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21 lines
751 B
21 lines
751 B
'use strict'; |
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var $ = require('../internals/export'); |
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var aCallable = require('../internals/a-callable'); |
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var anObject = require('../internals/an-object'); |
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var iterate = require('../internals/iterate'); |
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// `Map.prototype.merge` method |
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// https://github.com/tc39/proposal-collection-methods |
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$({ target: 'Map', proto: true, real: true, arity: 1, forced: true }, { |
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// eslint-disable-next-line no-unused-vars -- required for `.length` |
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merge: function merge(iterable /* ...iterables */) { |
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var map = anObject(this); |
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var setter = aCallable(map.set); |
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var argumentsLength = arguments.length; |
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var i = 0; |
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while (i < argumentsLength) { |
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iterate(arguments[i++], setter, { that: map, AS_ENTRIES: true }); |
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} |
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return map; |
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} |
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});
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