dygraphs/dist/tests.js

dygraphs is a fast, flexible open source JavaScript charting library.

(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
require('../../modules/es.aggregate-error');
require('../../modules/es.array.iterator');
require('../../modules/es.object.to-string');
require('../../modules/es.promise');
require('../../modules/es.promise.all-settled');
require('../../modules/es.promise.any');
require('../../modules/es.promise.finally');
require('../../modules/es.string.iterator');
var path = require('../../internals/path');

module.exports = path.Promise;

},{"../../internals/path":93,"../../modules/es.aggregate-error":127,"../../modules/es.array.iterator":128,"../../modules/es.object.to-string":129,"../../modules/es.promise":136,"../../modules/es.promise.all-settled":130,"../../modules/es.promise.any":132,"../../modules/es.promise.finally":135,"../../modules/es.string.iterator":140}],2:[function(require,module,exports){
var isCallable = require('../internals/is-callable');
var tryToString = require('../internals/try-to-string');

var $TypeError = TypeError;

// `Assert: IsCallable(argument) is true`
module.exports = function (argument) {
  if (isCallable(argument)) return argument;
  throw $TypeError(tryToString(argument) + ' is not a function');
};

},{"../internals/is-callable":59,"../internals/try-to-string":119}],3:[function(require,module,exports){
var isConstructor = require('../internals/is-constructor');
var tryToString = require('../internals/try-to-string');

var $TypeError = TypeError;

// `Assert: IsConstructor(argument) is true`
module.exports = function (argument) {
  if (isConstructor(argument)) return argument;
  throw $TypeError(tryToString(argument) + ' is not a constructor');
};

},{"../internals/is-constructor":60,"../internals/try-to-string":119}],4:[function(require,module,exports){
var isCallable = require('../internals/is-callable');

var $String = String;
var $TypeError = TypeError;

module.exports = function (argument) {
  if (typeof argument == 'object' || isCallable(argument)) return argument;
  throw $TypeError("Can't set " + $String(argument) + ' as a prototype');
};

},{"../internals/is-callable":59}],5:[function(require,module,exports){
var wellKnownSymbol = require('../internals/well-known-symbol');
var create = require('../internals/object-create');
var defineProperty = require('../internals/object-define-property').f;

var UNSCOPABLES = wellKnownSymbol('unscopables');
var ArrayPrototype = Array.prototype;

// Array.prototype[@@unscopables]
// https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
if (ArrayPrototype[UNSCOPABLES] == undefined) {
  defineProperty(ArrayPrototype, UNSCOPABLES, {
    configurable: true,
    value: create(null)
  });
}

// add a key to Array.prototype[@@unscopables]
module.exports = function (key) {
  ArrayPrototype[UNSCOPABLES][key] = true;
};

},{"../internals/object-create":78,"../internals/object-define-property":80,"../internals/well-known-symbol":125}],6:[function(require,module,exports){
var isPrototypeOf = require('../internals/object-is-prototype-of');

var $TypeError = TypeError;

module.exports = function (it, Prototype) {
  if (isPrototypeOf(Prototype, it)) return it;
  throw $TypeError('Incorrect invocation');
};

},{"../internals/object-is-prototype-of":85}],7:[function(require,module,exports){
var isObject = require('../internals/is-object');

var $String = String;
var $TypeError = TypeError;

// `Assert: Type(argument) is Object`
module.exports = function (argument) {
  if (isObject(argument)) return argument;
  throw $TypeError($String(argument) + ' is not an object');
};

},{"../internals/is-object":63}],8:[function(require,module,exports){
var toIndexedObject = require('../internals/to-indexed-object');
var toAbsoluteIndex = require('../internals/to-absolute-index');
var lengthOfArrayLike = require('../internals/length-of-array-like');

// `Array.prototype.{ indexOf, includes }` methods implementation
var createMethod = function (IS_INCLUDES) {
  return function ($this, el, fromIndex) {
    var O = toIndexedObject($this);
    var length = lengthOfArrayLike(O);
    var index = toAbsoluteIndex(fromIndex, length);
    var value;
    // Array#includes uses SameValueZero equality algorithm
    // eslint-disable-next-line no-self-compare -- NaN check
    if (IS_INCLUDES && el != el) while (length > index) {
      value = O[index++];
      // eslint-disable-next-line no-self-compare -- NaN check
      if (value != value) return true;
    // Array#indexOf ignores holes, Array#includes - not
    } else for (;length > index; index++) {
      if ((IS_INCLUDES || index in O) && O[index] === el) return IS_INCLUDES || index || 0;
    } return !IS_INCLUDES && -1;
  };
};

module.exports = {
  // `Array.prototype.includes` method
  // https://tc39.es/ecma262/#sec-array.prototype.includes
  includes: createMethod(true),
  // `Array.prototype.indexOf` method
  // https://tc39.es/ecma262/#sec-array.prototype.indexof
  indexOf: createMethod(false)
};

},{"../internals/length-of-array-like":72,"../internals/to-absolute-index":110,"../internals/to-indexed-object":111}],9:[function(require,module,exports){
var uncurryThis = require('../internals/function-uncurry-this');

module.exports = uncurryThis([].slice);

},{"../internals/function-uncurry-this":43}],10:[function(require,module,exports){
var wellKnownSymbol = require('../internals/well-known-symbol');

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

try {
  var called = 0;
  var iteratorWithReturn = {
    next: function () {
      return { done: !!called++ };
    },
    'return': function () {
      SAFE_CLOSING = true;
    }
  };
  iteratorWithReturn[ITERATOR] = function () {
    return this;
  };
  // eslint-disable-next-line es/no-array-from, no-throw-literal -- required for testing
  Array.from(iteratorWithReturn, function () { throw 2; });
} catch (error) { /* empty */ }

