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; }

import { parseString } from 'xml2js';
import { DIGIT_PLACEHOLDER } from '../AsYouType'; // import { isSingleIDDPrefix } from '../IDD'

var phone_number_types = ['premium_rate', 'toll_free', 'shared_cost', 'voip', 'personal_number', 'pager', 'uan', 'voice_mail', 'fixed_line', 'mobile']; // Excessive fields from "PhoneNumberMetadata.xml"
// aren't included to reduce code complexity and size:
//
// * `<references>` — a link to ITU (International Telecommunication Union)
//                    document describing phone numbering plan for a country
//
// * `<noInternationalDialling>` — who needs to input non-internationally-dialable phones
//
// * `<areaCodeOptional>` — we aren't in the XXth century,
//                          it's a globalized world, so write your
//                          phone numbers with area codes.
//
// * `<fixedLine>`, `<mobile>`, `<pager>`,
//   `<tollFree>`, `<premiumRate>`,
//   `<sharedCost>`, `<personalNumber>`,
//   `<voip>`, `<uan>`, `<voicemail>` — who needs that in the XXIst century.
//                                      just go mobile and stop talking nonsense.
//
// * `internationalPrefix`,
//   `preferredInternationalPrefix` — who needs to parse (or format) those weird
//                                    "internationally dialed" phone numbers
//                                    like "011 ..." in the USA.
//                                    this isn't XXth century, just use mobile phones.
//
// * `preferredExtnPrefix` — Localized " ext. ". E.g. ", доб. " instead of " ext. " for Russia.
//
// * `leadingZeroPossible` — (aka "italian leading zero")
//                           who needs to parse a phone number into an integer.
//                           just keep it as a string.
//
// * `carrierCodeFormattingRule` — only used in Brazil and Colombia
//                                 when dialing from within those countries
//                                 from mobile phones to fixed line phone numbers.
//                                 i guess brazilians and colombians
//                                 already know when to add those carrier codes
//                                 by themselves (and when not to add them)
//
// * `mobileNumberPortableRegion` — is only used to disable phone number type detection
//
// * `<possibleLengths>` — is a redundant field to speed up testing of
//                         whether a phone number format can be used to format
//                         a particular national (significant) phone number.
//
// `libphonenumber/BuildMetadataFromXml.java` was used as a reference.
// https://github.com/googlei18n/libphonenumber/blob/master/tools/java/common/src/com/google/i18n/phonenumbers/BuildMetadataFromXml.java
//
// There are three Xml metadata files in Google's `libphonenumber`:
//
//  * PhoneNumberMetadata.xml — core data, used both for parse/format and "as you type"
//
//  * PhoneNumberAlternateFormats.xml — alternative phone number formats.
//                                      is presumably used for parsing phone numbers
//                                      written in "alternative" formats.
//                                      is not used by "as you type"
//                                      presumably because of formats ambiguity
//                                      when combined with the core data.
//                                      this metadata is not used in this library
//                                      as there's no clear description on what to do with it
//                                      and how it works in the original `libphonenumber` code.
//
//  * ShortNumberMetadata.xml — emergency numbers, etc. not used in this library.
//
// @returns
//
// {
// 	country_calling_codes:
// 	{
// 		'7': ['RU', 'KZ', ...],
// 		...
// 	},
// 	countries:
// 	{
// 		RU:
// 		{
// 			phone_code: "7",
// 			national_number_pattern: "[347-9]\\d{9}",
// 			national_prefix: "8",
// 			national_prefix_formatting_rule: "8 ($1)",
// 			national_prefix_is_optional_when_formatting: true,
// 			types:
// 			{
// 				fixed_line: "(?:3(?:0[12]|4[1-35-79]|5[1-3]|65|8[1-58]|9[0145])|4(?:01|1[1356]|2[13467]|7[1-5]|8[1-7]|9[1-689])|8(?:1[1-8]|2[01]|3[13-6]|4[0-8]|5[15]|6[1-35-79]|7[1-37-9]))\\d{7}",
// 				mobile: "9\\d{9}",
// 				...
// 			},
// 			examples:
// 			{
// 				fixed_line: '4955553535',
// 				mobile: '9991234567',
// 				...
// 			},
// 			formats:
// 			[{
// 				pattern: "([3489]\\d{2})(\\d{3})(\\d{2})(\\d{2})",
// 				leading_digits_patterns: ["[3489]"],
// 				format: "$1 $2-$3-$4"
// 			},
// 			...]
// 		},
// 		...
// 	}
// }
//
// `country_calling_codes` map is kinda redundant.
// Not sure why did I choose to place country phone codes
// into a separate structure inside metadata instead of generating it in runtime.
// One extra feature it gives though is it tells what's the
// "default" country for a given country phone code.
// E.g. for country phone code `1` the "default" country is "US"
// and therefore "US" is the first country code in the
// `country_calling_codes["1"]` list.
// The "default" country is the one other countries
// with the same country phone code inherit phone number formatting rules from.
// For example, "CA" (Canada) inhertis phone number formatting rules from "US".
//
// `country_calling_codes` data takes about 3 KiloBytes
// so it could kinda make sense to drop it from the metadata file
// replacing it with a "default" country flag (something like `1` for "yes").
// In that scenario `country_calling_codes` would be generated on startup.
// It would have to also provide an exported `getCountryPhoneCodes()` function
// which would take `metadata` and return `country_calling_codes` map
// because some people use that `country_calling_codes` map in their projects.
//
// On the other hand, having `country_calling_codes`
// prepopulated yields more elegance to the exports
// because if `country_calling_codes` wasn't part of metadata
// it would have to be computed somewhere in global scope
// therefore the modules wouldn't be strictly "pure"
// so maybe `country_calling_codes` stays as part of metadata.
//

