Provide types for the function runtime

[Janpot]

Steps to reproduce 🕹

1. Create a function query

2. observe the type errors:

   

Introduced in https://github.com/mui/mui-toolpad/pull/1180 where we removed the DOM lib by default from the TypeScript editor. This is a good thing, because the DOM lib included way more types than the function runtime supports. We'll just have to build a custom .d.ts file for the function runtime that only includes what it supports. for now:

• fetch, (Headers, Response, FormData,...)
• URL
• console
• setTimeout, clearTimeout
• AbortController
• TextEncoder
• streams
• ...?

Any way we can automate this? Can we do something with https://github.com/microsoft/TypeScript-DOM-lib-generator to generate a subset?

[prakhargupta1]

Closing as discussed with Jan