- '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';
- };
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