Use ESLint new flat config system

[filetvignon]

Is your proposal related to a problem?

ESLint is deprecating its current config system and moving to a new one.

Blog post: https://eslint.org/blog/2022/08/new-config-system-part-1/ Docs: https://eslint.org/docs/latest/use/configure/configuration-files-new

I can't find a way to make CRA eslint rules to work with the new config system.

[connorjs]

Quick note for consumers that want to move to flat config. I think this works.

1. Set up plugins.
2. Include rules. The overrides[0] is TypeScript specific.

plugins: {
	flowtype: flowtypePlugin,
	"jsx-a11y": jsxA11y,
	react: reactPlugin,
	"react-hooks": reactHooks,
},
rules: {
	...reactAppConfig.rules,
	...reactAppConfig.overrides[0].rules,
},

[lmeysel]

still no progress :( eslint v9 makes flat config to be the default format and deprecates .eslintrc

[bayasdev]

still no progress :( eslint v9 makes flat config to be the default format and deprecates .eslintrc

+1