TODOs for @babel/parser@7.17.0

[fisker]

TODOs:

• Add test for Reinterpret << when parsing TS type arguments babel/babel#14145
• Support v flag Add parser support for the "regexp unicode sets" proposal babel/babel#14086
• Support decoratorsAutoAccessors ? Add the decoratorsAutoAccessors parser plugin babel/babel#13681
• Support destructuring private fields Parse destructuring private fields babel/babel#13931
• Add more topics to pipeline operator? proposal-pipe: Add support for ^^ and @@ topics babel/babel#13973

Some new syntax support should be added in separate PRs.

Originally posted by @fisker in #12241 (comment)

[sosukesuzuki]

@fisker Are there any tasks you're already working on?

[fisker]

I'm not working on any of them.

[sosukesuzuki]

I don't think we should add support for new topicToken. It is still an experimental feature, and it seems a hard to prepare so many tests for it. We should fix it when the pipeline proposal progresses and the topicToken is decided.