Support TypeScript and Flow

[mohsen1]

Highlighting TypeScript and Flow would be nice. Not sure how you can achieve both syntaxes.

[thlorenz]

I haven't used either TS or flow, but I agree it'd be nice. Are you interested in researching this a bit and submit a prototype PR just to get us started?

[ariya]

It's going to be challenging since type annotation is a syntax feature while highlighting is much more low-level.

Currently Cardinal already gracefully handles TS code quite well (since it operates at the token level), i.e. it doesn't stop working or bail out when encountering type annotations:

[HairyRabbit]

Any update here? I'd like to have the @types/cardinal for ts user.