`firebase emulators:start` not working on WLS on Windows 10

[REQUIRED] Environment info

firebase-tools: 7.0.2

Platform: WSL on Windows 10

[REQUIRED] Test case

An empty project with the auto-generated Cloud Functions boilerplate is enough to reproduce it.

[REQUIRED] Steps to reproduce

Run firebase emulators:start

[REQUIRED] Expected behavior

I should be able to use the local environment.

[REQUIRED] Actual behavior

It starts the local server at port 5001, if I open it in Chrome I get a { "status": "alive" } response, but after 30 seconds it shuts down by itself because of a “timeout”.

✔  functions: Emulator started at http://localhost:5001
i  Shutting down emulators.
i  Stopping functions emulator

Error: TIMEOUT: Port 5001 was not active within 30000ms

The project works fine when deployed to Google Cloud. I tried to run it with sudo also.

If I visit the demo “hello world” endpoint I get an error saying the endpoint is not available.

I tried to run it with --debug but no additional information is displayed during the shutdown/timeout

[samtstern]

I was able to reproduce this bug at home on my personal machine (we don’t have Windows at work) so it’s definitely real! I didn’t have time to start debugging but I will try that next.

[samtstern]

Ok version 7.5.0 should work well for all you Windows Linux Subsystem users out there!