inserted during regex transpilation in order to keep tokens
      // separated. However, more than one empty group in a row is never needed.
      pattern: nativ.replace.call(output, /(?:\(\?:\))+/g, '(?:)'),
      // Strip all but native flags
      flags: nativ.replace.call(appliedFlags, /[^gimuy]+/g, ''),
      // `context.captureNames` has an item for each capturing group, even if unnamed
      captures: context.hasNamedCapture ? context.captureNames : null
    };
  }

  var generated = patternCache[pattern][flags];
  return augment(new RegExp(generated.pattern, generated.flags), generated.captures, pattern, flags);
} // Add `RegExp.prototype` to the prototype chain


XRegExp.prototype = /(?:)/; // ==--------------------------==
// Public properties
// ==--------------------------==

/**
 * The XRegExp version number as a string containing three dot-separated parts. For example,
 * '2.0.0-beta-3'.
 *
 * @static
 * @memberOf XRegExp
 * @type String
 */

XRegExp.version = '4.2.0'; // ==--------------------------==
// Public methods
// ==--------------------------==
// Intentionally undocumented; used in tests and addons

XRegExp._clipDuplicates = clipDuplicates;
XRegExp._hasNativeFlag = hasNativeFlag;
XRegExp._dec = dec;
XRegExp._hex = hex;
XRegExp._pad4 = pad4;
/**
 * Extends XRegExp syntax and allows custom flags. This is used internally and can be used to
 * create XRegExp addons. If more than one token can match the same string, the last added wins.
 *
 * @memberOf XRegExp
 * @param {RegExp} regex Regex object that matches the new token.
 * @param {Function} handler Function that returns a new pattern string (using native regex syntax)
 *   to replace the matched token within all future XRegExp regexes. Has access to persistent
 *   properties of the regex being built, through `this`. Invoked with three arguments:
 *   - The match array, with named backreference properties.
 *   - The regex scope where the match was found: 'default' or 'class'.
 *   - The flags used by the regex, including any flags in a leading mode modifier.
 *   The handler function becomes part of the XRegExp construction process, so be careful not to
 *   construct XRegExps within the function or you will trigger infinite recursion.
 * @param {Object} [options] Options object with optional properties:
 *   - `scope` {String} Scope where the token applies: 'default', 'class', or 'all'.
 *   - `flag` {String} Single-character flag that triggers the token. This also registers the
 *     flag, which prevents XRegExp from throwing an 'unknown flag' error when the flag is used.
 *   - `optionalFlags` {String} Any custom flags checked for within the token `handler` that are
 *     not required to trigger the token. This registers the flags, to prevent XRegExp from
 *     throwing an 'unknown flag' error when any of the flags are used.
 *   - `reparse` {Boolean} Whether the `handler` function's output should not be treated as
 *     final, and instead be reparseable by other tokens (including the current token). Allows
 *     token chaining or deferring.
 *   - `leadChar` {String} Single character that occurs at the beginning of any successful match
 *     of the token (not always applicable). This doesn't change the behavior of the token unless
 *     you provide an erroneous value. However, providing it can increase the token's performance
 *     since the token can be skipped at any positions where this character doesn't appear.
 * @example
 *
 * // Basic usage: Add \a for the ALERT control code
 * XRegExp.addToken(
 *   /\\a/,
 *   () => '\\x07',
 *   {scope: 'all'}
 * );
 * XRegExp('\\a[\\a-\\n]+').test('\x07\n\x07'); // -> true
 *
 * // Add the U (ungreedy) flag from PCRE and RE2, which reverses greedy and lazy quantifiers.
 * // Since `scope` is not specified, it uses 'default' (i.e., transformations apply outside of
 * // character classes only)
 * XRegExp.addToken(
 *   /([?*+]|{\d+(?:,\d*)?})(\??)/,
 *   (match) => `${match[1]}${match[2] ? '' : '?'}`,
 *   {flag: 'U'}
 * );
 * XRegExp('a+', 'U').exec('aaa')[0]; // -> 'a'
 * XRegExp('a+?', 'U').exec('aaa')[0]; // -> 'aaa'
 */

