Error when starting caused by plugins.

I can not start with npm run vite, the console output is like:

> node ./bin/vite

running: vite --config X:\A\src\node_modules\_vue-cli-plugin-vite@1.0.0-rc.3@vue-cli-plugin-vite\config\index.ts
error when starting dev server:
TypeError: Cannot read property 'apply' of undefined
    at X:\A\src\node_modules\_vite@2.0.5@vite\dist\node\chunks\dep-e0f09032.js:48165:19
    at Array.filter (<anonymous>)
    at resolveConfig (X:\A\src\node_modules\_vite@2.0.5@vite\dist\node\chunks\dep-e0f09032.js:48164:58)
    at processTicksAndRejections (internal/process/task_queues.js:93:5)
    at async createServer (X:\A\src\node_modules\_vite@2.0.5@vite\dist\node\chunks\dep-e0f09032.js:68144:20)
    at async CAC.<anonymous> (X:\A\src\node_modules\_vite@2.0.5@vite\dist\node\cli.js:14027:24)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! mjapp@2.5.0 vite: `node ./bin/vite`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the mjapp@2.5.0 vite script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     D:\Programs\nodejs\global\cache\_logs\2021-04-19T17_08_49_381Z-debug.log

By looking at the ts codes, it is caused by these lines in node_modules\_vue-cli-plugin-vite@1.0.0-rc.3@vue-cli-plugin-vite\config\index.ts line 45-48:

export default defineConfig({
  plugins: [
    envCompatible(),
    // auto infer pages
    htmlTemplate({ pages: vueConfig.pages || {} }),
    vueCli(),
    createVuePlugin(viteOptions.vitePluginVue2Options),
    useMPA
      ? mpa()
      : undefined,
    ...extraPlugins,
  ],
  optimizeDeps: viteOptions.optimizeDeps,
})

When this is not mpa, it will add an undefined to plugins for user config. Thus, the flat().filter() won’t deal it properly because it can not access plugins for undefined.

[boxsnake]

maybe in bin/vite use npx vite instead of vite directly? try it

I changed the vite to npx vite in cross-spawn, and it works. Thanks.

[IndexXuan]

maybe in bin/vite use npx vite instead of vite directly? try it