`@vitest/browser-playwright` types incompatible with `defineConfig` due to bundled vitest copy

[kotkoroid]

Describe the bug

Configuring Vitest browser mode through vite-plus's defineConfig fails to type-check when the provider is set to playwright() imported from @vitest/browser-playwright.

@voidzero-dev/vite-plus-test bundles its own copy of vitest internals (currently 4.1.5) inside its dist/, and declares @vitest/browser-playwright only as a devDependency rather than a peerDependency. When a downstream project installs @vitest/browser-playwright directly (e.g. via bun add), two structurally-identical but nominally-distinct copies of the vitest type tree end up loaded. TypeScript trips on private fields like _clearScreenPending and reports a long incompatibility chain ending in Types have separate declarations of a private property '_clearScreenPending'.

Runtime is fine — tests execute and pass. The bug is purely a types/packaging mismatch.

Reproduction

https://github.com/kotkoroid/vite-plus-vitest-browser-types-repro

Steps to reproduce

bun run check runs tsc --noEmit and produces the type error chain ending in:

Types have separate declarations of a private property '_clearScreenPending'.

bun run test succeeds — the failure is purely at the type level.

System Info

VITE+ - The Unified Toolchain for the Web

vp v0.0.0

Local vite-plus:
  vite-plus  v0.1.20

Tools:
  vite             v8.0.10
  rolldown         v1.0.0-rc.17
  vitest           v4.1.5
  oxfmt            v0.46.0
  oxlint           v1.61.0
  oxlint-tsgolint  v0.22.0
  tsdown           v0.21.10

Used Package Manager

bun

Logs

Validations

• Read the Contributing Guidelines.
• Check that there isn't already an issue for the same bug.
• Confirm this is a Vite+ issue and not an upstream issue (Vite, Vitest, tsdown, Rolldown, or Oxc).
• The provided reproduction is a minimal reproducible example.

[fengmk2]

@kotkoroid you should import from vite-plus/test, I send a demo pr https://github.com/kotkoroid/vite-plus-vitest-browser-types-repro/pull/1/changes