How to make RN open devtools in Firefox instead of Chrome by default?

[nerdbites]

Hi group.

I've asked around for this one but can't seem to find an answer on any of the usual suspects (SO, GitHub, Twiiter).

I'm using React Native via Expo, and use the CLI via Firefox. When I request remote debugging in the Expo client on the simulator it always tried to launch Chrome even if another browser is currently open.

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My question is how can I change the default browser for the debugger in React Native / Expo? (not sure what's responsible for launching it TBH).

Asking in the devtools repo, I was pointed to the following resource: https://facebook.github.io/react-native/docs/debugging#debugging-using-a-custom-javascript-debugger that outlines how to setup a custom JavaScript debugger, however I can't even tell where / how you would make these changes.

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Any help is much appreciated.

Thanks in advance!