What happens and why it is wrong

I get the error:

[!] (plugin rpt2) Error: failed to transpile 'packages/kit/src/runtime/navigation/index.ts'

This is almost impossible to debug. Luckily I figured out I can donpx tsc and get the real error message:

src/runtime/navigation/types.ts:33:9 - error TS2304: Cannot find name 'Route'.33  route: Route;           ~~~~~Found 1 error.

Environment

Versions

npx: installed 1 in 1.212s  npmPackages:    rollup: ^2.32.0 => 2.32.0     rollup-plugin-typescript2: ^0.29.0 => 0.29.0     typescript: ^4.0.3 => 4.0.3

Steps to reproduce

If you do not havepnpm then first runnpm install -g pnpm

git clone git@github.com:sveltejs/kit.gitcd kitgit reset --hard 2483ae3730a7219814cc654c03b0409a797de2eepnpm installpnpm -r build

After this, you can build just the relevant sub-project by runningcd packages/kit and thennpx rollup -c for faster debugging

Other context

Looks like it's coming from here:

printDiagnostics right above looks to be being passed an empty array of diagnostics