'use strict'; // https://tc39.es/ecma262/#sec-IsHTMLDDA-internal-slot var documentAll = typeof document == 'object' && document.all; // `IsCallable` abstract operation // https://tc39.es/ecma262/#sec-iscallable // eslint-disable-next-line unicorn/no-typeof-undefined -- required for testing module.exports = typeof documentAll == 'undefined' && documentAll !== undefined ? function (argument) { return typeof argument == 'function' || argument === documentAll; } : function (argument) { return typeof argument == 'function'; };