On npmjs.com, displays an icon if a library ships with Flow types, or types are available through flow-typed.
On npmjs.com, when viewing a package's information npmjs currently displays an icon if the package published with Typescript definitions or alternatively has type definitions hosted on definitely typed.
This extension does the same but for flowtype and will render a little yellow flow icon next to the package title if it publishes with flow definitions and alternatively a blue flow icon if there are definitions hosted on the flow-typed github repo.