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33 lines
1.2 KiB
33 lines
1.2 KiB
4 years ago
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"use strict";
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var setPrototypeOf = require("es5-ext/object/set-prototype-of")
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, contains = require("es5-ext/string/#/contains")
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, d = require("d")
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, Symbol = require("es6-symbol")
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, Iterator = require("./");
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var defineProperty = Object.defineProperty, ArrayIterator;
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ArrayIterator = module.exports = function (arr, kind) {
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if (!(this instanceof ArrayIterator)) throw new TypeError("Constructor requires 'new'");
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Iterator.call(this, arr);
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if (!kind) kind = "value";
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else if (contains.call(kind, "key+value")) kind = "key+value";
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else if (contains.call(kind, "key")) kind = "key";
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else kind = "value";
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defineProperty(this, "__kind__", d("", kind));
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};
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if (setPrototypeOf) setPrototypeOf(ArrayIterator, Iterator);
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// Internal %ArrayIteratorPrototype% doesn't expose its constructor
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delete ArrayIterator.prototype.constructor;
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ArrayIterator.prototype = Object.create(Iterator.prototype, {
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_resolve: d(function (i) {
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if (this.__kind__ === "value") return this.__list__[i];
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if (this.__kind__ === "key+value") return [i, this.__list__[i]];
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return i;
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})
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});
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defineProperty(ArrayIterator.prototype, Symbol.toStringTag, d("c", "Array Iterator"));
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