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

},{"../internals/well-known-symbol":125}],11:[function(require,module,exports){
var uncurryThis = require('../internals/function-uncurry-this');

var toString = uncurryThis({}.toString);
var stringSlice = uncurryThis(''.slice);

module.exports = function (it) {
  return stringSlice(toString(it), 8, -1);
};

},{"../internals/function-uncurry-this":43}],12:[function(require,module,exports){
var TO_STRING_TAG_SUPPORT = require('../internals/to-string-tag-support');
var isCallable = require('../internals/is-callable');
var classofRaw = require('../internals/classof-raw');
var wellKnownSymbol = require('../internals/well-known-symbol');

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

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

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

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

},{"../internals/classof-raw":11,"../internals/is-callable":59,"../internals/to-string-tag-support":117,"../internals/well-known-symbol":125}],13:[function(require,module,exports){
var hasOwn = require('../internals/has-own-property');
var ownKeys = require('../internals/own-keys');
var getOwnPropertyDescriptorModule = require('../internals/object-get-own-property-descriptor');
var definePropertyModule = require('../internals/object-define-property');

module.exports = function (target, source, exceptions) {
  var keys = ownKeys(source);
  var defineProperty = definePropertyModule.f;
  var getOwnPropertyDescriptor = getOwnPropertyDescriptorModule.f;
  for (var i = 0; i < keys.length; i++) {
    var key = keys[i];
    if (!hasOwn(target, key) && !(exceptions && hasOwn(exceptions, key))) {
      defineProperty(target, key, getOwnPropertyDescriptor(source, key));
    }
  }
};

},{"../internals/has-own-property":49,"../internals/object-define-property":80,"../internals/object-get-own-property-descriptor":81,"../internals/own-keys":92}],14:[function(require,module,exports){
var fails = require('../internals/fails');

module.exports = !fails(function () {
  function F() { /* empty */ }
  F.prototype.constructor = null;
  // eslint-disable-next-line es/no-object-getprototypeof -- required for testing
  return Object.getPrototypeOf(new F()) !== F.prototype;
});

},{"../internals/fails":36}],15:[function(require,module,exports){
// `CreateIterResultObject` abstract operation
// https://tc39.es/ecma262/#sec-createiterresultobject
module.exports = function (value, done) {
  return { value: value, done: done };
};

},{}],16:[function(require,module,exports){
var DESCRIPTORS = require('../internals/descriptors');
var definePropertyModule = require('../internals/object-define-property');
var createPropertyDescriptor = require('../internals/create-property-descriptor');

module.exports = DESCRIPTORS ? function (object, key, value) {
  return definePropertyModule.f(object, key, createPropertyDescriptor(1, value));
} : function (object, key, value) {
  object[key] = value;
  return object;
};

},{"../internals/create-property-descriptor":17,"../internals/descriptors":20,"../internals/object-define-property":80}],17:[function(require,module,exports){
module.exports = function (bitmap, value) {
  return {
    enumerable: !(bitmap & 1),
    configurable: !(bitmap & 2),
    writable: !(bitmap & 4),
    value: value
  };
};

},{}],18:[function(require,module,exports){
var isCallable = require('../internals/is-callable');
var definePropertyModule = require('../internals/object-define-property');
var makeBuiltIn = require('../internals/make-built-in');
var defineGlobalProperty = require('../internals/define-global-property');

module.exports = function (O, key, value, options) {
  if (!options) options = {};
  var simple = options.enumerable;
  var name = options.name !== undefined ? options.name : key;
  if (isCallable(value)) makeBuiltIn(value, name, options);
  if (options.global) {
    if (simple) O[key] = value;
    else defineGlobalProperty(key, value);
  } else {
    try {
      if (!options.unsafe) delete O[key];
      else if (O[key]) simple = true;
    } catch (error) { /* empty */ }
    if (simple) O[key] = value;
    else definePropertyModule.f(O, key, {
      value: value,
      enumerable: false,
      configurable: !options.nonConfigurable,
      writable: !options.nonWritable
    });
  } return O;
};

},{"../internals/define-global-property":19,"../internals/is-callable":59,"../internals/make-built-in":73,"../internals/object-define-property":80}],19:[function(require,module,exports){
var global = require('../internals/global');

// eslint-disable-next-line es/no-object-defineproperty -- safe
var defineProperty = Object.defineProperty;

module.exports = function (key, value) {
  try {
    defineProperty(global, key, { value: value, configurable: true, writable: true });
  } catch (error) {
    global[key] = value;
  } return value;
};

},{"../internals/global":48}],20:[function(require,module,exports){
var fails = require('../internals/fails');

// Detect IE8's incomplete defineProperty implementation
module.exports = !fails(function () {
  // eslint-disable-next-line es/no-object-defineproperty -- required for testing
  return Object.defineProperty({}, 1, { get: function () { return 7; } })[1] != 7;
});

},{"../internals/fails":36}],21:[function(require,module,exports){
var documentAll = typeof document == 'object' && document.all;

// https://tc39.es/ecma262/#sec-IsHTMLDDA-internal-slot
// eslint-disable-next-line unicorn/no-typeof-undefined -- required for testing
var IS_HTMLDDA = typeof documentAll == 'undefined' && documentAll !== undefined;

module.exports = {
  all: documentAll,
  IS_HTMLDDA: IS_HTMLDDA
};

},{}],22:[function(require,module,exports){
var global = require('../internals/global');
var isObject = require('../internals/is-object');

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

module.exports = function (it) {
  return EXISTS ? document.createElement(it) : {};
};

