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Typescript version isssue

See original GitHub issue

As per docs ran the ... create-react-app --typescript command. I eject it. yarn start it. The project runs but before server is up after hitting the command yarn startThere is a warning that says "TYPESCRIPT supported versions are >3.2.0 and ❤️.5.0 ".

I’m afraid I didn’t manually upgrade typescript version but did have to run yarn install after ejecting.

The current version of typescript installed is 3.5.1.

Should I consider this warning as serious and degrade my typescript?


WARNING: You are currently running a version of TypeScript which is not officially supported by typescript-estree.

You may find that it works just fine, or you may not.



Please only submit bug reports when using the officially supported version.


Issue Analytics

  • State:closed
  • Created 4 years ago
  • Reactions:11
  • Comments:6 (1 by maintainers)

github_iconTop GitHub Comments

wilbocommented, Jun 5, 2019

Found related issue in TypeScript ESLint:

I think it will be fixed soon.

svicaliforniacommented, Jun 17, 2019

Per the typescript-eslint docs, I tried to suppress this error by falsifying the warnOnUnsupportedTypeScriptVersion parser option in eslintConfig in package.json:

  "eslintConfig": {
    "extends": "react-app",
    "parserOptions": {
      "warnOnUnsupportedTypeScriptVersion": false

But the error message still shows on npm start. Any idea why this didn’t work?

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