102 lines
2.8 KiB
JavaScript
102 lines
2.8 KiB
JavaScript
/**
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* Post-build prerendering script.
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* Starts a local server from dist/, visits each route with Puppeteer,
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* and saves the fully-rendered HTML so crawlers see real content.
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*
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* Usage: node prerender.js (run after `vite build`)
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*/
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import { createServer } from 'http'
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import { readFileSync, writeFileSync, mkdirSync, existsSync } from 'fs'
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import { join, dirname } from 'path'
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import { fileURLToPath } from 'url'
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import puppeteer from 'puppeteer'
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const __dirname = dirname(fileURLToPath(import.meta.url))
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const DIST = join(__dirname, 'dist')
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const PORT = 4173
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const ROUTES = ['/', '/technical', '/imprint', '/privacy-policy']
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/** Minimal static file server that falls back to index.html (SPA). */
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function startServer() {
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const mimeTypes = {
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'.html': 'text/html',
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'.js': 'application/javascript',
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'.css': 'text/css',
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'.json': 'application/json',
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'.png': 'image/png',
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'.jpg': 'image/jpeg',
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'.svg': 'image/svg+xml',
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'.pdf': 'application/pdf',
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'.woff2': 'font/woff2',
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'.woff': 'font/woff',
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}
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const server = createServer((req, res) => {
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let filePath = join(DIST, req.url === '/' ? '/index.html' : req.url)
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if (!existsSync(filePath) || !filePath.includes('.')) {
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filePath = join(DIST, 'index.html')
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}
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const ext = '.' + filePath.split('.').pop()
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const contentType = mimeTypes[ext] || 'application/octet-stream'
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try {
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const content = readFileSync(filePath)
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res.writeHead(200, { 'Content-Type': contentType })
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res.end(content)
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} catch {
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res.writeHead(404)
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res.end('Not found')
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}
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})
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return new Promise((resolve) => {
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server.listen(PORT, () => {
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console.log(` Server running on http://localhost:${PORT}`)
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resolve(server)
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})
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})
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}
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async function prerender() {
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console.log('\n🔍 Prerendering routes...\n')
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const server = await startServer()
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const browser = await puppeteer.launch({ headless: true })
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for (const route of ROUTES) {
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const page = await browser.newPage()
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const url = `http://localhost:${PORT}${route}`
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console.log(` Rendering ${route} ...`)
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await page.goto(url, { waitUntil: 'networkidle0', timeout: 15000 })
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// Wait a bit for React to finish any async rendering
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await new Promise((r) => setTimeout(r, 1500))
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const html = await page.content()
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await page.close()
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// Write to dist/<route>/index.html
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const outDir = route === '/' ? DIST : join(DIST, route)
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if (!existsSync(outDir)) {
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mkdirSync(outDir, { recursive: true })
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}
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const outFile = join(outDir, 'index.html')
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writeFileSync(outFile, html, 'utf-8')
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console.log(` ✓ Saved ${outFile.replace(DIST, 'dist')}`)
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}
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await browser.close()
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server.close()
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console.log('\n✅ Prerendering complete!\n')
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}
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prerender().catch((err) => {
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console.error('Prerendering failed:', err)
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process.exit(1)
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})
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