XRegExp.addToken = function (regex, handler, options) {
  options = options || {};
  var _options = options,
      optionalFlags = _options.optionalFlags;

  if (options.flag) {
    registerFlag(options.flag);
  }

  if (optionalFlags) {
    optionalFlags = nativ.split.call(optionalFlags, '');
    var _iteratorNormalCompletion2 = true;
    var _didIteratorError2 = false;
    var _iteratorError2 = undefined;

    try {
      for (var _iterator2 = optionalFlags[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {
        var flag = _step2.value;
        registerFlag(flag);
      }
    } catch (err) {
      _didIteratorError2 = true;
      _iteratorError2 = err;
    } finally {
      try {
        if (!_iteratorNormalCompletion2 && _iterator2.return != null) {
          _iterator2.return();
        }
      } finally {
        if (_didIteratorError2) {
          throw _iteratorError2;
        }
      }
    }
  } // Add to the private list of syntax tokens


  tokens.push({
    regex: copyRegex(regex, {
      addG: true,
      addY: hasNativeY,
      isInternalOnly: true
    }),
    handler: handler,
    scope: options.scope || defaultScope,
    flag: options.flag,
    reparse: options.reparse,
    leadChar: options.leadChar
  }); // Reset the pattern cache used by the `XRegExp` constructor, since the same pattern and flags
  // might now produce different results

  XRegExp.cache.flush('patterns');
};
/**
 * Caches and returns the result of calling `XRegExp(pattern, flags)`. On any subsequent call with
 * the same pattern and flag combination, the cached copy of the regex is returned.
 *
 * @memberOf XRegExp
 * @param {String} pattern Regex pattern string.
 * @param {String} [flags] Any combination of XRegExp flags.
 * @returns {RegExp} Cached XRegExp object.
 * @example
 *
 * while (match = XRegExp.cache('.', 'gs').exec(str)) {
 *   // The regex is compiled once only
 * }
 */


XRegExp.cache = function (pattern, flags) {
  if (!regexCache[pattern]) {
    regexCache[pattern] = {};
  }

  return regexCache[pattern][flags] || (regexCache[pattern][flags] = XRegExp(pattern, flags));
}; // Intentionally undocumented; used in tests


XRegExp.cache.flush = function (cacheName) {
  if (cacheName === 'patterns') {
    // Flush the pattern cache used by the `XRegExp` constructor
    patternCache = {};
  } else {
    // Flush the regex cache populated by `XRegExp.cache`
    regexCache = {};
  }
};
/**
 * Escapes any regular expression metacharacters, for use when matching literal strings. The result
 * can safely be used at any point within a regex that uses any flags.
 *
 * @memberOf XRegExp
 * @param {String} str String to escape.
 * @returns {String} String with regex metacharacters escaped.
 * @example
 *
 * XRegExp.escape('Escaped? <.>');
 * // -> 'Escaped\?\ <\.>'
 */


XRegExp.escape = function (str) {
  return nativ.replace.call(toObject(str), /[-\[\]{}()*+?.,\\^$|#\s]/g, '\\$&');
};
/**
 * Executes a regex search in a specified string. Returns a match array or `null`. If the provided
 * regex uses named capture, named backreference properties are included on the match array.
 * Optional `pos` and `sticky` arguments specify the search start position, and whether the match
 * must start at the specified position only. The `lastIndex` property of the provided regex is not
 * used, but is updated for compatibility. Also fixes browser bugs compared to the native
 * `RegExp.prototype.exec` and can be used reliably cross-browser.
 *
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {RegExp} regex Regex to search with.
 * @param {Number} [pos=0] Zero-based index at which to start the search.
 * @param {Boolean|String} [sticky=false] Whether the match must start at the specified position
 *   only. The string `'sticky'` is accepted as an alternative to `true`.
 * @returns {Array} Match array with named backreference properties, or `null`.
 * @example
 *
 * // Basic use, with named backreference
 * let match = XRegExp.exec('U+2620', XRegExp('U\\+(?<hex>[0-9A-F]{4})'));
 * match.hex; // -> '2620'
 *
 * // With pos and sticky, in a loop
 * let pos = 2, result = [], match;
 * while (match = XRegExp.exec('<1><2><3><4>5<6>', /<(\d)>/, pos, 'sticky')) {
 *   result.push(match[1]);
 *   pos = match.index + match[0].length;
 * }
 * // result -> ['2', '3', '4']
 */


