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Filename : web.url-search-params.constructor.js
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'use strict';
// TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`
require('../modules/es.array.iterator');
require('../modules/es.string.from-code-point');
var $ = require('../internals/export');
var globalThis = require('../internals/global-this');
var safeGetBuiltIn = require('../internals/safe-get-built-in');
var getBuiltIn = require('../internals/get-built-in');
var call = require('../internals/function-call');
var uncurryThis = require('../internals/function-uncurry-this');
var DESCRIPTORS = require('../internals/descriptors');
var USE_NATIVE_URL = require('../internals/url-constructor-detection');
var defineBuiltIn = require('../internals/define-built-in');
var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
var defineBuiltIns = require('../internals/define-built-ins');
var setToStringTag = require('../internals/set-to-string-tag');
var createIteratorConstructor = require('../internals/iterator-create-constructor');
var InternalStateModule = require('../internals/internal-state');
var anInstance = require('../internals/an-instance');
var isCallable = require('../internals/is-callable');
var hasOwn = require('../internals/has-own-property');
var bind = require('../internals/function-bind-context');
var classof = require('../internals/classof');
var anObject = require('../internals/an-object');
var isObject = require('../internals/is-object');
var $toString = require('../internals/to-string');
var create = require('../internals/object-create');
var createPropertyDescriptor = require('../internals/create-property-descriptor');
var getIterator = require('../internals/get-iterator');
var getIteratorMethod = require('../internals/get-iterator-method');
var createIterResultObject = require('../internals/create-iter-result-object');
var validateArgumentsLength = require('../internals/validate-arguments-length');
var wellKnownSymbol = require('../internals/well-known-symbol');
var arraySort = require('../internals/array-sort');

var ITERATOR = wellKnownSymbol('iterator');
var URL_SEARCH_PARAMS = 'URLSearchParams';
var URL_SEARCH_PARAMS_ITERATOR = URL_SEARCH_PARAMS + 'Iterator';
var setInternalState = InternalStateModule.set;
var getInternalParamsState = InternalStateModule.getterFor(URL_SEARCH_PARAMS);
var getInternalIteratorState = InternalStateModule.getterFor(URL_SEARCH_PARAMS_ITERATOR);

var nativeFetch = safeGetBuiltIn('fetch');
var NativeRequest = safeGetBuiltIn('Request');
var Headers = safeGetBuiltIn('Headers');
var RequestPrototype = NativeRequest && NativeRequest.prototype;
var HeadersPrototype = Headers && Headers.prototype;
var TypeError = globalThis.TypeError;
var encodeURIComponent = globalThis.encodeURIComponent;
var fromCharCode = String.fromCharCode;
var fromCodePoint = getBuiltIn('String', 'fromCodePoint');
var $parseInt = parseInt;
var charAt = uncurryThis(''.charAt);
var join = uncurryThis([].join);
var push = uncurryThis([].push);
var replace = uncurryThis(''.replace);
var shift = uncurryThis([].shift);
var splice = uncurryThis([].splice);
var split = uncurryThis(''.split);
var stringSlice = uncurryThis(''.slice);
var exec = uncurryThis(/./.exec);

var plus = /\+/g;
var FALLBACK_REPLACER = '\uFFFD';
var VALID_HEX = /^[0-9a-f]+$/i;

var parseHexOctet = function (string, start) {
  var substr = stringSlice(string, start, start + 2);
  if (!exec(VALID_HEX, substr)) return NaN;

  return $parseInt(substr, 16);
};

var getLeadingOnes = function (octet) {
  var count = 0;
  for (var mask = 0x80; mask > 0 && (octet & mask) !== 0; mask >>= 1) {
    count++;
  }
  return count;
};

var utf8Decode = function (octets) {
  var codePoint = null;

  switch (octets.length) {
    case 1:
      codePoint = octets[0];
      break;
    case 2:
      codePoint = (octets[0] & 0x1F) << 6 | (octets[1] & 0x3F);
      break;
    case 3:
      codePoint = (octets[0] & 0x0F) << 12 | (octets[1] & 0x3F) << 6 | (octets[2] & 0x3F);
      break;
    case 4:
      codePoint = (octets[0] & 0x07) << 18 | (octets[1] & 0x3F) << 12 | (octets[2] & 0x3F) << 6 | (octets[3] & 0x3F);
      break;
  }

  return codePoint > 0x10FFFF ? null : codePoint;
};

var decode = function (input) {
  input = replace(input, plus, ' ');
  var length = input.length;
  var result = '';
  var i = 0;

  while (i < length) {
    var decodedChar = charAt(input, i);

    if (decodedChar === '%') {
      if (charAt(input, i + 1) === '%' || i + 3 > length) {
        result += '%';
        i++;
        continue;
      }

      var octet = parseHexOctet(input, i + 1);