},{"../internals/global":48,"../internals/is-object":63}],23:[function(require,module,exports){
var IS_DENO = require('../internals/engine-is-deno');
var IS_NODE = require('../internals/engine-is-node');

module.exports = !IS_DENO && !IS_NODE
  && typeof window == 'object'
  && typeof document == 'object';

},{"../internals/engine-is-deno":24,"../internals/engine-is-node":27}],24:[function(require,module,exports){
/* global Deno -- Deno case */
module.exports = typeof Deno == 'object' && Deno && typeof Deno.version == 'object';

},{}],25:[function(require,module,exports){
var userAgent = require('../internals/engine-user-agent');

module.exports = /ipad|iphone|ipod/i.test(userAgent) && typeof Pebble != 'undefined';

},{"../internals/engine-user-agent":29}],26:[function(require,module,exports){
var userAgent = require('../internals/engine-user-agent');

module.exports = /(?:ipad|iphone|ipod).*applewebkit/i.test(userAgent);

},{"../internals/engine-user-agent":29}],27:[function(require,module,exports){
(function (process){(function (){
var classof = require('../internals/classof-raw');

module.exports = typeof process != 'undefined' && classof(process) == 'process';

}).call(this)}).call(this,require('_process'))

},{"../internals/classof-raw":11,"_process":141}],28:[function(require,module,exports){
var userAgent = require('../internals/engine-user-agent');

module.exports = /web0s(?!.*chrome)/i.test(userAgent);

},{"../internals/engine-user-agent":29}],29:[function(require,module,exports){
module.exports = typeof navigator != 'undefined' && String(navigator.userAgent) || '';

},{}],30:[function(require,module,exports){
var global = require('../internals/global');
var userAgent = require('../internals/engine-user-agent');

var process = global.process;
var Deno = global.Deno;
var versions = process && process.versions || Deno && Deno.version;
var v8 = versions && versions.v8;
var match, version;

if (v8) {
  match = v8.split('.');
  // in old Chrome, versions of V8 isn't V8 = Chrome / 10
  // but their correct versions are not interesting for us
  version = match[0] > 0 && match[0] < 4 ? 1 : +(match[0] + match[1]);
}

// BrowserFS NodeJS `process` polyfill incorrectly set `.v8` to `0.0`
// so check `userAgent` even if `.v8` exists, but 0
if (!version && userAgent) {
  match = userAgent.match(/Edge\/(\d+)/);
  if (!match || match[1] >= 74) {
    match = userAgent.match(/Chrome\/(\d+)/);
    if (match) version = +match[1];
  }
}

module.exports = version;

},{"../internals/engine-user-agent":29,"../internals/global":48}],31:[function(require,module,exports){
// IE8- don't enum bug keys
module.exports = [
  'constructor',
  'hasOwnProperty',
  'isPrototypeOf',
  'propertyIsEnumerable',
  'toLocaleString',
  'toString',
  'valueOf'
];

},{}],32:[function(require,module,exports){
var uncurryThis = require('../internals/function-uncurry-this');

var $Error = Error;
var replace = uncurryThis(''.replace);

var TEST = (function (arg) { return String($Error(arg).stack); })('zxcasd');
var V8_OR_CHAKRA_STACK_ENTRY = /\n\s*at [^:]*:[^\n]*/;
var IS_V8_OR_CHAKRA_STACK = V8_OR_CHAKRA_STACK_ENTRY.test(TEST);

module.exports = function (stack, dropEntries) {
  if (IS_V8_OR_CHAKRA_STACK && typeof stack == 'string' && !$Error.prepareStackTrace) {
    while (dropEntries--) stack = replace(stack, V8_OR_CHAKRA_STACK_ENTRY, '');
  } return stack;
};

},{"../internals/function-uncurry-this":43}],33:[function(require,module,exports){
var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
var clearErrorStack = require('../internals/error-stack-clear');
var ERROR_STACK_INSTALLABLE = require('../internals/error-stack-installable');

// non-standard V8
var captureStackTrace = Error.captureStackTrace;

module.exports = function (error, C, stack, dropEntries) {
  if (ERROR_STACK_INSTALLABLE) {
    if (captureStackTrace) captureStackTrace(error, C);
    else createNonEnumerableProperty(error, 'stack', clearErrorStack(stack, dropEntries));
  }
};

},{"../internals/create-non-enumerable-property":16,"../internals/error-stack-clear":32,"../internals/error-stack-installable":34}],34:[function(require,module,exports){
var fails = require('../internals/fails');
var createPropertyDescriptor = require('../internals/create-property-descriptor');

module.exports = !fails(function () {
  var error = Error('a');
  if (!('stack' in error)) return true;
  // eslint-disable-next-line es/no-object-defineproperty -- safe
  Object.defineProperty(error, 'stack', createPropertyDescriptor(1, 7));
  return error.stack !== 7;
});

},{"../internals/create-property-descriptor":17,"../internals/fails":36}],35:[function(require,module,exports){
var global = require('../internals/global');
var getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;
var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
var defineBuiltIn = require('../internals/define-built-in');
var defineGlobalProperty = require('../internals/define-global-property');
var copyConstructorProperties = require('../internals/copy-constructor-properties');
var isForced = require('../internals/is-forced');

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

},{"../internals/copy-constructor-properties":13,"../internals/create-non-enumerable-property":16,"../internals/define-built-in":18,"../internals/define-global-property":19,"../internals/global":48,"../internals/is-forced":61,"../internals/object-get-own-property-descriptor":81}],36:[function(require,module,exports){
module.exports = function (exec) {
  try {
    return !!exec();
  } catch (error) {
    return true;
  }
};

