internaluploader/server/tsconfig.test.json

{
  // The tests run under Node's type stripping, which resolves imports by their
  // real filename — hence the `.ts` extensions in the test sources. The build
  // tsconfig cannot allow those, so tests get their own noEmit config.
  // Without this the test files would be the one surface nothing checks.
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "noEmit": true,
    "allowImportingTsExtensions": true,
    "rootDir": "."
  },
  "include": ["src/**/*.ts", "test/**/*.ts"]
}