Create-react-app: Consider a preinstall step to prevent mixed npm/yarn installations

[gaearon]

See https://github.com/yarnpkg/yarn/issues/5240.

I'm not optimistic either party will resolve this. We might need to generate a preinstall script that prevents you from running npm when the project has yarn.lock and vice versa.

[zkat]

Sorry, I thought I was being helpful :( I was hoping we could figure this out alright. :< :< :<

[gaearon]

You totally were! Sorry I wasn’t being clear. I’m referring to an out-of-band conversation with other Yarn team members indicating they don’t think it’s very likely they’d be overwriting the installed package.json 😞

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Edit: since this comment is now circulating on the web I want to clarify I didn’t bring it up with the Yarn team. I’m referring to an off-the-cuff remark by a single person on a technical aspect of this. That was not a decision but a casual three-word exchange between two people who sit in front of each other in the same room. I filed this issue for myself to look into it in case that it doesn’t get solved after I bring it up with the team properly (which I didn’t have time to do yet). I don’t know opinions of other team members and their manager, and don’t claim to represent them. There was most definitely no decision or even a discussion on this. I regret that my comment triggered a chain of misinformation.

[zkat]

oh. Well that sucks. Thanks for trying and taking the initiative to get this ball rolling anyway. lmk if there's anything else I can do to help.

[gaearon]

There appears to be some movement on the Yarn issue/PR. Since solving it on our side would be very hacky in either case, I'm going to optimistically assume this gets solved there, and close this issue.