},{}],37:[function(require,module,exports){
var NATIVE_BIND = require('../internals/function-bind-native');

var FunctionPrototype = Function.prototype;
var apply = FunctionPrototype.apply;
var call = FunctionPrototype.call;

// eslint-disable-next-line es/no-reflect -- safe
module.exports = typeof Reflect == 'object' && Reflect.apply || (NATIVE_BIND ? call.bind(apply) : function () {
  return call.apply(apply, arguments);
});

},{"../internals/function-bind-native":39}],38:[function(require,module,exports){
var uncurryThis = require('../internals/function-uncurry-this-clause');
var aCallable = require('../internals/a-callable');
var NATIVE_BIND = require('../internals/function-bind-native');

var bind = uncurryThis(uncurryThis.bind);

// optional / simple context binding
module.exports = function (fn, that) {
  aCallable(fn);
  return that === undefined ? fn : NATIVE_BIND ? bind(fn, that) : function (/* ...args */) {
    return fn.apply(that, arguments);
  };
};

},{"../internals/a-callable":2,"../internals/function-bind-native":39,"../internals/function-uncurry-this-clause":42}],39:[function(require,module,exports){
var fails = require('../internals/fails');

module.exports = !fails(function () {
  // eslint-disable-next-line es/no-function-prototype-bind -- safe
  var test = (function () { /* empty */ }).bind();
  // eslint-disable-next-line no-prototype-builtins -- safe
  return typeof test != 'function' || test.hasOwnProperty('prototype');
});

},{"../internals/fails":36}],40:[function(require,module,exports){
var NATIVE_BIND = require('../internals/function-bind-native');

var call = Function.prototype.call;

module.exports = NATIVE_BIND ? call.bind(call) : function () {
  return call.apply(call, arguments);
};

},{"../internals/function-bind-native":39}],41:[function(require,module,exports){
var DESCRIPTORS = require('../internals/descriptors');
var hasOwn = require('../internals/has-own-property');

var FunctionPrototype = Function.prototype;
// eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
var getDescriptor = DESCRIPTORS && Object.getOwnPropertyDescriptor;

var EXISTS = hasOwn(FunctionPrototype, 'name');
// additional protection from minified / mangled / dropped function names
var PROPER = EXISTS && (function something() { /* empty */ }).name === 'something';
var CONFIGURABLE = EXISTS && (!DESCRIPTORS || (DESCRIPTORS && getDescriptor(FunctionPrototype, 'name').configurable));

module.exports = {
  EXISTS: EXISTS,
  PROPER: PROPER,
  CONFIGURABLE: CONFIGURABLE
};

},{"../internals/descriptors":20,"../internals/has-own-property":49}],42:[function(require,module,exports){
var classofRaw = require('../internals/classof-raw');
var uncurryThis = require('../internals/function-uncurry-this');

module.exports = function (fn) {
  // Nashorn bug:
  //   https://github.com/zloirock/core-js/issues/1128
  //   https://github.com/zloirock/core-js/issues/1130
  if (classofRaw(fn) === 'Function') return uncurryThis(fn);
};

},{"../internals/classof-raw":11,"../internals/function-uncurry-this":43}],43:[function(require,module,exports){
var NATIVE_BIND = require('../internals/function-bind-native');

var FunctionPrototype = Function.prototype;
var call = FunctionPrototype.call;
var uncurryThisWithBind = NATIVE_BIND && FunctionPrototype.bind.bind(call, call);

module.exports = NATIVE_BIND ? uncurryThisWithBind : function (fn) {
  return function () {
    return call.apply(fn, arguments);
  };
};

},{"../internals/function-bind-native":39}],44:[function(require,module,exports){
var global = require('../internals/global');
var isCallable = require('../internals/is-callable');

var aFunction = function (argument) {
  return isCallable(argument) ? argument : undefined;
};

module.exports = function (namespace, method) {
  return arguments.length < 2 ? aFunction(global[namespace]) : global[namespace] && global[namespace][method];
};

},{"../internals/global":48,"../internals/is-callable":59}],45:[function(require,module,exports){
var classof = require('../internals/classof');
var getMethod = require('../internals/get-method');
var isNullOrUndefined = require('../internals/is-null-or-undefined');
var Iterators = require('../internals/iterators');
var wellKnownSymbol = require('../internals/well-known-symbol');

var ITERATOR = wellKnownSymbol('iterator');

module.exports = function (it) {
  if (!isNullOrUndefined(it)) return getMethod(it, ITERATOR)
    || getMethod(it, '@@iterator')
    || Iterators[classof(it)];
};

},{"../internals/classof":12,"../internals/get-method":47,"../internals/is-null-or-undefined":62,"../internals/iterators":71,"../internals/well-known-symbol":125}],46:[function(require,module,exports){
var call = require('../internals/function-call');
var aCallable = require('../internals/a-callable');
var anObject = require('../internals/an-object');
var tryToString = require('../internals/try-to-string');
var getIteratorMethod = require('../internals/get-iterator-method');

var $TypeError = TypeError;

module.exports = function (argument, usingIterator) {
  var iteratorMethod = arguments.length < 2 ? getIteratorMethod(argument) : usingIterator;
  if (aCallable(iteratorMethod)) return anObject(call(iteratorMethod, argument));
  throw $TypeError(tryToString(argument) + ' is not iterable');
};

},{"../internals/a-callable":2,"../internals/an-object":7,"../internals/function-call":40,"../internals/get-iterator-method":45,"../internals/try-to-string":119}],47:[function(require,module,exports){
var aCallable = require('../internals/a-callable');
var isNullOrUndefined = require('../internals/is-null-or-undefined');

// `GetMethod` abstract operation
// https://tc39.es/ecma262/#sec-getmethod
module.exports = function (V, P) {
  var func = V[P];
  return isNullOrUndefined(func) ? undefined : aCallable(func);
};

