Create-react-app: Fix `baseUrl` for `NODE_PATH=src`

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[niekert]

Out of curiosity, would this allow absolute imports in TS apps created with create-react-app?

I've been trying to get it working and remember setting the NODE_PATH for JS projects. Loving the Typescript support 🙏

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Yes, this will start permitting absolute imports in TS apps.

[tkazec]

Will this work with NODE_PATH=. as well?

I use this because it forces referencing src/, removing any ambiguity as to what is being imported.

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Not sure if we'll allow . or not, there's always https://github.com/facebook/create-react-app/issues/5118 which will let you import via @/.

[dawnmist]

We use the same as @tkazec, so that instead of having to have a dozen different absolute paths (plus paths for files that were under src itself...I'm not sure how src/App.ts would be referenced without the src prefix present) we only had one, and thus had a lot less risk of a name clash between one of our folders and an npm package name.

[unzico]

@niekert
If you're looking for a way to enable absolute path imports, see https://github.com/facebook/create-react-app/issues/5118#issuecomment-439665737

[jamesg1]

Adding "baseUrl": "./src", to my compilerOptions options in tsconfig.json worked for me.

[mindjuice]

@jamesg1 That's been working for me for over a year too, but on this new project, whenever I run yarn start, the baseUrl entry is removed from tsconfig.json!

Anyone have a way to prevent this?

[jamesg1]

@mindjuice Yeah I think there was a change which resets the baseUrl might have to use react rewired.

See https://github.com/facebook/create-react-app/issues/5118#issuecomment-464025389

[obituz]

@mindjuice The tsconfig is rewritten on every start. You have to use extends (https://github.com/facebook/create-react-app/issues/5645#issuecomment-461999138)

[iansu]

We now support setting baseUrl in tsconfig.json (and jsconfig.json). Currently you can only set it to node_modules (the default) and src. We are hoping to add support for aliases in the near future and may look at relaxing the restriction on baseUrl.

NODE_PATH is now deprecated and since you can just set baseUrl directly I think this can be closed.