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\n \"vite-bundle-analyzer\"\n

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\n \n \n \n \n \n \n \n Awesome\n \n

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\n\n# Vite Bundle Analyzer\n\nA bundle analyzer for Vite, Rollup, and Rolldown that visualizes bundle size with an interactive treemap.\n\n> [!WARNING]\n> Vite enables minification by default. The parsed size may appear larger than actual size because bundle info from Rollup isn't compressed. Rolldown support is experimental.\n\n## Installation\n\n```bash\nnpm install vite-bundle-analyzer -D\n# or\nyarn add vite-bundle-analyzer -D\n# or\npnpm add vite-bundle-analyzer -D\n```\n\n## Usage\n\nPlugins only work during the build phase.\n\n### Vite\n\n```js\nimport { defineConfig } from 'vite'\nimport { analyzer } from 'vite-bundle-analyzer'\n\nexport default defineConfig({\n plugins: [\n analyzer()\n ]\n})\n```\n\n### Rollup\n\n```js\nimport { adapter } from 'vite-bundle-analyzer'\nimport { analyzer } from 'vite-bundle-analyzer'\n\nexport default {\n plugins: [\n adapter(analyzer())\n ]\n}\n```\n\n### Rolldown Plugin (Experimental)\n\n```js\nimport { unstableRolldownAdapter } from 'vite-bundle-analyzer'\nimport { analyzer } from 'vite-bundle-analyzer'\n\nexport default {\n plugins: [\n unstableRolldownAdapter(analyzer())\n ]\n}\n```\n\n## Configuration\n\n| Option | Type | Default | Description |\n| --------------- | --------------------------------------------- | ------------------------ | ------------------------------------------- |\n| `analyzerMode` | `'server' \\| 'static' \\| 'json' \\| function` | `'server'` | Analysis output mode |\n| `fileName` | `string \\| function` | `'stats'` | Output filename (without extension) |\n| `reportTitle` | `string` | `'Vite Bundle Analyzer'` | Report page title |\n| `gzipOptions` | `Record` | `{}` | Gzip compression options (see zlib module) |\n| `brotliOptions` | `Record` | `{}` | Brotli compression options |\n| `analyzerPort` | `number \\| 'auto'` | `8888` | Server port |\n| `openAnalyzer` | `boolean` | `true` | Auto-open browser (server/static mode only) |\n| `defaultSizes` | `'stat' \\| 'gzip' \\| 'brotli'` | `'stat'` | Default size metric |\n| `summary` | `boolean` | `true` | Show summary in console |\n| `enabled` | `boolean` | `true` | Enable/disable plugin |\n| `include` | `string \\| RegExp \\| Array` | `[]` | Include patterns |\n| `exclude` | `string \\| RegExp \\| Array` | `[]` | Exclude patterns |\n| `pathFormatter` | `(path: string, defaultWd: string) => string` | `undefined` | Formatting Paths |\n\n## CLI\n\n```bash\nnpx vite-bundle-analyzer\n\n# With options\nnpx vite-bundle-analyzer --help\n\n# If you're using rolldown-vite pls using the following command\n\nnpx vite-bundle-analyzer -e=rolldown-vite\n```\n\n## Common Issues\n\n### Empty Chunk Sizes\n\nIf chunk sizes appear empty, check for plugins that break source maps (e.g., `@vitejs/plugin-legacy`). The analyzer relies on source maps for accurate size calculation.\n\n### Vite-based Frameworks\n\nFor frameworks built on Vite (VitePress, Remix, Qwik), use `analyzerMode: 'server'` for accurate results due to multiple build instances.\n\n### Static Mode Without Server\n\nWhen `analyzerMode: 'static'` and `openAnalyzer: false`, no development server is created.\n\n## API Integration\n\n```ts\nimport { SSE, createServer, injectHTMLTag, openBrowser, renderView } from 'vite-bundle-analyzer'\n\n// Create custom server\nconst server = createServer()\nserver.get('/', async (c) => {\n const html = await renderView(data, { title: 'Custom Analyzer', mode: 'stat' })\n c.res.writeHead(200, { 'Content-Type': 'text/html' })\n c.res.write(html)\n c.res.end()\n})\nserver.listen(3000)\n```\n\n## Debug\n\n```bash\n# Vite\nvite build --debug\n\n# Environment variable\nANALYZE_DEBUG=true npm run build\n```\n\n## Related\n\n- [ROLLDOWN](./ROLLDOWN.md)\n- [Q&A](./Q&A.md)\n- [CHANGELOG](./CHANGELOG.md)\n\n## Contributors\n\n

\n \n \"Kanno\"\n \n \n \"Aleksandr\n \n \n \"mengdaoshizhongxinyang\"\n \n

\n\n## Sponsors\n\n

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\n\n## Credits\n\n- [Geist UI](https://github.com/geist-org/geist-ui)\n- The friend who proposed this idea.\n- All contributors and sponsors\n\n## License\n\n[MIT](./LICENSE)\n","readmeFilename":"README.md"}