Flow Typecast Comments

In flow, you can typecast with the following,

(obj: Class).property

You can also do this with comments,

(obj /*: Class */).property

However, this gets transformed into,

obj /*: Class */.property

Both are syntactically valid, but only one is recognised by flow. Maybe we’d just want to check comments that start with :?

Happy to help if you decide what direction we should go!

Edit

Also,

const x = (input /*: string */) /*: string */ => {};
// to
const x = (input /*: string */ /*: string */) => {};

[vjeux]

We now have a much better infrastructure for dealing with comments so we should be able to fix all the issues reported here 😃

[brownieboy]

Any update on this one?

Flow comment-style annotations are still being moved from outside to inside the parens on arrow functions for me. I’m using Prettier 1.7.0.