diff options
Diffstat (limited to 'node_modules/core-js/internals/define-iterator.js')
| -rw-r--r-- | node_modules/core-js/internals/define-iterator.js | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/node_modules/core-js/internals/define-iterator.js b/node_modules/core-js/internals/define-iterator.js deleted file mode 100644 index 7f829bf..0000000 --- a/node_modules/core-js/internals/define-iterator.js +++ /dev/null @@ -1,90 +0,0 @@ -'use strict'; -var $ = require('../internals/export'); -var createIteratorConstructor = require('../internals/create-iterator-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 redefine = require('../internals/redefine'); -var wellKnownSymbol = require('../internals/well-known-symbol'); -var IS_PURE = require('../internals/is-pure'); -var Iterators = require('../internals/iterators'); -var IteratorsCore = require('../internals/iterators-core'); - -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 (IteratorPrototype !== Object.prototype && CurrentIteratorPrototype.next) { - if (!IS_PURE && getPrototypeOf(CurrentIteratorPrototype) !== IteratorPrototype) { - if (setPrototypeOf) { - setPrototypeOf(CurrentIteratorPrototype, IteratorPrototype); - } else if (typeof CurrentIteratorPrototype[ITERATOR] != 'function') { - createNonEnumerableProperty(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#{values, @@iterator}.name in V8 / FF - if (DEFAULT == VALUES && nativeIterator && nativeIterator.name !== VALUES) { - INCORRECT_VALUES_NAME = true; - defaultIterator = function values() { return nativeIterator.call(this); }; - } - - // define iterator - if ((!IS_PURE || FORCED) && IterablePrototype[ITERATOR] !== defaultIterator) { - createNonEnumerableProperty(IterablePrototype, ITERATOR, defaultIterator); - } - Iterators[NAME] = defaultIterator; - - // 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)) { - redefine(IterablePrototype, KEY, methods[KEY]); - } - } else $({ target: NAME, proto: true, forced: BUGGY_SAFARI_ITERATORS || INCORRECT_VALUES_NAME }, methods); - } - - return methods; -}; |
