When you use this plugin you must install typescript?

[darewreck54]

I posted the question in the discussion. It's not clear if this is a bug or if I'm just doing it incorrect.
#11704

Describe the bug

I clone the create-react-app repo and ran the following commends:

npx create-react-app tester4 --scripts-version file:./create-react-app/packages/react-scripts --template file:./create-react-app/packages/cra-template-typescript

....

cd tester4
yarn start                                                                           
yarn run v1.22.17
$ react-scripts start
**When you use this plugin you must install `typescript`.**
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

I would expect it to work similar to when you just call npx create-react-app tester4 --typescript, but it's not.

Questions

1. isn't npx create-react-app tester4 --typescript the same as npx create-react-app tester4 --scripts-version file:./create-react-app/packages/react-scripts --template file:./create-react-app/packages/cra-template-typescript
2. When you see the message When you use this plugin you must install typescript`` what are you suppose to do. Do you just install typescript in the custom --script-version. Like in this case, isn't -scripts-version file:./create-react-app/packages/react-scripts the default anyways?

Thanks,
Derek

[quisido]

The react-dev-utils package is using an outdated version of fork-ts-checker-webpack-plugin. The published version uses 4.x, while the unpublished code in this repo uses 6.x. The 6.x version needs to be published. I don't know what the blocker is for publishing it.

[darewreck54]

I think the new release 5.0 addressed the issue.