},{"../internals/a-callable":2,"../internals/is-null-or-undefined":62}],48:[function(require,module,exports){
(function (global){(function (){
var check = function (it) {
  return it && it.Math == Math && it;
};

// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
module.exports =
  // eslint-disable-next-line es/no-global-this -- safe
  check(typeof globalThis == 'object' && globalThis) ||
  check(typeof window == 'object' && window) ||
  // eslint-disable-next-line no-restricted-globals -- safe
  check(typeof self == 'object' && self) ||
  check(typeof global == 'object' && global) ||
  // eslint-disable-next-line no-new-func -- fallback
  (function () { return this; })() || Function('return this')();

}).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})

},{}],49:[function(require,module,exports){
var uncurryThis = require('../internals/function-uncurry-this');
var toObject = require('../internals/to-object');

var hasOwnProperty = uncurryThis({}.hasOwnProperty);

// `HasOwnProperty` abstract operation
// https://tc39.es/ecma262/#sec-hasownproperty
// eslint-disable-next-line es/no-object-hasown -- safe
module.exports = Object.hasOwn || function hasOwn(it, key) {
  return hasOwnProperty(toObject(it), key);
};

},{"../internals/function-uncurry-this":43,"../internals/to-object":114}],50:[function(require,module,exports){
module.exports = {};

},{}],51:[function(require,module,exports){
module.exports = function (a, b) {
  try {
    // eslint-disable-next-line no-console -- safe
    arguments.length == 1 ? console.error(a) : console.error(a, b);
  } catch (error) { /* empty */ }
};

},{}],52:[function(require,module,exports){
var getBuiltIn = require('../internals/get-built-in');

module.exports = getBuiltIn('document', 'documentElement');

},{"../internals/get-built-in":44}],53:[function(require,module,exports){
var DESCRIPTORS = require('../internals/descriptors');
var fails = require('../internals/fails');
var createElement = require('../internals/document-create-element');

// Thanks to IE8 for its funny defineProperty
module.exports = !DESCRIPTORS && !fails(function () {
  // eslint-disable-next-line es/no-object-defineproperty -- required for testing
  return Object.defineProperty(createElement('div'), 'a', {
    get: function () { return 7; }
  }).a != 7;
});

},{"../internals/descriptors":20,"../internals/document-create-element":22,"../internals/fails":36}],54:[function(require,module,exports){
var uncurryThis = require('../internals/function-uncurry-this');
var fails = require('../internals/fails');
var classof = require('../internals/classof-raw');

var $Object = Object;
var split = uncurryThis(''.split);

// fallback for non-array-like ES3 and non-enumerable old V8 strings
module.exports = fails(function () {
  // throws an error in rhino, see https://github.com/mozilla/rhino/issues/346
  // eslint-disable-next-line no-prototype-builtins -- safe
  return !$Object('z').propertyIsEnumerable(0);
}) ? function (it) {
  return classof(it) == 'String' ? split(it, '') : $Object(it);
} : $Object;

},{"../internals/classof-raw":11,"../internals/fails":36,"../internals/function-uncurry-this":43}],55:[function(require,module,exports){
var uncurryThis = require('../internals/function-uncurry-this');
var isCallable = require('../internals/is-callable');
var store = require('../internals/shared-store');

var functionToString = uncurryThis(Function.toString);

// this helper broken in `core-js@3.4.1-3.4.4`, so we can't use `shared` helper
if (!isCallable(store.inspectSource)) {
  store.inspectSource = function (it) {
    return functionToString(it);
  };
}

module.exports = store.inspectSource;

},{"../internals/function-uncurry-this":43,"../internals/is-callable":59,"../internals/shared-store":104}],56:[function(require,module,exports){
var isObject = require('../internals/is-object');
var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');

// `InstallErrorCause` abstract operation
// https://tc39.es/proposal-error-cause/#sec-errorobjects-install-error-cause
module.exports = function (O, options) {
  if (isObject(options) && 'cause' in options) {
    createNonEnumerableProperty(O, 'cause', options.cause);
  }
};

},{"../internals/create-non-enumerable-property":16,"../internals/is-object":63}],57:[function(require,module,exports){
var NATIVE_WEAK_MAP = require('../internals/weak-map-basic-detection');
var global = require('../internals/global');
var isObject = require('../internals/is-object');
var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
var hasOwn = require('../internals/has-own-property');
var shared = require('../internals/shared-store');
var sharedKey = require('../internals/shared-key');
var hiddenKeys = require('../internals/hidden-keys');

var OBJECT_ALREADY_INITIALIZED = 'Object already initialized';
var TypeError = global.TypeError;
var WeakMap = global.WeakMap;
var set, get, has;

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

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

if (NATIVE_WEAK_MAP || shared.state) {
  var store = shared.state || (shared.state = new WeakMap());
  /* eslint-disable no-self-assign -- prototype methods protection */
  store.get = store.get;
  store.has = store.has;
  store.set = store.set;
  /* eslint-enable no-self-assign -- prototype methods protection */
  set = function (it, metadata) {
    if (store.has(it)) throw TypeError(OBJECT_ALREADY_INITIALIZED);
    metadata.facade = it;
    store.set(it, metadata);
    return metadata;
  };
  get = function (it) {
    return store.get(it) || {};
  };
  has = function (it) {
    return store.has(it);
  };
} else {
  var STATE = sharedKey('state');
  hiddenKeys[STATE] = true;
  set = function (it, metadata) {
    if (hasOwn(it, STATE)) throw TypeError(OBJECT_ALREADY_INITIALIZED);
    metadata.facade = it;
    createNonEnumerableProperty(it, STATE, metadata);
    return metadata;
  };
  get = function (it) {
    return hasOwn(it, STATE) ? it[STATE] : {};
  };
  has = function (it) {
    return hasOwn(it, STATE);
  };
}

module.exports = {
  set: set,
  get: get,
  has: has,
  enforce: enforce,
  getterFor: getterFor
};