export default function (input, version, included_countries, extended, included_phone_number_types) {
  // Validate `included_phone_number_types`
  if (included_phone_number_types) {
    for (var _iterator = included_phone_number_types, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
      var _ref;

      if (_isArray) {
        if (_i >= _iterator.length) break;
        _ref = _iterator[_i++];
      } else {
        _i = _iterator.next();
        if (_i.done) break;
        _ref = _i.value;
      }

      var _type = _ref;

      if (phone_number_types.indexOf(_type) < 0) {
        return Promise.reject("Unknown phone number type: ".concat(_type));
      }
    }
  } // Parse the XML metadata.
  // See: https://github.com/catamphetamine/libphonenumber-js/blob/master/METADATA.md


  return parseStringPromisified(input).then(function (xml) {
    // https://github.com/googlei18n/libphonenumber/blob/master/resources/PhoneNumberMetadata.xml
    // https://github.com/googlei18n/libphonenumber/blob/master/resources/phonemetadata.proto
    // https://github.com/googlei18n/libphonenumber/blob/master/javascript/i18n/phonenumbers/phonenumberutil.js
    // https://github.com/googlei18n/libphonenumber/blob/master/javascript/i18n/phonenumbers/asyoutypeformatter.js
    var country_calling_code_to_countries = {};
    var countries = {};

    var _loop2 = function _loop2() {
      if (_isArray2) {
        if (_i2 >= _iterator2.length) return "break";
        _ref2 = _iterator2[_i2++];
      } else {
        _i2 = _iterator2.next();
        if (_i2.done) return "break";
        _ref2 = _i2.value;
      }

      var territory = _ref2;
      // A two-letter country code
      var country_code = territory.$.id; // Skip this country if it has not been explicitly included

      if (included_countries && !included_countries.has(country_code)) {
        return "continue";
      }

      if (territory.$.nationalPrefixOptionalWhenFormatting) {
        throw new Error('`nationalPrefixOptionalWhenFormatting` encountered on a country level: uncomment the relevant code part below.');
      } // Country metadata


