Add eslint-config-rome

[nstepien]

Just like eslint-config-prettier, I think Rome should publish a eslint-config-rome package.

What eslint-config-prettier does is it disables ESLint rules that are covered by the prettier formatter.
So eslint-config-rome could do the same:

• when Rome's formatter is enabled, eslint-config-rome would disable equivalent lint rules in ESLint
• when Rome's linter is enabled, eslint-config-rome would disable equivalent lint rules in ESLint
  • it should check which Rome rules are enabled, so if a Rome rule is disabled, the equivalent ESLint rule should not be disabled.

This would allow for a smooth transition from ESLint to Rome, and improve ESLint performance as fewer rules would need to run.
The ESLint ecosystem is quite big, so I wouldn't expect Rome to 100% replace it for some years. Happy to be proven wrong though.

For reference:

• https://github.com/prettier/eslint-config-prettier
• https://prettier.io/docs/en/integrating-with-linters.html

[strager]

I think this is a good idea.

I considered something similar for quick-lint-js (my linter), but further: ESLint could run quick-lint-js (in addition to ESLint's original rules). That way the user still has all their lint rules in one place (ESLint). quick-lint/quick-lint-js#682

[MichaReiser]

@nstepien Have you tried using eslint-config-prettier? I would expect it to work out of the box since Rome embraces Prettier's formatting. This isn't saying that we shouldn't publish such a package but could be a short-term workaround.

[nstepien]

Yes we're already using it 👍
But it only covers the formatting part, we still have overlapping rules between ESLint and Rome's linter.

[nstepien]

I could be wrong, but I think eslint-config-rome could itself extend eslint-config-prettier to not duplicate their work.