Vague `failed to transpile` error -- `noEmitOnError: true` breaks rpt2

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 do npx 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 have pnpm then first run npm install -g pnpm

git clone [e-mail]:sveltejs/kit.git
cd kit
git reset --hard 2483ae3730a7219814cc654c03b0409a797de2ee
pnpm install
pnpm -r build

After this, you can build just the relevant sub-project by running cd packages/kit and then npx rollup -c for faster debugging

Other context

Looks like it’s coming from here: https://github.com/ezolenko/rollup-plugin-typescript2/blob/6fb0e75f5328666dca8ff7b11bc956096351a3eb/src/index.ts#L221

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

[agilgur5]

#345 has been released in 0.33.0

[agilgur5]

Actually, the type-only portion of this should be fixed by #345 as this use-case was using tsconfig include globs (duplicating #298). There’s more fixes to come for different situations with type-only files though.