      // eslint-disable-next-line no-self-compare -- NaN check
      if (octet !== octet) {
        result += decodedChar;
        i++;
        continue;
      }

      i += 2;
      var byteSequenceLength = getLeadingOnes(octet);

      if (byteSequenceLength === 0) {
        decodedChar = fromCharCode(octet);
      } else {
        if (byteSequenceLength === 1 || byteSequenceLength > 4) {
          result += FALLBACK_REPLACER;
          i++;
          continue;
        }

        var octets = [octet];
        var sequenceIndex = 1;

        while (sequenceIndex < byteSequenceLength) {
          i++;
          if (i + 3 > length || charAt(input, i) !== '%') break;

          var nextByte = parseHexOctet(input, i + 1);

          // eslint-disable-next-line no-self-compare -- NaN check
          if (nextByte !== nextByte) {
            i += 3;
            break;
          }
          if (nextByte > 191 || nextByte < 128) break;

          push(octets, nextByte);
          i += 2;
          sequenceIndex++;
        }

        if (octets.length !== byteSequenceLength) {
          result += FALLBACK_REPLACER;
          continue;
        }

        var codePoint = utf8Decode(octets);
        if (codePoint === null) {
          result += FALLBACK_REPLACER;
        } else {
          decodedChar = fromCodePoint(codePoint);
        }
      }
    }

    result += decodedChar;
    i++;
  }

  return result;
};

var find = /[!'()~]|%20/g;

var replacements = {
  '!': '%21',
  "'": '%27',
  '(': '%28',
  ')': '%29',
  '~': '%7E',
  '%20': '+'
};

var replacer = function (match) {
  return replacements[match];
};

var serialize = function (it) {
  return replace(encodeURIComponent(it), find, replacer);
};

var URLSearchParamsIterator = createIteratorConstructor(function Iterator(params, kind) {
  setInternalState(this, {
    type: URL_SEARCH_PARAMS_ITERATOR,
    target: getInternalParamsState(params).entries,
    index: 0,
    kind: kind
  });
}, URL_SEARCH_PARAMS, function next() {
  var state = getInternalIteratorState(this);
  var target = state.target;
  var index = state.index++;
  if (!target || index >= target.length) {
    state.target = null;
    return createIterResultObject(undefined, true);
  }
  var entry = target[index];
  switch (state.kind) {
    case 'keys': return createIterResultObject(entry.key, false);
    case 'values': return createIterResultObject(entry.value, false);
  } return createIterResultObject([entry.key, entry.value], false);
}, true);

var URLSearchParamsState = function (init) {
  this.entries = [];
  this.url = null;

  if (init !== undefined) {
    if (isObject(init)) this.parseObject(init);
    else this.parseQuery(typeof init == 'string' ? charAt(init, 0) === '?' ? stringSlice(init, 1) : init : $toString(init));
  }
};

URLSearchParamsState.prototype = {
  type: URL_SEARCH_PARAMS,
  bindURL: function (url) {
    this.url = url;
    this.update();
  },
  parseObject: function (object) {
    var entries = this.entries;
    var iteratorMethod = getIteratorMethod(object);
    var iterator, next, step, entryIterator, entryNext, first, second;

