1  import { defineConfig, PluginOption } from 'vite'
 2  import tsconfigPaths from 'vite-tsconfig-paths'
 3  import react from '@vitejs/plugin-react-swc'
 4  
 5  
 6  
 7  
 8  // https://vitejs.dev/config/
 9  export default defineConfig({
10    plugins: [react(), tsconfigPaths(), preloadAllScripts()],
11    server: {
12      port: 3000,
13      proxy: {
14        '/api': 'http://127.0.0.1:8000'
15        // '/api': 'https://demo.evidentlyai.com'
16      }
17    },
18    build: {
19      rollupOptions: {
20        output: {
21          assetFileNames: (assetInfo) => {
22            const fileName = assetInfo.names?.[0] || 'unknown'
23            let [extType] = fileName.split('.').reverse()
24  
25            if (/png|jpe?g|svg|gif|tiff|bmp|ico/i.test(extType)) {
26              // don't hash images
27              return `static/img/[name][extname]`
28            }
29            // hash everything else (like css)
30            return `static/${extType}/[name]-[hash][extname]`
31          },
32          chunkFileNames: 'static/js/[name]-[hash].js',
33          entryFileNames: 'static/js/[name]-[hash].js'
34        }
35      }
36    }
37  })
38  
39  
40  function preloadAllScripts() {
41    const [headClosedTag, tabs4, tabs2] = ['</head>', '    ', '  ']
42  
43    return {
44      name: 'insert modulepreload additional js chunk link tags',
45      transformIndexHtml: (html, ctx) => {
46        if (!ctx.bundle) {
47          return
48        }
49  
50        const scriptNames = Object.values(ctx.bundle)
51          .map(({ type, fileName }) =>
52            type === 'asset' || html.includes(fileName)
53              ? // return `false` to skip file if
54                // file is css/img etc, or if
55                // this file already in html
56                false
57              : fileName
58          )
59          .filter((e): e is string => typeof e === 'string')
60  
61        const modulepreloadLinks = scriptNames
62          .map((scriptName) => `${tabs4}<link rel="modulepreload" crossorigin href="/${scriptName}">`)
63          .join('\n')
64  
65        const additionalLinks = `\n${tabs4}${'<!-- Preload all additional js chunks -->'}\n${modulepreloadLinks}\n${tabs2}`
66  
67        return html.replace(headClosedTag, `${additionalLinks}${headClosedTag}`)
68      }
69    } satisfies PluginOption
70  }