FWIW I used TypeScript in anger with React, and hated it so much I rewrote all the React code in regular JavaScript. TypeScript and React, IMO, are a poor fit.

To be clear: I do like TypeScript and use it almost exclusively on the server, so this isn't a case of me "not liking TypeScript". It's the combination of the two. Basically, all of the stuff I did to keep TypeScript happy when using React was worthless overhead and brought nothing but pain, warping the codebase horribly. The JavaScript version with React was smaller, lighter, and had way less cognitive overhead. YMMV.