    if (iteratorMethod) {
      iterator = getIterator(object, iteratorMethod);
      next = iterator.next;
      while (!(step = call(next, iterator)).done) {
        entryIterator = getIterator(anObject(step.value));
        entryNext = entryIterator.next;
        if (
          (first = call(entryNext, entryIterator)).done ||
          (second = call(entryNext, entryIterator)).done ||
          !call(entryNext, entryIterator).done
        ) throw new TypeError('Expected sequence with length 2');
        push(entries, { key: $toString(first.value), value: $toString(second.value) });
      }
    } else for (var key in object) if (hasOwn(object, key)) {
      push(entries, { key: key, value: $toString(object[key]) });
    }
  },
  parseQuery: function (query) {
    if (query) {
      var entries = this.entries;
      var attributes = split(query, '&');
      var index = 0;
      var attribute, entry;
      while (index < attributes.length) {
        attribute = attributes[index++];
        if (attribute.length) {
          entry = split(attribute, '=');
          push(entries, {
            key: decode(shift(entry)),
            value: decode(join(entry, '='))
          });
        }
      }
    }
  },
  serialize: function () {
    var entries = this.entries;
    var result = [];
    var index = 0;
    var entry;
    while (index < entries.length) {
      entry = entries[index++];
      push(result, serialize(entry.key) + '=' + serialize(entry.value));
    } return join(result, '&');
  },
  update: function () {
    this.entries.length = 0;
    this.parseQuery(this.url.query);
  },
  updateURL: function () {
    if (this.url) this.url.update();
  }
};

// `URLSearchParams` constructor
// https://url.spec.whatwg.org/#interface-urlsearchparams
var URLSearchParamsConstructor = function URLSearchParams(/* init */) {
  anInstance(this, URLSearchParamsPrototype);
  var init = arguments.length > 0 ? arguments[0] : undefined;
  var state = setInternalState(this, new URLSearchParamsState(init));
  if (!DESCRIPTORS) this.size = state.entries.length;
};

var URLSearchParamsPrototype = URLSearchParamsConstructor.prototype;

defineBuiltIns(URLSearchParamsPrototype, {
  // `URLSearchParams.prototype.append` method
  // https://url.spec.whatwg.org/#dom-urlsearchparams-append
  append: function append(name, value) {
    var state = getInternalParamsState(this);
    validateArgumentsLength(arguments.length, 2);
    push(state.entries, { key: $toString(name), value: $toString(value) });
    if (!DESCRIPTORS) this.length++;
    state.updateURL();
  },
  // `URLSearchParams.prototype.delete` method
  // https://url.spec.whatwg.org/#dom-urlsearchparams-delete
  'delete': function (name /* , value */) {
    var state = getInternalParamsState(this);
    var length = validateArgumentsLength(arguments.length, 1);
    var entries = state.entries;
    var key = $toString(name);
    var $value = length < 2 ? undefined : arguments[1];
    var value = $value === undefined ? $value : $toString($value);
    var index = 0;
    while (index < entries.length) {
      var entry = entries[index];
      if (entry.key === key && (value === undefined || entry.value === value)) {
        splice(entries, index, 1);
        if (value !== undefined) break;
      } else index++;
    }
    if (!DESCRIPTORS) this.size = entries.length;
    state.updateURL();
  },
  // `URLSearchParams.prototype.get` method
  // https://url.spec.whatwg.org/#dom-urlsearchparams-get
  get: function get(name) {
    var entries = getInternalParamsState(this).entries;
    validateArgumentsLength(arguments.length, 1);
    var key = $toString(name);
    var index = 0;
    for (; index < entries.length; index++) {
      if (entries[index].key === key) return entries[index].value;
    }
    return null;
  },
  // `URLSearchParams.prototype.getAll` method
  // https://url.spec.whatwg.org/#dom-urlsearchparams-getall
  getAll: function getAll(name) {
    var entries = getInternalParamsState(this).entries;
    validateArgumentsLength(arguments.length, 1);
    var key = $toString(name);
    var result = [];
    var index = 0;
    for (; index < entries.length; index++) {
      if (entries[index].key === key) push(result, entries[index].value);
    }
    return result;
  },
  // `URLSearchParams.prototype.has` method
  // https://url.spec.whatwg.org/#dom-urlsearchparams-has
  has: function has(name /* , value */) {
    var entries = getInternalParamsState(this).entries;
    var length = validateArgumentsLength(arguments.length, 1);
    var key = $toString(name);
    var $value = length < 2 ? undefined : arguments[1];
    var value = $value === undefined ? $value : $toString($value);
    var index = 0;
    while (index < entries.length) {
      var entry = entries[index++];
      if (entry.key === key && (value === undefined || entry.value === value)) return true;
    }
    return false;
  },
  // `URLSearchParams.prototype.set` method
  // https://url.spec.whatwg.org/#dom-urlsearchparams-set
  set: function set(name, value) {
    var state = getInternalParamsState(this);
    validateArgumentsLength(arguments.length, 1);
    var entries = state.entries;
    var found = false;
    var key = $toString(name);
    var val = $toString(value);
    var index = 0;
    var entry;
    for (; index < entries.length; index++) {
      entry = entries[index];
      if (entry.key === key) {
        if (found) splice(entries, index--, 1);
        else {
          found = true;
          entry.value = val;
        }
      }
    }
    if (!found) push(entries, { key: key, value: val });
    if (!DESCRIPTORS) this.size = entries.length;
    state.updateURL();
  },
  // `URLSearchParams.prototype.sort` method
  // https://url.spec.whatwg.org/#dom-urlsearchparams-sort
  sort: function sort() {
    var state = getInternalParamsState(this);
    arraySort(state.entries, function (a, b) {
      return a.key > b.key ? 1 : -1;
    });
    state.updateURL();
  },
  // `URLSearchParams.prototype.forEach` method
  forEach: function forEach(callback /* , thisArg */) {
    var entries = getInternalParamsState(this).entries;
    var boundFunction = bind(callback, arguments.length > 1 ? arguments[1] : undefined);
    var index = 0;
    var entry;
    while (index < entries.length) {
      entry = entries[index++];
      boundFunction(entry.value, entry.key, this);
    }
  },
  // `URLSearchParams.prototype.keys` method
  keys: function keys() {
    return new URLSearchParamsIterator(this, 'keys');
  },
  // `URLSearchParams.prototype.values` method
  values: function values() {
    return new URLSearchParamsIterator(this, 'values');
  },
  // `URLSearchParams.prototype.entries` method
  entries: function entries() {
    return new URLSearchParamsIterator(this, 'entries');
  }
}, { enumerable: true });

