util.inspect(new CompressionStream()) returns undefined #52263
Description
Version
v21.7.1
Platform
Linux my-laptop 6.5.0-26-generic #26-Ubuntu SMP PREEMPT_DYNAMIC Tue Mar 5 21:19:28 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
Subsystem
stream/web
What steps will reproduce the bug?
const stream = new CompressionStream('gzip');
console.log(stream); // undefinedThis applies to DecompressionStream() as well.
How often does it reproduce? Is there a required condition?
Earlier Node.js versions show the same behavior.
The behavior is the same regardless of whether it is accessed as a global variable or as an import from stream/web.
The behavior happens on my machine, but it appears on other users that tried it too. I also tried it on an online REPL for Node.js.
What is the expected behavior? Why is that the expected behavior?
The return value should not be undefined.
What do you see instead?
The return value is undefined.
Additional information
I tried it in Firefox and Chrome, and it does not return undefined.
When calling CompressionStream.toString(), it appears the correct source code is being used. That source code looks normal to me.
What I find very strange is how new ... can return undefined. I through it was impossible. Even if the constructor returned a value (which it does not here), that value is ignored if it is undefined.