XRegExp.exec = function (str, regex, pos, sticky) {
  var cacheKey = 'g';
  var addY = false;
  var fakeY = false;
  var match;
  addY = hasNativeY && !!(sticky || regex.sticky && sticky !== false);

  if (addY) {
    cacheKey += 'y';
  } else if (sticky) {
    // Simulate sticky matching by appending an empty capture to the original regex. The
    // resulting regex will succeed no matter what at the current index (set with `lastIndex`),
    // and will not search the rest of the subject string. We'll know that the original regex
    // has failed if that last capture is `''` rather than `undefined` (i.e., if that last
    // capture participated in the match).
    fakeY = true;
    cacheKey += 'FakeY';
  }

  regex[REGEX_DATA] = regex[REGEX_DATA] || {}; // Shares cached copies with `XRegExp.match`/`replace`

  var r2 = regex[REGEX_DATA][cacheKey] || (regex[REGEX_DATA][cacheKey] = copyRegex(regex, {
    addG: true,
    addY: addY,
    source: fakeY ? "".concat(regex.source, "|()") : undefined,
    removeY: sticky === false,
    isInternalOnly: true
  }));
  pos = pos || 0;
  r2.lastIndex = pos; // Fixed `exec` required for `lastIndex` fix, named backreferences, etc.

  match = fixed.exec.call(r2, str); // Get rid of the capture added by the pseudo-sticky matcher if needed. An empty string means
  // the original regexp failed (see above).

  if (fakeY && match && match.pop() === '') {
    match = null;
  }

  if (regex.global) {
    regex.lastIndex = match ? r2.lastIndex : 0;
  }

  return match;
};
/**
 * Executes a provided function once per regex match. Searches always start at the beginning of the
 * string and continue until the end, regardless of the state of the regex's `global` property and
 * initial `lastIndex`.
 *
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {RegExp} regex Regex to search with.
 * @param {Function} callback Function to execute for each match. Invoked with four arguments:
 *   - The match array, with named backreference properties.
 *   - The zero-based match index.
 *   - The string being traversed.
 *   - The regex object being used to traverse the string.
 * @example
 *
 * // Extracts every other digit from a string
 * const evens = [];
 * XRegExp.forEach('1a2345', /\d/, (match, i) => {
 *   if (i % 2) evens.push(+match[0]);
 * });
 * // evens -> [2, 4]
 */


XRegExp.forEach = function (str, regex, callback) {
  var pos = 0;
  var i = -1;
  var match;

  while (match = XRegExp.exec(str, regex, pos)) {
    // Because `regex` is provided to `callback`, the function could use the deprecated/
    // nonstandard `RegExp.prototype.compile` to mutate the regex. However, since `XRegExp.exec`
    // doesn't use `lastIndex` to set the search position, this can't lead to an infinite loop,
    // at least. Actually, because of the way `XRegExp.exec` caches globalized versions of
    // regexes, mutating the regex will not have any effect on the iteration or matched strings,
    // which is a nice side effect that brings extra safety.
    callback(match, ++i, str, regex);
    pos = match.index + (match[0].length || 1);
  }
};
/**
 * Copies a regex object and adds flag `g`. The copy maintains extended data, is augmented with
 * `XRegExp.prototype` properties, and has a fresh `lastIndex` property (set to zero). Native
 * regexes are not recompiled using XRegExp syntax.
 *
 * @memberOf XRegExp
 * @param {RegExp} regex Regex to globalize.
 * @returns {RegExp} Copy of the provided regex with flag `g` added.
 * @example
 *
 * const globalCopy = XRegExp.globalize(/regex/);
 * globalCopy.global; // -> true
 */