      var country = {
        // Phone code related fields:
        // Phone code for phone numbers in this country.
        //
        // E.g. `1` for both USA and Canada.
        //
        phone_code: territory.$.countryCode,
        // International Direct Dialing prefix.
        idd_prefix: territory.$.internationalPrefix,
        default_idd_prefix: territory.$.preferredInternationalPrefix,
        // Localized " ext. " prefix.
        ext: territory.$.preferredExtnPrefix,
        // In case of several countries
        // having the same country phone code,
        // these leading digits are the means
        // of classifying an international phone number
        // whether it belongs to a certain country.
        //
        // E.g. for Antigua and Barbuda
        // country phone code is `1` (same as USA)
        // and leading digits are `268`.
        //
        leading_digits: territory.$.leadingDigits,
        // The regular expression of all possible
        // national (significant) numbers for this country.
        national_number_pattern: territory.generalDesc[0].nationalNumberPattern[0].replace(/\s/g, ''),
        // National prefix related fields:
        // aka "trunk code".
        // This is the prefix prepended to a
        // national (significant) phone number
        // when dialed from within the country.
        // E.g. `0` for UK.
        national_prefix: territory.$.nationalPrefix,
        // In some (many) countries the national prefix
        // is not just a constant digit (like `0` in UK)
        // but can be different depending on the phone number
        // (and can be also absent for some phone numbers).
        //
        // So `national_prefix_for_parsing` is used when parsing
        // a national-prefixed (local) phone number
        // into a national significant phone number
        // extracting that possible national prefix out of it.
        //
        national_prefix_for_parsing: territory.$.nationalPrefixForParsing ? territory.$.nationalPrefixForParsing.replace(/\s/g, '') : undefined,
        // If `national_prefix_for_parsing` regular expression
        // contains "captured groups", then `national_prefix_transform_rule`
        // defines how the national-prefixed (local) phone number is
        // parsed into a national significant phone number.
        //
        // Pseudocode:
        //
        // national_prefix_pattern = regular_expression('^(?:' + national_prefix_for_parsing + ')')
        // national_significant_number = all_digits.replace(national_prefix_pattern, national_prefix_transform_rule)
        //
        // E.g. if a country's national numbers are 6-digit
        // and national prefix is always `0`,
        // then `national_prefix_for_parsing` could be `0(\d{6})`
        // and the corresponding `national_prefix_transform_rule` would be `$1`
        // (which is the default behaviour).
        //
        // Currently this feature is only used in
        // Argentina, Brazil, Mexico and San Marino
        // due to their messy telephone numbering plans.
        //
        // For example, mobile numbers in Argentina are written in two completely
        // different ways when dialed in-country and out-of-country
        // (e.g. 0343 15-555-1212 is exactly the same number as +54 9 3435 55 1212).
        // Therefore for Argentina `national_prefix_transform_rule` is `9$1`.
        //
        national_prefix_transform_rule: territory.$.nationalPrefixTransformRule,
        // Controls how national prefix is written
        // in a formatted local phone number.
        //
        // E.g. in Armenia national prefix is `0`
        // and `national_prefix_formatting_rule` is `($NP$FG)`
        // which means that a national significant phone number `xxxxxxxx`
        // matching phone number pattern `(\d{2})(\d{6})` with format `$1 $2`
        // is written as a local phone number `(0xx) xxxxxx`.
        //
        // Can be `undefined`.
        //
        national_prefix_formatting_rule: national_prefix_formatting_rule(territory.$.nationalPrefixFormattingRule, territory.$.nationalPrefix),
        // Is it possible that a national (significant)
        // phone number has leading zeroes?
        //
        // E.g. in Gabon some numbers start with a `0`
        // while the national prefix is also `0`
        // which is optional for mobile numbers.
        //
        // This seems to only be used for validating
        // possible formats in AsYouType formatter.
        //
        // national_prefix_is_optional_when_formatting: territory.$.nationalPrefixOptionalWhenFormatting ? Boolean(territory.$.nationalPrefixOptionalWhenFormatting) : undefined,
        // I suppose carrier codes can be omitted.
        // They are required only for Brazil and Columbia,
        // and only when calling to fixed line numbers
        // from mobile phones within those countries.
        // I guess people living in those countries
        // would know that they need to add carrier codes.
        // Other people don't need to know that.
        // Anyway, if someone sends a Pull Request
        // implementing carrier codes as Google's `libphonenumber` does
        // then such Pull Request will likely be merged.
        //
        // // In some countries carrier code is required
        // // to dial certain phone numbers.
        // //
        // // E.g. in Colombia calling to fixed line numbers
        // // from mobile phones requires a carrier code when called within Colombia.
        // // Or, for example, Brazilian fixed line and mobile numbers
        // // need to be dialed with a carrier code when called within Brazil.
        // // Without that, most of the carriers won't connect the call.
        // // These are the only two cases when "carrier codes" are required.
        // //
        // carrier_code_formatting_rule: territory.$.carrierCodeFormattingRule,
        // These `types` will be purged later,
        // if they're not needed (which is most likely).
        // See `country_calling_code_to_countries` ambiguity for more info.
        //
        types: get_phone_number_types(territory),
        // Will be filtered out during compression phase
        examples: get_phone_number_examples(territory) // Check that national (significant) phone number pattern
        // is set for this country (no "default" value here)

