| 'use strict'; |
| var $ = require('../internals/export'); |
| var IS_PURE = require('../internals/is-pure'); |
| var anObject = require('../internals/an-object'); |
| var aFunction = require('../internals/a-function'); |
| var iterate = require('../internals/iterate'); |
| |
| // `Map.prototype.merge` method |
| // https://github.com/tc39/proposal-collection-methods |
| $({ target: 'Map', proto: true, real: true, forced: IS_PURE }, { |
| // eslint-disable-next-line no-unused-vars |
| merge: function merge(iterable /* ...iterbles */) { |
| var map = anObject(this); |
| var setter = aFunction(map.set); |
| var i = 0; |
| while (i < arguments.length) { |
| iterate(arguments[i++], setter, map, true); |
| } |
| return map; |
| } |
| }); |