--watch-path doesn't run the JavaScript file

[ksmithut]

Version

v19.8.1

Platform

Darwin [redacted] 22.3.0 Darwin Kernel Version 22.3.0: Mon Jan 30 20:39:35 PST 2023; root:xnu-8792.81.3~2/RELEASE_ARM64_T8103 arm64

Subsystem

command line options?

What steps will reproduce the bug?

With this file as index.js:

console.log('hello')

Run any of the following commands:

node --watch-path=./index.js index.js
node --watch-path=./ index.js
node --watch-path=./index.js --watch index.js
node --watch-path=./index.js --watch-preserve-output index.js

How often does it reproduce? Is there a required condition?

Every time

What is the expected behavior? Why is that the expected behavior?

I would expect the index.js file to run and "hello" be printed to the screen every time the file changes.

What do you see instead?

I see the messages of Restarting index.js, but no hello.

Additional information

No response

[debadree25]

I think we can mark this confirmed bug too? I am trying to take a shot at this

[echocrow]

Ran into this issue as well when executing node --watch-path some/path my/file.js.

From what I'm seeing, --watch-path ... does execute the root file.
However, the console output (or at least stdout) is omitted and not shown in the console.

Addendum:

• Also running Node v19.8.1.
• Running node --watch my/file.js does show the desired stdout.

[debadree25]

I think the problem lies of over here

node/lib/internal/main/watch_mode.js

Line 53 in 85705a4

const stdio = kShouldFilterModules ? ['inherit', 'inherit', 'inherit', 'ipc'] : undefined;

its possible i think when watch mode is running with --watch-path the child process is not connected to the parent process and hence the console logs are lost? not sure though what exactly could be the right options it seems passing 'inherit' makes it get stuck in a infinite loop

cc @MoLow