      };

      if (!country.national_number_pattern) {
        throw new Error("\"generalDesc.nationalNumberPattern\" is missing for country ".concat(country_code, " metadata"));
      } // Check that an IDD prefix is always defined.


      if (country_code !== '001' && !country.idd_prefix) {
        throw new Error("\"generalDesc.internationalPrefix\" is missing for country ".concat(country_code, " metadata"));
      } // // Check that a preferred IDD prefix is always defined if IDD prefix is a pattern.
      // if (country_code !== '001' && !isSingleIDDPrefix(country.idd_prefix) && !country.default_idd_prefix)
      // {
      // 	throw new Error(`"generalDesc.preferredInternationalPrefix" is missing for country ${country_code} metadata`)
      // }
      // Some countries don't have `availableFormats` specified,
      // because those formats are inherited from the "main country for region":
      // all non-"main" countries inherit their formats from the "main" country for that region.


      if (territory.availableFormats) {
        country.formats = territory.availableFormats[0].numberFormat.map(function (number_format) {
          return {
            pattern: number_format.$.pattern,
            leading_digits_patterns: number_format.leadingDigits ? number_format.leadingDigits.map(function (leading_digits) {
              return leading_digits.replace(/\s/g, '');
            }) : undefined,
            national_prefix_formatting_rule: national_prefix_formatting_rule(number_format.$.nationalPrefixFormattingRule, territory.$.nationalPrefix),
            national_prefix_is_optional_when_formatting: number_format.$.nationalPrefixOptionalWhenFormatting ? Boolean(number_format.$.nationalPrefixOptionalWhenFormatting) : undefined,
            format: number_format.format[0],
            international_format: number_format.intlFormat ? number_format.intlFormat[0] : undefined
          };
        }) // Screw local-only formats
        .filter(function (format) {
          return format.international_format !== 'NA';
        }); // Sanity check (using no "default" for this field)

        for (var _iterator5 = country.formats, _isArray5 = Array.isArray(_iterator5), _i8 = 0, _iterator5 = _isArray5 ? _iterator5 : _iterator5[Symbol.iterator]();;) {
          var _ref5;

          if (_isArray5) {
            if (_i8 >= _iterator5.length) break;
            _ref5 = _iterator5[_i8++];
          } else {
            _i8 = _iterator5.next();
            if (_i8.done) break;
            _ref5 = _i8.value;
          }

          var format = _ref5;

