Bun Inspect ignoring debugger statement

[Braayy]

What version of Bun is running?

1.0.0+822a00c4d508b54f650933a73ca5f4a3af9a7983

What platform is your computer?

Linux 6.1.52-1-lts x86_64 unknown

What steps can reproduce the bug?

I've search about debugging with bun, and i found out about the --inspect flag.

So i've got testing this feature with a simple script, but it didn't work out.

Running bun --inspect index.ts simply logs "Hello World!" and nothing else happens. The debugger statement is ignored.

debugger;
const message = 'Hello World!';
console.log(message);

So i thought that i needed an infinite loop at the end for it to work.

debugger;
const message = 'Hello World!';
console.log(message);
while (true) {}

The code is executed normally and hangs at the end, but now a web debugger link appears on the console as well.

So i click on the link to access the web debugger, but it is empty. No breakpoint hit neither source code for me to inspect.

So then i tested if a get something if a do a infinite loop using setInterval.

setInterval(() => {
  debugger;
  console.log('Hello World!');
}, 1000);

And now it works correctly, even if i put the debugger statement.

What is the expected behavior?

I think the expected behavior is that if there is a debugger statement, even if the program doesn't hang with a infinite loop, a breakpoint hit should make the program stop, a web debugger link should appear on the console and the web debugger should be populated with the running script.

What do you see instead?

No response

Additional information

No response

[telamon]

Confirming that debugger statements are ignored. Please fix this :pray:

[bnwa]

Also encountering this behavior in very simple graph walk file logic, should have multiple opportunities to break on the keyword

[aureliomarcoag]

I could work around this by using

bun run --inspect-brk <file>

which adds and breaks at the first line of the file.

From here, I just open the inspect URL in a browser and hit Continue script execution (⌃Y or ⌃\) and then bun correctly breaks at the debugger I added to my code.

[tmewett]

Is there any other way to pause the Bun debugger via code? Any Bun-specific API or something?