Merge branch 'master' of http://47.93.189.255:8099/r/zhangshi_app_web

feige

2024-05-18 a1aa9e19a73c7191f1c3d2b5a8c181ddb9013937

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// we can't use just `it == null` since of `document.all` special case
// https://tc39.es/ecma262/#sec-IsHTMLDDA-internal-slot-aec
module.exports = function (it) {
  return it === null || it === undefined;
};