          // Never happens
          if (!format.format) {
            throw new Error("No phone number format \"format\" supplied for pattern ".concat(format.pattern, " for ").concat(country_code));
          } // Never happens


          if (format.format.indexOf(DIGIT_PLACEHOLDER) >= 0) {
            throw new Error("Phone number format \"".concat(format.format, "\" contains a reserved \"").concat(DIGIT_PLACEHOLDER, "\" symbol for pattern ").concat(format.pattern, " for ").concat(country_code));
          }
        }
      } // Add this country's metadata
      // to the metadata map.


      countries[country_code] = country; // Register this country's "country phone code"

      if (!country_calling_code_to_countries[country.phone_code]) {
        country_calling_code_to_countries[country.phone_code] = [];
      } // In case of several countries
      // having the same country phone code.
      //
      // E.g. for USA and Canada, USA is the
      // "main country for phone code 1".
      //
      // (maybe this field is not used at all
      //  in which case this field is to be removed)
      //


      if (territory.$.mainCountryForCode === "true") {
        country_calling_code_to_countries[country.phone_code].unshift(country_code);
      } else {
        country_calling_code_to_countries[country.phone_code].push(country_code);
      }
    };

    _loop: for (var _iterator2 = xml.phoneNumberMetadata.territories[0].territory, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator]();;) {
      var _ref2;

      var _ret = _loop2();

      switch (_ret) {
        case "break":
          break _loop;

        case "continue":
          continue;
      }
    } // Some countries don't have `availableFormats` specified,
    // because those formats are meant to be copied from the "main country for region":
    // all non-"main" countries inherit their formats from the "main" country for that region.
    // If that's the case then `nationalPrefixFormattingRule` and
    // `nationalPrefixOptionalWhenFormatting` are also copied from the "main" region.
    // `nationalPrefix` itself though seems to be always present
    // even if it's the same for the "main" region.
    // Examples: "RU" and "KZ", "US" and "CA".


    for (var _i3 = 0, _Object$keys = Object.keys(countries); _i3 < _Object$keys.length; _i3++) {
      var country_code = _Object$keys[_i3];
      var country = countries[country_code];
      var main_country_for_region_code = country_calling_code_to_countries[country.phone_code][0];

      if (main_country_for_region_code === country_code) {
        // Some countries like Saint Helena and Falkland Islands
        // ('AC', 'FK', 'KI', 'NU', 'SH', 'TA', ...)
        // don't have any phone number formats defined
        // and phone numbers are not formatted in those countries.
        if (!country.formats) {
          country.formats = [];
        }
      } else {
        if (country.formats !== undefined) {
          throw new Error("Country \"".concat(country_code, "\" is supposed to inherit formats from \"").concat(main_country_for_region_code, "\" but has its own formats defined."));
        }

        if (country.national_prefix_formatting_rule !== undefined) {
          throw new Error("Country \"".concat(country_code, "\" is supposed to inherit \"national_prefix_formatting_rule\" from \"").concat(main_country_for_region_code, "\" but has its own \"national_prefix_formatting_rule\" defined."));
        }

        if (country.national_prefix_is_optional_when_formatting !== undefined) {
          throw new Error("Country \"".concat(country_code, "\" is supposed to inherit \"national_prefix_is_optional_when_formatting\" from \"").concat(main_country_for_region_code, "\" but has its own \"national_prefix_is_optional_when_formatting\" defined."));
        }
      }
    } // Turns out that `<generalDesc><nationalNumberPattern/></generalDesc>`
    // is not preemptive at all: it's too unspecific for the cases
    // when several countries correspond to the same country phone code
    // (e.g. NANPA: US, Canada, etc — all correspond to the same `1` country phone code).
    // For these cases all those bulky `<fixedLine/>`, `<mobile/>`, etc
    // patterns are required. Therefore retain them for these rare cases.
    //
    // This increases metadata size by 5 KiloBytes.
    //


