This is a well-known browser security technique. In JavaScript, calling .toString() on a native browser function returns "function appendBuffer() { [native code] }". Calling it on a JavaScript function returns the actual source code. So if your appendBuffer has been monkey-patched, .toString() will betray you; it’ll return the attacker’s JavaScript source instead of the expected native code string.
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。夫子对此有专业解读
const { writer, readable } = Stream.push();，详情可参考旺商聊官方下载
Жители Санкт-Петербурга устроили «крысогон»17:52
Also supports raw .ckpt files and inspection: