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35 lines
1.1 KiB
35 lines
1.1 KiB
3 years ago
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'use strict';
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var addToUnscopables = require('./_add-to-unscopables');
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var step = require('./_iter-step');
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var Iterators = require('./_iterators');
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var toIObject = require('./_to-iobject');
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// 22.1.3.4 Array.prototype.entries()
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// 22.1.3.13 Array.prototype.keys()
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// 22.1.3.29 Array.prototype.values()
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// 22.1.3.30 Array.prototype[@@iterator]()
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module.exports = require('./_iter-define')(Array, 'Array', function (iterated, kind) {
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this._t = toIObject(iterated); // target
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this._i = 0; // next index
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this._k = kind; // kind
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// 22.1.5.2.1 %ArrayIteratorPrototype%.next()
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}, function () {
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var O = this._t;
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var kind = this._k;
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var index = this._i++;
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if (!O || index >= O.length) {
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this._t = undefined;
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return step(1);
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}
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if (kind == 'keys') return step(0, index);
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if (kind == 'values') return step(0, O[index]);
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return step(0, [index, O[index]]);
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}, 'values');
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// argumentsList[@@iterator] is %ArrayProto_values% (9.4.4.6, 9.4.4.7)
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Iterators.Arguments = Iterators.Array;
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addToUnscopables('keys');
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addToUnscopables('values');
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addToUnscopables('entries');
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