    var visited_countries = {};

    for (var _i4 = 0, _Object$keys2 = Object.keys(country_calling_code_to_countries); _i4 < _Object$keys2.length; _i4++) {
      var country_calling_code = _Object$keys2[_i4];
      var country_codes = country_calling_code_to_countries[country_calling_code];

      for (var _iterator3 = country_codes, _isArray3 = Array.isArray(_iterator3), _i5 = 0, _iterator3 = _isArray3 ? _iterator3 : _iterator3[Symbol.iterator]();;) {
        var _ref3;

        if (_isArray3) {
          if (_i5 >= _iterator3.length) break;
          _ref3 = _iterator3[_i5++];
        } else {
          _i5 = _iterator3.next();
          if (_i5.done) break;
          _ref3 = _i5.value;
        }

        var _country_code = _ref3;

        if (visited_countries[_country_code]) {
          continue;
        }

        visited_countries[_country_code] = true; // Populate possible lengths

        populate_possible_lengths(countries[_country_code]);

        if (countries[_country_code].possible_lengths.length === 0) {
          throw new Error("No \"possibleLengths\" set for country \"".concat(_country_code, "\". \"react-phone-number-input\" relies on \"possibleLengths\" being always present."));
        }
      } // Purge `types` regular expressions (they are huge)
      // when they're not needed for resolving country phone code
      // to country phone number matching.
      // E.g. when there's a one-to-one correspondence
      // between a country phone code and a country code


      var all_types_required = country_codes.length > 1;

      if (!extended && !included_phone_number_types && !all_types_required) {
        delete countries[country_codes[0]].types;
        continue;
      }

      for (var _iterator4 = country_codes, _isArray4 = Array.isArray(_iterator4), _i6 = 0, _iterator4 = _isArray4 ? _iterator4 : _iterator4[Symbol.iterator]();;) {
        var _ref4;

        if (_isArray4) {
          if (_i6 >= _iterator4.length) break;
          _ref4 = _iterator4[_i6++];
        } else {
          _i6 = _iterator4.next();
          if (_i6.done) break;
          _ref4 = _i6.value;
        }

        var _country_code2 = _ref4;

        // Leading digits for a country are sufficient
        // to resolve country phone code ambiguity.
        // So retaining all phone number type regular expressions
        // is not required in this case.
        if (!extended && !included_phone_number_types) {
          if (countries[_country_code2].leading_digits) {
            delete countries[_country_code2].types;
            continue;
          }
        }

        var types = countries[_country_code2].types; // Find duplicate regular expressions for types
        // and just discard such duplicate types
        // to reduce metadata size (by 5 KiloBytes).
        // Or retain regular expressions just for the
        // specified phone number types (if configured).

        for (var _i7 = 0, _phone_number_types = phone_number_types; _i7 < _phone_number_types.length; _i7++) {
          var _type2 = _phone_number_types[_i7];

          if (!types[_type2]) {
            continue;
          } // Retain regular expressions just for the
          // specified phone number types (if configured).


          if (included_phone_number_types) {
            if (!all_types_required && !included_phone_number_types.has(_type2)) {
              delete types[_type2];
            }
          } // Remove redundant types
          // (other types having the same regular expressions as this one)
          else {
              // Sometimes fixed line pattern is the same as for mobile.
              if (types.fixed_line && types.mobile && types.fixed_line.pattern === types.mobile.pattern) {
                types.mobile.pattern = '';
              }
            }
        }
      }
    }

    return {
      version: version,
      countries: countries,
      country_calling_codes: country_calling_code_to_countries
    };
  });
} // Replaces $NP with national prefix and $FG with the first group ($1)

function national_prefix_formatting_rule(rule, national_prefix) {
  if (!rule) {
    return;
  } // Replace $NP with national prefix and $FG with the first group ($1)


  return rule.replace('$NP', national_prefix).replace('$FG', '$1');
} // Extracts various phone number type patterns from country XML metadata


