I also take issue with some of OP's unsubstantiated claims, but I'd like to add my own piece of anecdotal experience: The experience I've had around typing hig

I also take issue with some of OP's unsubstantiated claims, but I'd like to add my own piece of anecdotal experience: The experience I've had around typing higher-order components in general, and specifically with the recompose library (https://github.com/acdlite/recompose https://github.com/acdlite/recompose), which I use heavily in just about every React project, has been much better in Flow than in TypeScript. Now this is not completely fair to TypeScript since the recompose types for it were still a work in progress last time I tried it, but recompose is a central building block in most of the codebases I work with on a day-to-day basis, so good typing around it is a vital consideration for me, and possibly others who prefer to work with React components using functional composition.