client types are incompatible with 'webworker' lib

[lgrahl]

Describe the bug

The vite/client types result in type errors when used in sources where lib was declared to be webworker. It runs fine in vite but throws errors when validating via tsc.

Reproduction

git clone https://github.com/lgrahl/vite-client-in-worker
cd vite-client-in-worker
npm install
npx tsc --noEmit -p src/app/tsconfig.json; npx tsc --noEmit -p src/worker/tsconfig.json

Analysis

The issue is that vite/client is referencing DOM (see vite/client.d.ts) which is a superset of what workers can do. However, AFAICT vite/client doesn't need that superset.

Related: microsoft/TypeScript#20595

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[lgrahl]

For those interested in a workaround: If you don't need support for *?worker, *?worker&inline and *?sharedworker (which can be replaced easily by *?raw and *?url), copy vite/client.d.ts and reference that copy. Remove the declarations of the above mentioned module types.

[bluwy]

IIUC /// <reference lib="dom" /> in vite/client is interfering with typechecking as it conflicts with webworker? I think that could be breaking. Perhaps we can expose another vite/worker instead? Feel free to send a PR if you have ideas to solve this, and we can discuss there onwards too.