function get_phone_number_types(territory) {
  return phone_number_types.reduce(function (output, type) {
    var camel_cased_type = underscore_to_camel_case(type);
    var pattern = territory[camel_cased_type] && territory[camel_cased_type][0].nationalNumberPattern[0].replace(/\s/g, '');
    var possible_lengths = territory[camel_cased_type] && territory[camel_cased_type][0].possibleLengths[0].$.national;
    var possible_lengths_local = territory[camel_cased_type] && territory[camel_cased_type][0].possibleLengths[0].$.localOnly;

    if (pattern) {
      output[type] = {
        pattern: pattern,
        possible_lengths: possible_lengths // possible_lengths_local

      };
    }

    return output;
  }, {});
} // Extracts various phone number type examples from country XML metadata


function get_phone_number_examples(territory) {
  return phone_number_types.reduce(function (output, type) {
    var camel_cased_type = underscore_to_camel_case(type);
    var example = territory[camel_cased_type] && territory[camel_cased_type][0].exampleNumber[0];

    if (example) {
      output[type] = example;
    }

    return output;
  }, {});
}

function underscore_to_camel_case(string) {
  return string.replace(/(\_\w)/g, function (match) {
    return match[1].toUpperCase();
  });
}
/**
* Parses a possible length string into a set of the integers that are covered.
*
* @param {string} possible_length_string - A string specifying the possible lengths of phone numbers. Follows
*     this syntax: ranges or elements are separated by commas, and ranges are specified in
*     [min-max] notation, inclusive. For example, [3-5],7,9,[11-14] should be parsed to
*     3,4,5,7,9,11,12,13,14.
* @return {Set}
*/


function parse_possible_lengths(possible_length_string) {
  if (possible_length_string.length === 0) {
    throw new TypeError('Empty possibleLength string found.');
  }

  var lengths = new Set();

  for (var _iterator6 = possible_length_string.split(','), _isArray6 = Array.isArray(_iterator6), _i9 = 0, _iterator6 = _isArray6 ? _iterator6 : _iterator6[Symbol.iterator]();;) {
    var _ref6;

    if (_isArray6) {
      if (_i9 >= _iterator6.length) break;
      _ref6 = _iterator6[_i9++];
    } else {
      _i9 = _iterator6.next();
      if (_i9.done) break;
      _ref6 = _i9.value;
    }

    var length = _ref6;

    if (length.length == 0) {
      throw new TypeError("Leading, trailing or adjacent commas in possible length string ".concat(length, ", these should only separate numbers or ranges."));
    }

    if (length[0] === '[') {
      if (length[length.length - 1] !== ']') {
        throw new TypeError("Missing end of range character in possible length string ".concat(length, "."));
      } // Strip the leading and trailing [], and split on the -.


      var min_max = length.slice(1, length.length - 1).split('-').map(function (_) {
        return parseInt(_);
      });

      if (min_max.length !== 2) {
        throw new TypeError("Ranges must have exactly one - character: missing for ".concat(length, "."));
      }

      var _min_max = _slicedToArray(min_max, 2),
          min = _min_max[0],
          max = _min_max[1]; // We don't even accept [6-7] since we prefer the shorter 6,7 variant;
      // for a range to be in use the hyphen needs to replace at least one digit.


      if (max - min < 2) {
        throw new TypeError("The first number in a range should be two or more digits lower than the second. Culprit possibleLength string: ".concat(length));
      }

      for (var i = min; i <= max; i++) {
        if (lengths.has(i)) {
          throw new TypeError("Duplicate length element found (".concat(i, ") in possibleLength string ").concat(length, "."));
        }

        lengths.add(i);
      }
    } else {
      var _i10 = parseInt(length);

      if (lengths.has(_i10)) {
        throw new TypeError("Duplicate length element found (".concat(_i10, ") in possibleLength string ").concat(length, "."));
      }

