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- 'use strict';
- var call = require('../internals/function-call');
- var aCallable = require('../internals/a-callable');
- var anObject = require('../internals/an-object');
- // https://github.com/tc39/collection-methods
- module.exports = function addAll(/* ...elements */) {
- var set = anObject(this);
- var adder = aCallable(set.add);
- for (var k = 0, len = arguments.length; k < len; k++) {
- call(adder, set, arguments[k]);
- }
- return set;
- };
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