},{"../internals/create-non-enumerable-property":16,"../internals/global":48,"../internals/has-own-property":49,"../internals/hidden-keys":50,"../internals/is-object":63,"../internals/shared-key":103,"../internals/shared-store":104,"../internals/weak-map-basic-detection":124}],58:[function(require,module,exports){
var wellKnownSymbol = require('../internals/well-known-symbol');
var Iterators = require('../internals/iterators');

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

// check on default Array iterator
module.exports = function (it) {
  return it !== undefined && (Iterators.Array === it || ArrayPrototype[ITERATOR] === it);
};

},{"../internals/iterators":71,"../internals/well-known-symbol":125}],59:[function(require,module,exports){
var $documentAll = require('../internals/document-all');

var documentAll = $documentAll.all;

// `IsCallable` abstract operation
// https://tc39.es/ecma262/#sec-iscallable
module.exports = $documentAll.IS_HTMLDDA ? function (argument) {
  return typeof argument == 'function' || argument === documentAll;
} : function (argument) {
  return typeof argument == 'function';
};

},{"../internals/document-all":21}],60:[function(require,module,exports){
var uncurryThis = require('../internals/function-uncurry-this');
var fails = require('../internals/fails');
var isCallable = require('../internals/is-callable');
var classof = require('../internals/classof');
var getBuiltIn = require('../internals/get-built-in');
var inspectSource = require('../internals/inspect-source');

var noop = function () { /* empty */ };
var empty = [];
var construct = getBuiltIn('Reflect', 'construct');
var constructorRegExp = /^\s*(?:class|function)\b/;
var exec = uncurryThis(constructorRegExp.exec);
var INCORRECT_TO_STRING = !constructorRegExp.exec(noop);

var isConstructorModern = function isConstructor(argument) {
  if (!isCallable(argument)) return false;
  try {
    construct(noop, empty, argument);
    return true;
  } catch (error) {
    return false;
  }
};

var isConstructorLegacy = function isConstructor(argument) {
  if (!isCallable(argument)) return false;
  switch (classof(argument)) {
    case 'AsyncFunction':
    case 'GeneratorFunction':
    case 'AsyncGeneratorFunction': return false;
  }
  try {
    // we can't check .prototype since constructors produced by .bind haven't it
    // `Function#toString` throws on some built-it function in some legacy engines
    // (for example, `DOMQuad` and similar in FF41-)
    return INCORRECT_TO_STRING || !!exec(constructorRegExp, inspectSource(argument));
  } catch (error) {
    return true;
  }
};

isConstructorLegacy.sham = true;

// `IsConstructor` abstract operation
// https://tc39.es/ecma262/#sec-isconstructor
module.exports = !construct || fails(function () {
  var called;
  return isConstructorModern(isConstructorModern.call)
    || !isConstructorModern(Object)
    || !isConstructorModern(function () { called = true; })
    || called;
}) ? isConstructorLegacy : isConstructorModern;

},{"../internals/classof":12,"../internals/fails":36,"../internals/function-uncurry-this":43,"../internals/get-built-in":44,"../internals/inspect-source":55,"../internals/is-callable":59}],61:[function(require,module,exports){
var fails = require('../internals/fails');
var isCallable = require('../internals/is-callable');

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

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

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

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

module.exports = isForced;

},{"../internals/fails":36,"../internals/is-callable":59}],62:[function(require,module,exports){
// we can't use just `it == null` since of `document.all` special case
// https://tc39.es/ecma262/#sec-IsHTMLDDA-internal-slot-aec
module.exports = function (it) {
  return it === null || it === undefined;
};

},{}],63:[function(require,module,exports){
var isCallable = require('../internals/is-callable');
var $documentAll = require('../internals/document-all');

var documentAll = $documentAll.all;

module.exports = $documentAll.IS_HTMLDDA ? function (it) {
  return typeof it == 'object' ? it !== null : isCallable(it) || it === documentAll;
} : function (it) {
  return typeof it == 'object' ? it !== null : isCallable(it);
};

},{"../internals/document-all":21,"../internals/is-callable":59}],64:[function(require,module,exports){
module.exports = false;

},{}],65:[function(require,module,exports){
var getBuiltIn = require('../internals/get-built-in');
var isCallable = require('../internals/is-callable');
var isPrototypeOf = require('../internals/object-is-prototype-of');
var USE_SYMBOL_AS_UID = require('../internals/use-symbol-as-uid');

var $Object = Object;

module.exports = USE_SYMBOL_AS_UID ? function (it) {
  return typeof it == 'symbol';
} : function (it) {
  var $Symbol = getBuiltIn('Symbol');
  return isCallable($Symbol) && isPrototypeOf($Symbol.prototype, $Object(it));
};