      lengths.add(_i10);
    }
  }

  return lengths;
}

var arrays_are_equal = function arrays_are_equal(a1, a2) {
  return a1.length === a2.length && a1.every(function (_, i) {
    return _ === a2[i];
  });
};

function populate_possible_lengths(metadata) {
  var types = metadata.types;
  var possible_lengths = new Set();
  var possible_lengths_local = new Set();

  for (var _i11 = 0, _Object$keys3 = Object.keys(types); _i11 < _Object$keys3.length; _i11++) {
    var _type = _Object$keys3[_i11];
    var type_possible_lengths = parse_possible_lengths(types[_type].possible_lengths);

    for (var _iterator8 = type_possible_lengths, _isArray8 = Array.isArray(_iterator8), _i14 = 0, _iterator8 = _isArray8 ? _iterator8 : _iterator8[Symbol.iterator]();;) {
      var _ref8;

      if (_isArray8) {
        if (_i14 >= _iterator8.length) break;
        _ref8 = _iterator8[_i14++];
      } else {
        _i14 = _iterator8.next();
        if (_i14.done) break;
        _ref8 = _i14.value;
      }

      var _i16 = _ref8;
      possible_lengths.add(_i16);
    }

    types[_type].possible_lengths = Array.from(type_possible_lengths);

    if (types[_type].possible_lengths_local) {
      var type_possible_lengths_local = parse_possible_lengths(types[_type].possible_lengths_local);

      for (var _iterator9 = type_possible_lengths_local, _isArray9 = Array.isArray(_iterator9), _i15 = 0, _iterator9 = _isArray9 ? _iterator9 : _iterator9[Symbol.iterator]();;) {
        var _ref9;

        if (_isArray9) {
          if (_i15 >= _iterator9.length) break;
          _ref9 = _iterator9[_i15++];
        } else {
          _i15 = _iterator9.next();
          if (_i15.done) break;
          _ref9 = _i15.value;
        }

        var i = _ref9;
        possible_lengths_local.add(i);
      }

      types[_type].possible_lengths_local = Array.from(type_possible_lengths_local);
    }
  }

  for (var _iterator7 = possible_lengths_local, _isArray7 = Array.isArray(_iterator7), _i12 = 0, _iterator7 = _isArray7 ? _iterator7 : _iterator7[Symbol.iterator]();;) {
    var _ref7;

    if (_isArray7) {
      if (_i12 >= _iterator7.length) break;
      _ref7 = _iterator7[_i12++];
    } else {
      _i12 = _iterator7.next();
      if (_i12.done) break;
      _ref7 = _i12.value;
    }

    var _i17 = _ref7;

    if (possible_lengths.has(_i17)) {
      possible_lengths_local["delete"](_i17);
    }
  }

  metadata.possible_lengths = Array.from(possible_lengths);
  metadata.possible_lengths.sort(function (a, b) {
    return a - b;
  });

  if (possible_lengths_local.size > 0) {
    metadata.possible_lengths_local = Array.from(possible_lengths_local);
    metadata.possible_lengths_local.sort(function (a, b) {
      return a - b;
    });
  } // Remove duplicates.


  for (var _i13 = 0, _Object$keys4 = Object.keys(types); _i13 < _Object$keys4.length; _i13++) {
    var _type3 = _Object$keys4[_i13];

    if (arrays_are_equal(types[_type3].possible_lengths, metadata.possible_lengths)) {
      delete types[_type3].possible_lengths;
    }

    if (types[_type3].possible_lengths_local && metadata.possible_lengths_local && arrays_are_equal(types[_type3].possible_lengths_local, metadata.possible_lengths_local)) {
      delete types[_type3].possible_lengths_local;
    }
  }
}

function parseStringPromisified(input) {
  return new Promise(function (resolve, reject) {
    parseString(input, function (error, result) {
      if (error) {
        return reject(error);
      }

      resolve(result);
    });
  });
}
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