RFC

For context, in #6019 we discussed changing config names in v6. Part of that outcome is that the old plugin:@typescript-eslint/recommended-requiring-type-checking config would be renamed in v6 as plugin:@typescript-eslint/recommended-type-checked, with an alias left for easier backwards compat.

Quoting @JamesHenry's #6515 (comment):

I know this is not technically related to this PR:

...but in reading through this I can't help thinking that it might be more desirable to be explicit and hard error when users try and use the old config names. If we provide a clear error message with a link to the docs outlining all the config options it could serve as a really useful prompt for users to revaluate their linting setups? (And a rare chance for us to do so in a major version). I can't help feeling like the pain of it going away will have to happen at some point, and if it happens now while it's fresh in everyone's minds we can make the experience as good as possible.

WDYT?

Now that I've had more time to ponder the breaking changes, I do like the idea of pressuring users to use the new config (and read the release notes). But I'm a little hesitant to hard break configs so immediately. How about we go with:

• v6: keep the alias, with a console.warn
• v7: throw an error
• v8: delete

cc @bradzacher

Additional Info

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