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server.js
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server.js
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// @ts-check
const fs = require('fs')
const path = require('path')
const express = require('express')
const isTest = process.env.NODE_ENV === 'test' || !!process.env.VITE_TEST_BUILD
async function createServer(
root = process.cwd(),
isProd = process.env.NODE_ENV === 'production'
) {
const resolve = (p) => path.resolve(__dirname, p)
const indexProd = isProd
? fs.readFileSync(resolve('dist/client/index.html'), 'utf-8')
: ''
const manifest = isProd
? // @ts-ignore
require('./dist/client/ssr-manifest.json')
: {}
const app = express()
/**
* @type {import('vite').ViteDevServer}
*/
let vite
if (!isProd) {
vite = await require('vite').createServer({
root,
logLevel: isTest ? 'error' : 'info',
server: {
middlewareMode: true
}
})
// use vite's connect instance as middleware
app.use(vite.middlewares)
} else {
app.use(require('compression')())
app.use(
require('serve-static')(resolve('dist/client'), {
index: false
})
)
}
app.use('*', async (req, res) => {
try {
const url = req.originalUrl
let template, render
if (!isProd) {
// always read fresh template in dev
template = fs.readFileSync(resolve('index.html'), 'utf-8')
template = await vite.transformIndexHtml(url, template)
render = (await vite.ssrLoadModule('/src/entry-server.js')).render
} else {
template = indexProd
render = require('./dist/server/entry-server.js').render
}
const [appHtml, preloadLinks] = await render(url, manifest)
const html = template
.replace(`<!--preload-links-->`, preloadLinks)
.replace(`<!--app-html-->`, appHtml)
res.status(200).set({ 'Content-Type': 'text/html' }).end(html)
} catch (e) {
vite && vite.ssrFixStacktrace(e)
console.log(e.stack)
res.status(500).end(e.stack)
}
})
return { app, vite }
}
if (!isTest) {
createServer().then(({ app }) =>
app.listen(3000, () => {
console.log('http://localhost:3000')
})
)
}