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Automatically install dependencies on yarn start?

See original GitHub issue

Developers less familiar with modern JavaScript likely have trouble understanding why an error message like this comes up after running yarn start:

Would create-react-app benefit from adding a check on yarn start that ensures the latest dependencies are already installed?

Issue Analytics

State:
Created 6 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

2reactions

miraagecommented, Jan 16, 2018

If you ask me I would stick to option to show message but not install dependencies. Side-effects are always tricky to maintain.

2reactions

gaearoncommented, Jan 15, 2018

I think we should improve this message. We already parse it so might as well add some friendly instructions.

I don’t think automatic installation is something we’d want to pursue. There are many details that are easy to get wrong: npm and yarn can break each other’s trees (and we don’t know which one the user used last), the dependency may still be missing in package.json and we might install a wrong version, there might be a typo so installing won’t help, etc.

With that in mind would you like to work on brainstorming how to improve this message for the most common cases?

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