'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 deleteAll(/* ...elements */) { var collection = anObject(this); var remover = aCallable(collection['delete']); var allDeleted = true; var wasDeleted; for (var k = 0, len = arguments.length; k < len; k++) { wasDeleted = call(remover, collection, arguments[k]); allDeleted = allDeleted && wasDeleted; } return !!allDeleted; };