Support for single line comments for JSX/TSX elements

[idr4n]

This was mainly described in #5453, which was closed based on block comments not being supported. However, I think the main issue is that even for single line comments, JSX elements use a different style of comments.

That is, if I want to comment even one single line in JSX/TSX elements, the comment style should be {/* ... */}, and for the rest of the file (simple JS or TS elements) it should be // as it is currently implemented.

Thanks in advance!

[pascalkuthe]

blocks comments are any comments that include text that is not inserted immidietly at the start of the line so this was correctly closed as a duplicate of #1505. JSX and TSX are implemented as injections so this should work automatically as soon as block comment support is available and the comment style is updated in languages.toml.

This feature is being implemented in #4718 which @gabydd plans to finish once he has more time afaik.

[gabydd]

Yeah I was looking at #1937 recently so I need to reconsider the block comment config to support this as well. I might work on it today actually.