Support TypeScript linting

Now that kcd-scripts supports building TypeScript (see https://github.com/kentcdodds/kcd-scripts/pull/131 & https://github.com/kentcdodds/kcd-scripts/pull/133), eslint-config-kentcdodds should be able to lint TypeScript (like @KubaJastrz said):

Also, I think that kcd-scripts lint will fail on TypeScript files when using the default configuration. https://github.com/kentcdodds/eslint-config-kentcdodds should also be updated.

I wanted to first open this issue so we can discuss how we would handle it.

In my opinion we have 3 options:

1. Add a kentcdodds/typescript config, like we already have for react, jest, … This is how most other configs are doing it (see plugin:import/typescript, prettier/@typescript-eslint, …) This means we need to check in some way whether react/jest/… is used, because overriding rules from those configs without using them will throw an error.
2. Add kentcdodds/react-typescript/kentcdodds/jest-typescript/… configs that extend the normal configs and override the necessary rules
3. Automatically check if typescript is a dependency and add rule overrides in the already existing configs

I’m in favor of 2 or 3, but I’m happy to hear your thoughts @kentcdodds. 🙂

[kentcdodds]

Let’s revive this 😃 I’m building something with TypeScript right now and would love to have better linting support. I’ll probably work on this sometime later if nobody gets to it before me.

[MichaelDeBoey]

Just to be sure I understand correctly: overrides is the same as extends, but for specific globs right? 🤔 You don’t have a ‘clean slate’ when using overrides, right? 🤔