Use (j|t)sx in getLanguageVariant, rather than just tsx

[JoshuaKGoldberg]

...and of course, immediately after #525 was resolved, I remembered that we haven't updated for TypeScript being able to run on .jsx files as well as .tsx.

[dnguneratne]

Can I work on this?

[JoshuaKGoldberg]

Absolutely @dnguneratne, please do! It should be a quick change to the regular expression mentioned in that issue.

[dnguneratne]

I think I need a bit of clarity here.
In PR #525,

-- src/utils/AstUtils.ts --
if (/.*\.tsx/i.test(node.fileName)) { was replaced with
if (node.fileName.endsWith('.tsx')) {.

If I am understanding this one correctly I should change
if (node.fileName.endsWith('.tsx')) { to
if (node.fileName.endsWith('.(j|t)sx')) { right?

[JoshuaKGoldberg]

Hey @dnguneratne - looks like this was already resolved. All is well!

By (j|t) I was referring to regular expression syntax implying it could be satisfied by .jsx or .tsx at the end.

[dnguneratne]

Got it. Thanks for the clarification.