Prism is not defined

[Shinigami92]

Describe the bug

When using lazy imports with e.g. vue-router and the component includes Prism, at production an error is thrown: Prism is not defined

With vite dev everything is working fine.

Vite Land: https://discord.com/channels/804011606160703521/814182556068085760/824219218617827359

Reproduction

https://github.com/Shinigami92/vite-repro-prism-is-not-defined

Workaround: https://github.com/Shinigami92/vite-repro-prism-is-not-defined/compare/workaround-1

System Info

Output of npx envinfo --system --npmPackages vite,@vitejs/plugin-vue --binaries --browsers:

  System:
    OS: Linux 5.10 Arch Linux
    CPU: (28) x64 Intel(R) Core(TM) i9-10940X CPU @ 3.30GHz
    Memory: 46.70 GB / 62.49 GB
    Container: Yes
    Shell: 5.8 - /usr/bin/zsh
  Binaries:
    Node: 15.6.0 - ~/.nvm/versions/node/v15.6.0/bin/node
    Yarn: 1.22.10 - /usr/bin/yarn
    npm: 7.4.0 - ~/.nvm/versions/node/v15.6.0/bin/npm
  npmPackages:
    @vitejs/plugin-vue: ~1.1.5 => 1.1.5 
    vite: ~2.1.2 => 2.1.2

Used package manager: yarn

Logs

yarn run v1.22.10
warning package.json: No license field
$ vite build --debug
  vite:config bundled config file loaded in 176ms +0ms
  vite:config using resolved config: {
  vite:config   plugins: [
  vite:config     'alias',
  vite:config     'vite:dynamic-import-polyfill',
  vite:config     'vite:resolve',
  vite:config     'vite:html',
  vite:config     'vite:css',
  vite:config     'vite:esbuild',
  vite:config     'vite:json',
  vite:config     'vite:wasm',
  vite:config     'vite:worker',
  vite:config     'vite:asset',
  vite:config     'vite-plugin-vue2',
  vite:config     'vite:define',
  vite:config     'vite:css-post',
  vite:config     'vite:build-html',
  vite:config     'commonjs',
  vite:config     'vite:data-uri',
  vite:config     'rollup-plugin-dynamic-import-variables',
  vite:config     'vite:import-analysis',
  vite:config     'vite:esbuild-transpile',
  vite:config     'vite:terser',
  vite:config     'vite:reporter'
  vite:config   ],
  vite:config   resolve: { dedupe: undefined, alias: [ [Object], [Object] ] },
  vite:config   build: {
  vite:config     target: [ 'chrome63' ],
  vite:config     polyfillDynamicImport: true,
  vite:config     outDir: 'dist',
  vite:config     assetsDir: 'static',
  vite:config     assetsInlineLimit: 4096,
  vite:config     cssCodeSplit: true,
  vite:config     sourcemap: false,
  vite:config     rollupOptions: {},
  vite:config     commonjsOptions: { include: [Array], extensions: [Array] },
  vite:config     minify: 'terser',
  vite:config     terserOptions: {},
  vite:config     cleanCssOptions: {},
  vite:config     write: true,
  vite:config     emptyOutDir: null,
  vite:config     manifest: false,
  vite:config     lib: false,
  vite:config     ssr: false,
  vite:config     ssrManifest: false,
  vite:config     brotliSize: true,
  vite:config     chunkSizeWarningLimit: 500
  vite:config   },
  vite:config   server: { port: 18080, proxy: { '/api/v3': [Object] } },
  vite:config   configFile: '/home/shinigami/OpenSource/vite-repro-prism-is-not-defined/vite.config.ts',
  vite:config   inlineConfig: {
  vite:config     root: undefined,
  vite:config     base: undefined,
  vite:config     mode: undefined,
  vite:config     configFile: undefined,
  vite:config     logLevel: undefined,
  vite:config     clearScreen: undefined,
  vite:config     build: {}
  vite:config   },
  vite:config   root: '/home/shinigami/OpenSource/vite-repro-prism-is-not-defined',
  vite:config   base: '/',
  vite:config   publicDir: '/home/shinigami/OpenSource/vite-repro-prism-is-not-defined/public',
  vite:config   command: 'build',
  vite:config   mode: 'production',
  vite:config   isProduction: true,
  vite:config   optimizeCacheDir: '/home/shinigami/OpenSource/vite-repro-prism-is-not-defined/node_modules/.vite',
  vite:config   env: { BASE_URL: '/', MODE: 'production', DEV: false, PROD: true },
  vite:config   assetsInclude: [Function: assetsInclude],
  vite:config   logger: {
  vite:config     hasWarned: false,
  vite:config     info: [Function: info],
  vite:config     warn: [Function: warn],
  vite:config     error: [Function: error],
  vite:config     clearScreen: [Function: clearScreen]
  vite:config   },
  vite:config   createResolver: [Function: createResolver]
  vite:config } +5ms
vite v2.1.2 building for production...
✓ 23 modules transformed.
dist/index.html                  0.47kb
dist/static/index.859e503a.css   519.62kb / brotli: skipped (large chunk)
dist/static/MyView.643b43c0.js   1.07kb / brotli: 0.50kb
dist/static/index.fe1f5624.js    18.94kb / brotli: 6.71kb
dist/static/vendor.26b75172.js   764.11kb / brotli: skipped (large chunk)

(!) Some chunks are larger than 500kb after minification. Consider:
- Using dynamic import() to code-split the application
- Use build.rollupOptions.output.manualChunks to improve chunking: https://rollupjs.org/guide/en/#outputmanualchunks
- Adjust chunk size limit for this warning via build.chunkSizeWarningLimit.
Done in 7.59s.

Uncaught ReferenceError: Prism is not defined
    at vendor.26b75172.js:1
  (anonymous) @ vendor.26b75172.js:1

---

Before submitting the issue, please make sure you do the following

• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Provide a description in this issue that describes the bug.
• Make sure this is a Vite issue and not a framework-specific issue. For example, if it's a Vue SFC related bug, it should likely be reported to https://github.com/vuejs/vue-next instead.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.