I am hosting a simple monolithic web-app on vercel. I have migrated the code to typescript so the project now uses: Typescript, Mustache, ExpressJS, MySQL. The issue is I can’t get vercel to compile the typescript. After many experiments, reading as many docs as I could and tweaking and adding several configurations, these are my .JSON files now.

I am hosting a simple monolithic web-app on vercel. I have migrated the code to typescript so the project now uses: Typescript, Mustache, ExpressJS, MySQL. The issue is I can’t get vercel to compile the typescript. After many experiments, reading as many docs as I could and tweaking and adding several configurations, these are my .JSON files now.

I have an expressTS backend that I want to deploy on Vercel, I wanted to use vercel locally to be sure it runs ok before deploying. I installed vercel, did vercel login and then vercel dev configuring the project. When I follow the link given in the terminal in VS Code I have the error 502: BAD_GATEWAY Code: NO_RESPONSE_FROM_FUNCTION.