Flow (or FlowType) is a type checker for Javascript, written in O-Caml by Facebook.
It is extensively used in all new Javascript Facebook project like Relay.

I'm about to write a linter for Flow.

Before these I want to gather usefulness from community and core

Community :

• did you use flow ??
• would you use flow linter ??

Core :

• i think it should be better as a arcanist linter as, let say, an aweful regex for regex-based-linter, did you agree ?
• i think it could in a long long term help stability adding some type annonation in Javelin and integrating flow into phabricator linting ? WDYT ?

Hope I did thinks correctly (this time) !