Apply TypeScript rules to additional file types

[jose-elias-alvarez]

Currently, TypeScript-specific rules in the typescript config apply to .ts files but not .tsx files. This PR simply adds the .tsx extension to the files array.

[bmish]

There's a place we need to do this in base.js too.

[bmish]

Let's add .mts and .cts extensions while we're here.

https://www.typescriptlang.org/docs/handbook/esm-node.html#new-file-extensions

[jose-elias-alvarez]

Thanks for the quick review! Updated the list of filetypes in the base and typescript configs and also updated the PR title.

[bmish]

Can you also add the new extensions to:

• lib/rules/no-missing-tests.js
• lib/utils/is-test-file.js
• tests/lib/utils/is-test-file.js

[bmish]

I would consider this a breaking change. What's your level of urgency with getting this out?

[jose-elias-alvarez]

Can you also add the new extensions to:

• lib/rules/no-missing-tests.js
• lib/utils/is-test-file.js
• tests/lib/utils/is-test-file.js

Updated!

I would consider this a breaking change. What's your level of urgency with getting this out?

I agree that this could be considered a breaking change, since it's likely to trigger linting errors in files that didn't have them before. No specific urgency from our end - the motivation came from a project with custom configs extending the Square configs, so it's not too hard for us to do this on our end for now.

[bmish]

Thanks!