Describe the bug

We can't upgrade SvelteKit to the latest Vite because we get this error:

│ ../../node_modules/.pnpm/[email protected]/node_modules/vite/dist/node/index.d.ts(38,23): error TS7016: Could not find a declaration file for module 'ws'. 'node_modules/.pnpm/[email protected]/node_mod
│   Try `npm i --save-dev @types/ws` if it exists or add a new declaration (.d.ts) file containing `declare module 'ws';

Reproduction

git clone [email protected]:sveltejs/kit.git
cd kit
pnpm install
pnpm run check

System Info

Vite 2.6.8

Used Package Manager

pnpm

Logs

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Make sure this is a Vite issue and not a framework-specific issue. For example, if it's a Vue SFC related bug, it should likely be reported to https://github.com/vuejs/vue-next instead.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.