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