XRegExp.globalize = function (regex) {
  return copyRegex(regex, {
    addG: true
  });
};
/**
 * Installs optional features according to the specified options. Can be undone using
 * `XRegExp.uninstall`.
 *
 * @memberOf XRegExp
 * @param {Object|String} options Options object or string.
 * @example
 *
 * // With an options object
 * XRegExp.install({
 *   // Enables support for astral code points in Unicode addons (implicitly sets flag A)
 *   astral: true,
 *
 *   // Adds named capture groups to the `groups` property of matches
 *   namespacing: true
 * });
 *
 * // With an options string
 * XRegExp.install('astral namespacing');
 */


XRegExp.install = function (options) {
  options = prepareOptions(options);

  if (!features.astral && options.astral) {
    setAstral(true);
  }

  if (!features.namespacing && options.namespacing) {
    setNamespacing(true);
  }
};
/**
 * Checks whether an individual optional feature is installed.
 *
 * @memberOf XRegExp
 * @param {String} feature Name of the feature to check. One of:
 *   - `astral`
 *   - `namespacing`
 * @returns {Boolean} Whether the feature is installed.
 * @example
 *
 * XRegExp.isInstalled('astral');
 */


XRegExp.isInstalled = function (feature) {
  return !!features[feature];
};
/**
 * Returns `true` if an object is a regex; `false` if it isn't. This works correctly for regexes
 * created in another frame, when `instanceof` and `constructor` checks would fail.
 *
 * @memberOf XRegExp
 * @param {*} value Object to check.
 * @returns {Boolean} Whether the object is a `RegExp` object.
 * @example
 *
 * XRegExp.isRegExp('string'); // -> false
 * XRegExp.isRegExp(/regex/i); // -> true
 * XRegExp.isRegExp(RegExp('^', 'm')); // -> true
 * XRegExp.isRegExp(XRegExp('(?s).')); // -> true
 */


XRegExp.isRegExp = function (value) {
  return toString.call(value) === '[object RegExp]';
}; // isType(value, 'RegExp');

/**
 * Returns the first matched string, or in global mode, an array containing all matched strings.
 * This is essentially a more convenient re-implementation of `String.prototype.match` that gives
 * the result types you actually want (string instead of `exec`-style array in match-first mode,
 * and an empty array instead of `null` when no matches are found in match-all mode). It also lets
 * you override flag g and ignore `lastIndex`, and fixes browser bugs.
 *
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {RegExp} regex Regex to search with.
 * @param {String} [scope='one'] Use 'one' to return the first match as a string. Use 'all' to
 *   return an array of all matched strings. If not explicitly specified and `regex` uses flag g,
 *   `scope` is 'all'.
 * @returns {String|Array} In match-first mode: First match as a string, or `null`. In match-all
 *   mode: Array of all matched strings, or an empty array.
 * @example
 *
 * // Match first
 * XRegExp.match('abc', /\w/); // -> 'a'
 * XRegExp.match('abc', /\w/g, 'one'); // -> 'a'
 * XRegExp.match('abc', /x/g, 'one'); // -> null
 *
 * // Match all
 * XRegExp.match('abc', /\w/g); // -> ['a', 'b', 'c']
 * XRegExp.match('abc', /\w/, 'all'); // -> ['a', 'b', 'c']
 * XRegExp.match('abc', /x/, 'all'); // -> []
 */


XRegExp.match = function (str, regex, scope) {
  var global = regex.global && scope !== 'one' || scope === 'all';
  var cacheKey = (global ? 'g' : '') + (regex.sticky ? 'y' : '') || 'noGY';
  regex[REGEX_DATA] = regex[REGEX_DATA] || {}; // Shares cached copies with `XRegExp.exec`/`replace`

  var r2 = regex[REGEX_DATA][cacheKey] || (regex[REGEX_DATA][cacheKey] = copyRegex(regex, {
    addG: !!global,
    removeG: scope === 'one',
    isInternalOnly: true
  }));
  var result = nativ.match.call(toObject(str), r2);

  if (regex.global) {
    regex.lastIndex = scope === 'one' && result ? // Can't use `r2.lastIndex` since `r2` is nonglobal in this case
    result.index + result[0].length : 0;
  }