},{"../internals/get-built-in":44,"../internals/is-callable":59,"../internals/object-is-prototype-of":85,"../internals/use-symbol-as-uid":121}],66:[function(require,module,exports){
var bind = require('../internals/function-bind-context');
var call = require('../internals/function-call');
var anObject = require('../internals/an-object');
var tryToString = require('../internals/try-to-string');
var isArrayIteratorMethod = require('../internals/is-array-iterator-method');
var lengthOfArrayLike = require('../internals/length-of-array-like');
var isPrototypeOf = require('../internals/object-is-prototype-of');
var getIterator = require('../internals/get-iterator');
var getIteratorMethod = require('../internals/get-iterator-method');
var iteratorClose = require('../internals/iterator-close');

var $TypeError = TypeError;

var Result = function (stopped, result) {
  this.stopped = stopped;
  this.result = result;
};

var ResultPrototype = Result.prototype;

module.exports = function (iterable, unboundFunction, options) {
  var that = options && options.that;
  var AS_ENTRIES = !!(options && options.AS_ENTRIES);
  var IS_RECORD = !!(options && options.IS_RECORD);
  var IS_ITERATOR = !!(options && options.IS_ITERATOR);
  var INTERRUPTED = !!(options && options.INTERRUPTED);
  var fn = bind(unboundFunction, that);
  var iterator, iterFn, index, length, result, next, step;

  var stop = function (condition) {
    if (iterator) iteratorClose(iterator, 'normal', condition);
    return new Result(true, condition);
  };

  var callFn = function (value) {
    if (AS_ENTRIES) {
      anObject(value);
      return INTERRUPTED ? fn(value[0], value[1], stop) : fn(value[0], value[1]);
    } return INTERRUPTED ? fn(value, stop) : fn(value);
  };

  if (IS_RECORD) {
    iterator = iterable.iterator;
  } else if (IS_ITERATOR) {
    iterator = iterable;
  } else {
    iterFn = getIteratorMethod(iterable);
    if (!iterFn) throw $TypeError(tryToString(iterable) + ' is not iterable');
    // optimisation for array iterators
    if (isArrayIteratorMethod(iterFn)) {
      for (index = 0, length = lengthOfArrayLike(iterable); length > index; index++) {
        result = callFn(iterable[index]);
        if (result && isPrototypeOf(ResultPrototype, result)) return result;
      } return new Result(false);
    }
    iterator = getIterator(iterable, iterFn);
  }

  next = IS_RECORD ? iterable.next : iterator.next;
  while (!(step = call(next, iterator)).done) {
    try {
      result = callFn(step.value);
    } catch (error) {
      iteratorClose(iterator, 'throw', error);
    }
    if (typeof result == 'object' && result && isPrototypeOf(ResultPrototype, result)) return result;
  } return new Result(false);
};

},{"../internals/an-object":7,"../internals/function-bind-context":38,"../internals/function-call":40,"../internals/get-iterator":46,"../internals/get-iterator-method":45,"../internals/is-array-iterator-method":58,"../internals/iterator-close":67,"../internals/length-of-array-like":72,"../internals/object-is-prototype-of":85,"../internals/try-to-string":119}],67:[function(require,module,exports){
var call = require('../internals/function-call');
var anObject = require('../internals/an-object');
var getMethod = require('../internals/get-method');

module.exports = function (iterator, kind, value) {
  var innerResult, innerError;
  anObject(iterator);
  try {
    innerResult = getMethod(iterator, 'return');
    if (!innerResult) {
      if (kind === 'throw') throw value;
      return value;
    }
    innerResult = call(innerResult, iterator);
  } catch (error) {
    innerError = true;
    innerResult = error;
  }
  if (kind === 'throw') throw value;
  if (innerError) throw innerResult;
  anObject(innerResult);
  return value;
};

},{"../internals/an-object":7,"../internals/function-call":40,"../internals/get-method":47}],68:[function(require,module,exports){
'use strict';
var IteratorPrototype = require('../internals/iterators-core').IteratorPrototype;
var create = require('../internals/object-create');
var createPropertyDescriptor = require('../internals/create-property-descriptor');
var setToStringTag = require('../internals/set-to-string-tag');
var Iterators = require('../internals/iterators');

var returnThis = function () { return this; };

module.exports = function (IteratorConstructor, NAME, next, ENUMERABLE_NEXT) {
  var TO_STRING_TAG = NAME + ' Iterator';
  IteratorConstructor.prototype = create(IteratorPrototype, { next: createPropertyDescriptor(+!ENUMERABLE_NEXT, next) });
  setToStringTag(IteratorConstructor, TO_STRING_TAG, false, true);
  Iterators[TO_STRING_TAG] = returnThis;
  return IteratorConstructor;
};

},{"../internals/create-property-descriptor":17,"../internals/iterators":71,"../internals/iterators-core":70,"../internals/object-create":78,"../internals/set-to-string-tag":102}],69:[function(require,module,exports){
'use strict';
var $ = require('../internals/export');
var call = require('../internals/function-call');
var IS_PURE = require('../internals/is-pure');
var FunctionName = require('../internals/function-name');
var isCallable = require('../internals/is-callable');
var createIteratorConstructor = require('../internals/iterator-create-constructor');
var getPrototypeOf = require('../internals/object-get-prototype-of');
var setPrototypeOf = require('../internals/object-set-prototype-of');
var setToStringTag = require('../internals/set-to-string-tag');
var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
var defineBuiltIn = require('../internals/define-built-in');
var wellKnownSymbol = require('../internals/well-known-symbol');
var Iterators = require('../internals/iterators');
var IteratorsCore = require('../internals/iterators-core');

var PROPER_FUNCTION_NAME = FunctionName.PROPER;
var CONFIGURABLE_FUNCTION_NAME = FunctionName.CONFIGURABLE;
var IteratorPrototype = IteratorsCore.IteratorPrototype;
var BUGGY_SAFARI_ITERATORS = IteratorsCore.BUGGY_SAFARI_ITERATORS;
var ITERATOR = wellKnownSymbol('iterator');
var KEYS = 'keys';
var VALUES = 'values';
var ENTRIES = 'entries';

var returnThis = function () { return this; };

module.exports = function (Iterable, NAME, IteratorConstructor, next, DEFAULT, IS_SET, FORCED) {
  createIteratorConstructor(IteratorConstructor, NAME, next);

