Where can I find .eslintrc in CRA?

Question

When using npx create-react-app appname, the react-scripts package which is installed includes an eslint dependency with "a minimal set of rules that find common mistakes." I want to use prettier and eslint but I can't find information on which, if any, eslint plugins are also installed as part of CRA or find where the base ESLint config to see what is included. I will extend the base ESLint config if needed but the CRA docs say it is Experimental so I want to avoid it if I can.

EDIT: More detailed information

Without manually installing ESLint as a dependency I get (somewhat expected) missing peer dependency errors for all of the plugins and config dependencies.

With ESLint installed as a dependency I get a CRA error:

    > react-scripts start


There might be a problem with the project dependency tree.
It is likely not a bug in Create React App, but something you need to fix locally.

The react-scripts package provided by Create React App requires a dependency:

  "eslint": "^6.6.0"

Don't try to install it manually: your package manager does it automatically.
However, a different version of eslint was detected higher up in the tree:

  ~\client\node_modules\eslint (version: 7.2.0)

Manually installing incompatible versions is known to cause hard-to-debug issues.

Answer 1

Package.json in your CRA app contains this

"eslintConfig": {
  "extends": "react-app"
},

You should just be able to create a .eslintrc file and that will get picked up instead.

The config can be found at https://github.com/facebook/create-react-app/tree/master/packages/eslint-config-react-app

It uses these plugins

['import', 'flowtype', 'jsx-a11y', 'react', 'react-hooks'].

Personally think you would be better off with the Airbnb eslint rules or if you want something more comprehensive checkout eslint-config-auto