  return global ? result || [] : result && result[0];
};
/**
 * Retrieves the matches from searching a string using a chain of regexes that successively search
 * within previous matches. The provided `chain` array can contain regexes and or objects with
 * `regex` and `backref` properties. When a backreference is specified, the named or numbered
 * backreference is passed forward to the next regex or returned.
 *
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {Array} chain Regexes that each search for matches within preceding results.
 * @returns {Array} Matches by the last regex in the chain, or an empty array.
 * @example
 *
 * // Basic usage; matches numbers within <b> tags
 * XRegExp.matchChain('1 <b>2</b> 3 <b>4 a 56</b>', [
 *   XRegExp('(?is)<b>.*?</b>'),
 *   /\d+/
 * ]);
 * // -> ['2', '4', '56']
 *
 * // Passing forward and returning specific backreferences
 * html = '<a href="http://xregexp.com/api/">XRegExp</a>\
 *         <a href="http://www.google.com/">Google</a>';
 * XRegExp.matchChain(html, [
 *   {regex: /<a href="([^"]+)">/i, backref: 1},
 *   {regex: XRegExp('(?i)^https?://(?<domain>[^/?#]+)'), backref: 'domain'}
 * ]);
 * // -> ['xregexp.com', 'www.google.com']
 */


XRegExp.matchChain = function (str, chain) {
  return function recurseChain(values, level) {
    var item = chain[level].regex ? chain[level] : {
      regex: chain[level]
    };
    var matches = [];

    function addMatch(match) {
      if (item.backref) {
        var ERR_UNDEFINED_GROUP = "Backreference to undefined group: ".concat(item.backref);
        var isNamedBackref = isNaN(item.backref);

        if (isNamedBackref && XRegExp.isInstalled('namespacing')) {
          // `groups` has `null` as prototype, so using `in` instead of `hasOwnProperty`
          if (!(item.backref in match.groups)) {
            throw new ReferenceError(ERR_UNDEFINED_GROUP);
          }
        } else if (!match.hasOwnProperty(item.backref)) {
          throw new ReferenceError(ERR_UNDEFINED_GROUP);
        }

        var backrefValue = isNamedBackref && XRegExp.isInstalled('namespacing') ? match.groups[item.backref] : match[item.backref];
        matches.push(backrefValue || '');
      } else {
        matches.push(match[0]);
      }
    }

    var _iteratorNormalCompletion3 = true;
    var _didIteratorError3 = false;
    var _iteratorError3 = undefined;

    try {
      for (var _iterator3 = values[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {
        var value = _step3.value;
        XRegExp.forEach(value, item.regex, addMatch);
      }
    } catch (err) {
      _didIteratorError3 = true;
      _iteratorError3 = err;
    } finally {
      try {
        if (!_iteratorNormalCompletion3 && _iterator3.return != null) {
          _iterator3.return();
        }
      } finally {
        if (_didIteratorError3) {
          throw _iteratorError3;
        }
      }
    }

    return level === chain.length - 1 || !matches.length ? matches : recurseChain(matches, level + 1);
  }([str], 0);
};
/**
 * Returns a new string with one or all matches of a pattern replaced. The pattern can be a string
 * or regex, and the replacement can be a string or a function to be called for each match. To
 * perform a global search and replace, use the optional `scope` argument or include flag g if using
 * a regex. Replacement strings can use `${n}` or `$<n>` for named and numbered backreferences.
 * Replacement functions can use named backreferences via `arguments[0].name`. Also fixes browser
 * bugs compared to the native `String.prototype.replace` and can be used reliably cross-browser.
 *
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {RegExp|String} search Search pattern to be replaced.
 * @param {String|Function} replacement Replacement string or a function invoked to create it.
 *   Replacement strings can include special replacement syntax:
 *     - $$ - Inserts a literal $ character.
 *     - $&, $0 - Inserts the matched substring.
 *     - $` - Inserts the string that precedes the matched substring (left context).
 *     - $' - Inserts the string that follows the matched substring (right context).
 *     - $n, $nn - Where n/nn are digits referencing an existent capturing group, inserts
 *       backreference n/nn.
 *     - ${n}, $<n> - Where n is a name or any number of digits that reference an existent capturing
 *       group, inserts backreference n.
 *   Replacement functions are invoked with three or more arguments:
 *     - The matched substring (corresponds to $& above). Named backreferences are accessible as
 *       properties of this first argument.
 *     - 0..n arguments, one for each backreference (corresponding to $1, $2, etc. above).
 *     - The zero-based index of the match within the total search string.
 *     - The total string being searched.
 * @param {String} [scope='one'] Use 'one' to replace the first match only, or 'all'. If not
 *   explicitly specified and using a regex with flag g, `scope` is 'all'.
 * @returns {String} New string with one or all matches replaced.
 * @example
 *
 * // Regex search, using named backreferences in replacement string
 * const name = XRegExp('(?<first>\\w+) (?<last>\\w+)');
 * XRegExp.replace('John Smith', name, '$<last>, $<first>');
 * // -> 'Smith, John'
 *
 * // Regex search, using named backreferences in replacement function
 * XRegExp.replace('John Smith', name, (match) => `${match.last}, ${match.first}`);
 * // -> 'Smith, John'
 *
 * // String search, with replace-all
 * XRegExp.replace('RegExp builds RegExps', 'RegExp', 'XRegExp', 'all');
 * // -> 'XRegExp builds XRegExps'
 */


