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