  var getIterationMethod = function (KIND) {
    if (KIND === DEFAULT && defaultIterator) return defaultIterator;
    if (!BUGGY_SAFARI_ITERATORS && KIND in IterablePrototype) return IterablePrototype[KIND];
    switch (KIND) {
      case KEYS: return function keys() { return new IteratorConstructor(this, KIND); };
      case VALUES: return function values() { return new IteratorConstructor(this, KIND); };
      case ENTRIES: return function entries() { return new IteratorConstructor(this, KIND); };
    } return function () { return new IteratorConstructor(this); };
  };

  var TO_STRING_TAG = NAME + ' Iterator';
  var INCORRECT_VALUES_NAME = false;
  var IterablePrototype = Iterable.prototype;
  var nativeIterator = IterablePrototype[ITERATOR]
    || IterablePrototype['@@iterator']
    || DEFAULT && IterablePrototype[DEFAULT];
  var defaultIterator = !BUGGY_SAFARI_ITERATORS && nativeIterator || getIterationMethod(DEFAULT);
  var anyNativeIterator = NAME == 'Array' ? IterablePrototype.entries || nativeIterator : nativeIterator;
  var CurrentIteratorPrototype, methods, KEY;

  // fix native
  if (anyNativeIterator) {
    CurrentIteratorPrototype = getPrototypeOf(anyNativeIterator.call(new Iterable()));
    if (CurrentIteratorPrototype !== Object.prototype && CurrentIteratorPrototype.next) {
      if (!IS_PURE && getPrototypeOf(CurrentIteratorPrototype) !== IteratorPrototype) {
        if (setPrototypeOf) {
          setPrototypeOf(CurrentIteratorPrototype, IteratorPrototype);
        } else if (!isCallable(CurrentIteratorPrototype[ITERATOR])) {
          defineBuiltIn(CurrentIteratorPrototype, ITERATOR, returnThis);
        }
      }
      // Set @@toStringTag to native iterators
      setToStringTag(CurrentIteratorPrototype, TO_STRING_TAG, true, true);
      if (IS_PURE) Iterators[TO_STRING_TAG] = returnThis;
    }
  }

  // fix Array.prototype.{ values, @@iterator }.name in V8 / FF
  if (PROPER_FUNCTION_NAME && DEFAULT == VALUES && nativeIterator && nativeIterator.name !== VALUES) {
    if (!IS_PURE && CONFIGURABLE_FUNCTION_NAME) {
      createNonEnumerableProperty(IterablePrototype, 'name', VALUES);
    } else {
      INCORRECT_VALUES_NAME = true;
      defaultIterator = function values() { return call(nativeIterator, this); };
    }
  }

  // export additional methods
  if (DEFAULT) {
    methods = {
      values: getIterationMethod(VALUES),
      keys: IS_SET ? defaultIterator : getIterationMethod(KEYS),
      entries: getIterationMethod(ENTRIES)
    };
    if (FORCED) for (KEY in methods) {
      if (BUGGY_SAFARI_ITERATORS || INCORRECT_VALUES_NAME || !(KEY in IterablePrototype)) {
        defineBuiltIn(IterablePrototype, KEY, methods[KEY]);
      }
    } else $({ target: NAME, proto: true, forced: BUGGY_SAFARI_ITERATORS || INCORRECT_VALUES_NAME }, methods);
  }

  // define iterator
  if ((!IS_PURE || FORCED) && IterablePrototype[ITERATOR] !== defaultIterator) {
    defineBuiltIn(IterablePrototype, ITERATOR, defaultIterator, { name: DEFAULT });
  }
  Iterators[NAME] = defaultIterator;

  return methods;
};

},{"../internals/create-non-enumerable-property":16,"../internals/define-built-in":18,"../internals/export":35,"../internals/function-call":40,"../internals/function-name":41,"../internals/is-callable":59,"../internals/is-pure":64,"../internals/iterator-create-constructor":68,"../internals/iterators":71,"../internals/iterators-core":70,"../internals/object-get-prototype-of":84,"../internals/object-set-prototype-of":89,"../internals/set-to-string-tag":102,"../internals/well-known-symbol":125}],70:[function(require,module,exports){
'use strict';
var fails = require('../internals/fails');
var isCallable = require('../internals/is-callable');
var isObject = require('../internals/is-object');
var create = require('../internals/object-create');
var getPrototypeOf = require('../internals/object-get-prototype-of');
var defineBuiltIn = require('../internals/define-built-in');
var wellKnownSymbol = require('../internals/well-known-symbol');
var IS_PURE = require('../internals/is-pure');

var ITERATOR = wellKnownSymbol('iterator');
var BUGGY_SAFARI_ITERATORS = false;

// `%IteratorPrototype%` object
// https://tc39.es/ecma262/#sec-%iteratorprototype%-object
var IteratorPrototype, PrototypeOfArrayIteratorPrototype, arrayIterator;

/* eslint-disable es/no-array-prototype-keys -- safe */
if ([].keys) {
  arrayIterator = [].keys();
  // Safari 8 has buggy iterators w/o `next`
  if (!('next' in arrayIterator)) BUGGY_SAFARI_ITERATORS = true;
  else {
    PrototypeOfArrayIteratorPrototype = getPrototypeOf(getPrototypeOf(arrayIterator));
    if (PrototypeOfArrayIteratorPrototype !== Object.prototype) IteratorPrototype = PrototypeOfArrayIteratorPrototype;
  }
}

var NEW_ITERATOR_PROTOTYPE = !isObject(IteratorPrototype) || fails(function () {
  var test = {};
  // FF44- legacy iterators case