XRegExp.replace = function (str, search, replacement, scope) {
  var isRegex = XRegExp.isRegExp(search);
  var global = search.global && scope !== 'one' || scope === 'all';
  var cacheKey = (global ? 'g' : '') + (search.sticky ? 'y' : '') || 'noGY';
  var s2 = search;

  if (isRegex) {
    search[REGEX_DATA] = search[REGEX_DATA] || {}; // Shares cached copies with `XRegExp.exec`/`match`. Since a copy is used, `search`'s
    // `lastIndex` isn't updated *during* replacement iterations

    s2 = search[REGEX_DATA][cacheKey] || (search[REGEX_DATA][cacheKey] = copyRegex(search, {
      addG: !!global,
      removeG: scope === 'one',
      isInternalOnly: true
    }));
  } else if (global) {
    s2 = new RegExp(XRegExp.escape(String(search)), 'g');
  } // Fixed `replace` required for named backreferences, etc.


  var result = fixed.replace.call(toObject(str), s2, replacement);

  if (isRegex && search.global) {
    // Fixes IE, Safari bug (last tested IE 9, Safari 5.1)
    search.lastIndex = 0;
  }

  return result;
};
/**
 * Performs batch processing of string replacements. Used like `XRegExp.replace`, but accepts an
 * array of replacement details. Later replacements operate on the output of earlier replacements.
 * Replacement details are accepted as an array with a regex or string to search for, the
 * replacement string or function, and an optional scope of 'one' or 'all'. Uses the XRegExp
 * replacement text syntax, which supports named backreference properties via `${name}` or
 * `$<name>`.
 *
 * @memberOf XRegExp
 * @param {String} str String to search.
 * @param {Array} replacements Array of replacement detail arrays.
 * @returns {String} New string with all replacements.
 * @example
 *
 * str = XRegExp.replaceEach(str, [
 *   [XRegExp('(?<name>a)'), 'z${name}'],
 *   [/b/gi, 'y'],
 *   [/c/g, 'x', 'one'], // scope 'one' overrides /g
 *   [/d/, 'w', 'all'],  // scope 'all' overrides lack of /g
 *   ['e', 'v', 'all'],  // scope 'all' allows replace-all for strings
 *   [/f/g, ($0) => $0.toUpperCase()]
 * ]);
 */


XRegExp.replaceEach = function (str, replacements) {
  var _iteratorNormalCompletion4 = true;
  var _didIteratorError4 = false;
  var _iteratorError4 = undefined;

  try {
    for (var _iterator4 = replacements[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {
      var r = _step4.value;
      str = XRegExp.replace(str, r[0], r[1], r[2]);
    }
  } catch (err) {
    _didIteratorError4 = true;
    _iteratorError4 = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion4 && _iterator4.return != null) {
        _iterator4.return();
      }
    } finally {
      if (_didIteratorError4) {
        throw _iteratorError4;
      }
    }
  }

  return str;
};
/**
 * Splits a string into an array of strings using a regex or string separator.