Comment by stuartjohnson12

Sharing types between React and a Typescript backend is great DX for developing both in parallel and I've not seen anything that comes close to being as enjoyable. Being able to change the signature of an API endpoint and immediately having all places in the codebase where the change will cause problems flagged as type errors is wonderful. I went back to working with duplicated types across python/typescript on a contract project recently and it took me 5x longer to fix the downstream implications of signature changes.