// `URLSearchParams.prototype[@@iterator]` method
defineBuiltIn(URLSearchParamsPrototype, ITERATOR, URLSearchParamsPrototype.entries, { name: 'entries' });

// `URLSearchParams.prototype.toString` method
// https://url.spec.whatwg.org/#urlsearchparams-stringification-behavior
defineBuiltIn(URLSearchParamsPrototype, 'toString', function toString() {
  return getInternalParamsState(this).serialize();
}, { enumerable: true });

// `URLSearchParams.prototype.size` getter
// https://github.com/whatwg/url/pull/734
if (DESCRIPTORS) defineBuiltInAccessor(URLSearchParamsPrototype, 'size', {
  get: function size() {
    return getInternalParamsState(this).entries.length;
  },
  configurable: true,
  enumerable: true
});

setToStringTag(URLSearchParamsConstructor, URL_SEARCH_PARAMS);

$({ global: true, constructor: true, forced: !USE_NATIVE_URL }, {
  URLSearchParams: URLSearchParamsConstructor
});

// Wrap `fetch` and `Request` for correct work with polyfilled `URLSearchParams`
if (!USE_NATIVE_URL && isCallable(Headers)) {
  var headersHas = uncurryThis(HeadersPrototype.has);
  var headersSet = uncurryThis(HeadersPrototype.set);

  var wrapRequestOptions = function (init) {
    if (isObject(init)) {
      var body = init.body;
      var headers;
      if (classof(body) === URL_SEARCH_PARAMS) {
        headers = init.headers ? new Headers(init.headers) : new Headers();
        if (!headersHas(headers, 'content-type')) {
          headersSet(headers, 'content-type', 'application/x-www-form-urlencoded;charset=UTF-8');
        }
        return create(init, {
          body: createPropertyDescriptor(0, $toString(body)),
          headers: createPropertyDescriptor(0, headers)
        });
      }
    } return init;
  };

  if (isCallable(nativeFetch)) {
    $({ global: true, enumerable: true, dontCallGetSet: true, forced: true }, {
      fetch: function fetch(input /* , init */) {
        return nativeFetch(input, arguments.length > 1 ? wrapRequestOptions(arguments[1]) : {});
      }
    });
  }

  if (isCallable(NativeRequest)) {
    var RequestConstructor = function Request(input /* , init */) {
      anInstance(this, RequestPrototype);
      return new NativeRequest(input, arguments.length > 1 ? wrapRequestOptions(arguments[1]) : {});
    };

    RequestPrototype.constructor = RequestConstructor;
    RequestConstructor.prototype = RequestPrototype;

    $({ global: true, constructor: true, dontCallGetSet: true, forced: true }, {
      Request: RequestConstructor
    });
  }
}

module.exports = {
  URLSearchParams: URLSearchParamsConstructor,
  getState: getInternalParamsState
};