2 var $ = require('../internals/export');
3 var IS_PURE = require('../internals/is-pure');
4 var anObject = require('../internals/an-object');
5 var aFunction = require('../internals/a-function');
6 var iterate = require('../internals/iterate');
8 // `Map.prototype.merge` method
9 // https://github.com/tc39/proposal-collection-methods
10 $({ target: 'Map', proto: true, real: true, forced: IS_PURE }, {
11 // eslint-disable-next-line no-unused-vars
12 merge: function merge(iterable /* ...iterbles */) {
13 var map = anObject(this);
14 var setter = aFunction(map.set);
16 while (i < arguments.length) {
17 iterate(arguments[i++], setter, { that: map, AS_ENTRIES: true });