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eslint-config-react-app > @typescript-eslint/parser missing typescript? #8745
Description
Describe the bug
Running:
npx eslint .
Returns:
Failed to load parser '@typescript-eslint/parser' declared in 'package.json » eslint-config-react-app#overrides[0]': Cannot find module 'typescript'
Did you try recovering your dependencies?
Tried reinstalling everything, sadly it didn't work.
I've also tried installing typescript as described in the error but it was lacking a tsconfig.json and I also doubt I should have one if this is not a typescript project.
Environment
Environment Info:
current version of create-react-app: 3.4.0
running from /Users/peteyycz/.nvm/versions/node/v10.19.0/lib/node_modules/create-react-app
System:
OS: macOS 10.15.4
CPU: (4) x64 Intel(R) Core(TM) i5-5257U CPU @ 2.70GHz
Binaries:
Node: 10.19.0 - ~/.nvm/versions/node/v10.19.0/bin/node
Yarn: Not Found
npm: 6.14.2 - ~/.nvm/versions/node/v10.19.0/bin/npm
Browsers:
Chrome: 80.0.3987.149
Firefox: 74.0
Safari: 13.1
npmPackages:
react: ^16.13.1 => 16.13.1
react-dom: ^16.13.1 => 16.13.1
react-scripts: 3.4.1 => 3.4.1
npmGlobalPackages:
create-react-app: 3.4.0
Steps to reproduce
(Write your steps here:)
npx create-react-app myappcd myappnpx eslint .
Expected behavior
It should have ran eslint.
Actual behavior
Failed to load parser '@typescript-eslint/parser' declared in 'package.json » eslint-config-react-app#overrides[0]': Cannot find module 'typescript'
Additional resources
Based on my investigation it might be related to how eslint is now resolving configuration:
https://eslint.org/docs/user-guide/migrating-to-6.0.0#package-loading-simplification
Which I have found here:
standard/semistandard#249
EDIT: although now I think about it it's probably a different issue: their case the plugin was missing but in my case the plugin is found but the plugin is missing typescript as a peerdep.
and this optional: https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/parser/package.json#L56 is not really optional
Might also be related
eslint/eslint#12376
Activity
obrejla commentedon Mar 31, 2020
Hi, I have the same problem.
Started to happen once I updated react and react-dom from 16.10.0 and react-scripts from 3.2.0.
stale commentedon Apr 30, 2020
This issue has been automatically marked as stale because it has not had any recent activity. It will be closed in 5 days if no further activity occurs.
alex-benoit commentedon Apr 30, 2020
you can fix this by adding
typescriptto your dependenciesnpm install typescript --save-devChernavskikh commentedon May 16, 2020
Having a same problem with latest create-react-app version
Annis-Monadjem commentedon May 18, 2020
having exact same problem:
Kernel: 4.15.0-99-generic x86_64 bits: 64 compiler: gcc v: 7.5.0 Desktop: Xfce 4.14.1
Distro: Linux Mint 19.3 Tricia base: Ubuntu 18.04 bionic
damien-git commentedon May 18, 2020
I think this is related to #6834 (reported on April 2019).
tnovau commentedon Jun 7, 2020
yarn add -D typescriptstale commentedon Jul 11, 2020
This issue has been automatically marked as stale because it has not had any recent activity. It will be closed in 5 days if no further activity occurs.
stale commentedon Jul 18, 2020
This issue has been automatically closed because it has not had any recent activity. If you have a question or comment, please open a new issue.