Flow now supports Mapped Types, inspired by TypeScript. Read more about them in our new blog post:

RT @t3dotgg:

RT @vincentriemer: The render types section of the blog post doesn't even go all that in depth. This is contrived for the sake of concisen….

We added new language features to Flow for writing React. Learn about our new Component Syntax:

Flow now supports Type Guards (functions that can be used to narrow a type)! Unlike @TypeScript, we run checks on the body of the function to catch some invalid definitions.

RT @YannDinendal: @flowtype is now releasing some TS features before TS! xD. .> Flow now supports the same NoInfer….

Flow now supports Conditional Types, which allow you to choose an output type based on an input type - like a ternary expression for types:.

Flow now uses "as" syntax for type-casting, and unlike TypeScript it's safe:.

We’ve refreshed our documentation ( , and added the ability to configure options and lints in Try Flow (!.Website is now built with @docusaurus.

Announcing 5 new Flow tuple type features: .

Flow can now detect unused Promises:.

Announcing Partial & Required Flow utility types + catch annotations:

We're making exact object types the default in Flow:.

We just announced a new type checking mode that will make Flow's inference much more predictable and reliable. Check out our latest blog post for more info and instructions for upgrading to the new mode.

Improved handling of the empty object in Flow:.

We just announced a new language enforcement flag to help prepare your codebase for Local Type Inference. Check out our latest blog post for more info and instructions for enabling that flag.

We just released a new language rule that'll make Flow's inference much more predictable. Check out our latest blog post for more info and instructions for upgrading to that new inference mode.

RT @brianzchen: flow-typed has just released our first chrome extension to help you find out if a library definition is available that much….

Introducing Local Type Inference for Flow: we're making changes to the design of Flow's core type inference system in order to be more predictable and reliable!

TypeScript Enums vs. Flow Enums: a comparison between the enums features of @flowtype and @typescript .