At my work at Delorean I've developed a helper tool for those projects where you use the Content Delivery API and uSync, and would like to have Typescript for your frontend needs.

I've seen a few discussions here where this has been requested.

Feel free to check it out, perhaps it can be of help to your future project: https://github.com/DeloreanSE/usync-typescript-generator

Hopefully in the future this will be solved by built in functionality and have even better support.