Fix tsconfig include/exclude glob resolution when tsconfig is not in project root

[jdz321]

Background

When tsconfigPath points to a tsconfig.json located outside the project root (e.g. tsconfig/tsconfig.app.json), unplugin-dts may fail to collect the right source files. This commonly surfaces as lots of TS2307 (“Cannot find module…”) during type generation, missing declarations, or downstream bundling failures.

The root cause is a base-directory mismatch:

• TypeScript resolves include / exclude / files patterns relative to the tsconfig file directory.
• unplugin-dts builds a Rollup-style filter via createFilter(..., { resolve: root }), which resolves globs relative to the plugin root.

If we pass tsconfig-relative globs directly into a filter that resolves relative to root, the filter can exclude valid project files, leading to an incomplete program and broken declaration output.

What changed

• In packages/unplugin-dts/src/core/runtime.ts, adjust computeGlobs() to convert tsconfig-provided patterns from tsconfig-dir relative to root relative before passing them to createFilter.
  • Compute relativeRoot = relative(root, dirname(configPath))
  • For non-absolute patterns, prefix with relativeRoot and normalize the result

Validation

• Updated examples/vue-vite to use a root solution tsconfig.json with references pointing to tsconfig/tsconfig.app.json (no behavior change intended).
• Verified:
  • pnpm -C examples/vue-vite build
  • pnpm -C examples/vue-vite tsc
  • pnpm -C packages/unplugin-dts test (Vitest)