Wrong code in error handling chapter "Error handling, try catch"

There is a wrong code in the Error Handling chapter. Refer to the image and code below:

try {
  user = { /*...*/ };
} catch (err) {
  if (err instanceof ReferenceError) {
    alert('ReferenceError'); // "ReferenceError" for accessing an undefined variable
  }
}

This should output as follows in a browser environment.

and, nothing should be there in the terminal in Node js env. as nothing is being returned or logged.
But, as per the website when you ran the code, it shows this:

For reference it's the second code snippet under: https://javascript.info/try-catch#rethrowing

It might be using "use strict" internally, but its quite misleading.

開啟 Error Handling 章節中「Rethrowing」下的第二個程式碼片段，並在瀏覽器和 Node.js 中執行所示範例。將觀察到的輸出與 issue 的螢幕截圖進行比較，然後修正該片段或其說明，使文件記載的行為與兩個環境中的行為一致。