Error: Failed to load parser '@typescript-eslint/parser'

[ziosa]

I run only this command:
npm run setup --silent

All output:

/bin/sh: yarn: command not found
⚠️  "/Users/szicar01/Repositories/concurrent-react" has a yarn.lock file, but this system does not have the right version of yarn installed. We'll install using npm instead, but you may experience issues. Install the correct version of yarn to get rid of this warning.
📦  starting `npm install --no-package-lock` in "/Users/szicar01/Repositories/concurrent-react"
  SOLINK_MODULE(target) Release/.node
  CXX(target) Release/obj.target/fse/fsevents.o
  SOLINK_MODULE(target) Release/fse.node
  SOLINK_MODULE(target) Release/.node
  CXX(target) Release/obj.target/fse/fsevents.o
  SOLINK_MODULE(target) Release/fse.node
husky > Setting up git hooks
husky > Done
added 1917 packages from 817 contributors and audited 907076 packages in 39.016s
found 0 vulnerabilities

🎉  finished installing dependencies in "/Users/szicar01/Repositories/concurrent-react"
💯  You're all set up! 👏
Error: Failed to load parser '@typescript-eslint/parser' declared in 'package.json » eslint-config-react-app#overrides[0]': Cannot find module 'typescript'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:581:15)
    at Function.Module._load (internal/modules/cjs/loader.js:507:25)
    at Module.require (internal/modules/cjs/loader.js:637:17)
    at require (/Users/szicar01/Repositories/concurrent-react/node_modules/v8-compile-cache/v8-compile-cache.js:161:20)
    at Object.<anonymous> (/Users/szicar01/Repositories/concurrent-react/node_modules/@typescript-eslint/typescript-estree/dist/parser.js:17:25)
    at Module._compile (/Users/szicar01/Repositories/concurrent-react/node_modules/v8-compile-cache/v8-compile-cache.js:194:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)
Determining test suites to run...%

Anyway npm start works!

[kentcdodds]

Hi @ziosa,

Like the warning says, you'll need to install yarn. Or you can use the codesandbox that's linked in the README. Good luck!

[kentcdodds]

Here's a link: https://codesandbox.io/s/github/kentcdodds/concurrent-react

[ziosa]

I didn't think that this error Failed to load parser '@typescript-eslint/parser' depended from yarn . Maybe yarn must be a dependecy and not an alternative to npm.

[kentcdodds]

I agree it's probably am issue I should look at eventually. But I don't have the bandwidth to look into that problem right now when there's such a simple solution (the codesandbox)