- website: https://flowtype.org/
- original announcment: https://code.facebook.com/posts/1505962329687926/flow-a-new-static-type-checker-for-javascript/
- paper: http://www.cs.umd.edu/~avik/papers/iogti.pdf
- inspection utility: https://github.com/flowtype/flow-inspect
Contrast with intrinsic type systems (ML, Haskell, Java, Scala).