Sha256: a5afd926eb89b53d7ed3b7eee063dd566613e5572fe401dac301f1bd8f34e6f4
Contents?: true
Size: 1.32 KB
Versions: 15
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Stored size: 1.32 KB
Contents
'use strict';
var getPrototypeOf = require('../internals/object-get-prototype-of');
var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
var has = require('../internals/has');
var wellKnownSymbol = require('../internals/well-known-symbol');
var IS_PURE = require('../internals/is-pure');
var ITERATOR = wellKnownSymbol('iterator');
var BUGGY_SAFARI_ITERATORS = false;
var returnThis = function () { return this; };
// `%IteratorPrototype%` object
// https://tc39.github.io/ecma262/#sec-%iteratorprototype%-object
var IteratorPrototype, PrototypeOfArrayIteratorPrototype, arrayIterator;
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;
}
}
if (IteratorPrototype == undefined) IteratorPrototype = {};
// 25.1.2.1.1 %IteratorPrototype%[@@iterator]()
if (!IS_PURE && !has(IteratorPrototype, ITERATOR)) {
createNonEnumerableProperty(IteratorPrototype, ITERATOR, returnThis);
}
module.exports = {
IteratorPrototype: IteratorPrototype,
BUGGY_SAFARI_ITERATORS: BUGGY_SAFARI_ITERATORS
};
Version data entries
15 entries across 15 versions & 5 rubygems