34 lines
1.1 KiB
JavaScript
34 lines
1.1 KiB
JavaScript
'use strict';
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var addToUnscopables = require('./$.add-to-unscopables')
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, step = require('./$.iter-step')
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, Iterators = require('./$.iterators')
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, toIObject = require('./$.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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, kind = this._k
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, 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'); |