| 1234567891011121314 | '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-methodsmodule.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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