Upgrade ESLint from v7 to v8

[thedavidprice]

Ideally this will be upgraded for v1-rc.

ESLint Release Notes:

• https://github.com/eslint/eslint/releases/tag/v8.0.0

After naive upgrade, I hit the following error:

$ yarn lint

Oops! Something went wrong! :(

ESLint: 7.32.0

ESLint couldn't find the plugin "eslint-plugin-react".

(The package "eslint-plugin-react" was not found when loaded as a Node module from the directory "/Users/price/Repos/redwoodjs-redwood".)

Ideally this will be upgraded for v1-rc.

[nzdjb]

Howdy,

I gave this a shot, but found after getting set up that there's no current release of eslint-plugin-react that is compatible with eslint 8: jsx-eslint/eslint-plugin-react#3055

They have a PR to resolve that: jsx-eslint/eslint-plugin-react#3059

Looks like there are other plugins that will need updating too, but I haven't found the status of those yet. Will look into them later on.

[thedavidprice]

@nzdjb great info! If you want to watch that PR and help with the upgrade once a new version of eslint-plugin-react is published, that would be welcome. No pressure and not urgent.

[nzdjb]

Sure. I'll try to nail down the other blocking dependencies and list them here.

[nzdjb]

These are the PRs that need to be merged and released prior to upgrading to Eslint 8

• feat: support ESLint 8.x mysticatea/eslint-plugin#32
• [New] support eslint 8.x jsx-eslint/eslint-plugin-react#3059
• chore(CI): add tests for ESLint 8 prettier/eslint-plugin-prettier#428
• test: add ESLint 8.x tests testing-library/eslint-plugin-jest-dom#200
• [New] support ESLint 8.x jsx-eslint/eslint-plugin-jsx-a11y#810