Vite 6 + React Router 7 - Type PluginOption[] is not assignable to type PluginOption

[stevensacks]

React Router 7 works fine with Vite 6, but Vitest has a TS error in the editor. Running vitest works, but TypeScript is complaining.

import react from '@vitejs/plugin-react';
import tsconfigPaths from 'vite-tsconfig-paths';
import {defineConfig} from 'vitest/config';

export default defineConfig({
  plugins: [react(), tsconfigPaths()],
            ~~~~~.   ~~~~~~~~~~~~~

TS2769: No overload matches this call.
The last overload gave the following error.
Type PluginOption[] is not assignable to type PluginOption

I tried deleting node_modules and package-lock.json and reinstalling, and also tried running dedupe, but it didn't fix it. Here's the npm ls vite.

├─┬ @react-router/dev@7.0.2
│ ├─┬ vite-node@1.6.0
│ │ └── vite@5.4.11
│ └── vite@6.0.3 deduped invalid: "^5.1.0" from node_modules/@react-router/dev
├─┬ @storybook/react-vite@8.4.7
│ ├─┬ @joshwooding/vite-plugin-react-docgen-typescript@0.4.2
│ │ └── vite@6.0.3 deduped invalid: "^5.1.0" from node_modules/@react-router/dev
│ ├─┬ @storybook/builder-vite@8.4.7
│ │ └── vite@6.0.3 deduped invalid: "^5.1.0" from node_modules/@react-router/dev
│ └── vite@6.0.3 deduped invalid: "^5.1.0" from node_modules/@react-router/dev
├─┬ @vitejs/plugin-react@4.3.4
│ └── vite@6.0.3 deduped invalid: "^5.1.0" from node_modules/@react-router/dev
├─┬ react-router-devtools@1.0.5
│ └── vite@6.0.3 deduped invalid: "^5.1.0" from node_modules/@react-router/dev
├─┬ vite-tsconfig-paths@5.1.4
│ └── vite@6.0.3 deduped invalid: "^5.1.0" from node_modules/@react-router/dev
├── vite@6.0.3 invalid: "^5.1.0" from node_modules/@react-router/dev
└─┬ vitest@2.1.8
  ├─┬ @vitest/mocker@2.1.8
  │ └── vite@6.0.3 deduped invalid: "^5.1.0" from node_modules/@react-router/dev, "^5.0.0" from node_modules/@vitest/mocker
  ├─┬ vite-node@2.1.8
  │ └── vite@5.4.11 deduped
  └── vite@5.4.11

Any ideas how to resolve?

[hi-ogawa]

Vitest 2 doesn't allow Vite 6. You can try beta to use Vite 6 https://github.com/vitest-dev/vitest/releases/tag/v3.0.0-beta.2