SvelteKit 和适配器节点 -> 生产

Question

很好奇其他人正在使用 SvelteKit 适配器节点构建做什么以将它们投入生产。

例如...

• 提供预压缩文件
• 设置缓存 TTL
• 可能类似于helmet

为适配器定义一个入口点是否更好，例如实现 polka/express/connect 这样的 server.js...

// src/server.js
import { assetsMiddleware, prerenderedMiddleware, kitMiddleware } from '../build/middlewares.js'
import polka from 'polka'
import compression from 'compression'
import helmet from 'helmet'

const app = polka()

app.use(helmet())
app.use(assetsMiddleware, prerenderedMiddleware, kitMiddleware)
app.use(compression())

app.listen(3000)

还是在 hooks.js 的 handler() 方法中实现类似的功能更好？

有兴趣了解人们从构建通过适配器节点到生产的过程。

Answer 1

在检查了 adapter-node 在构建文件夹中生成的内容后，我决定在 svelte.config.jsentryPoint 属性/strong> 到./src/server.mjs，它被添加到构建中。 hooks.js/ts 中的 handle() 方法不允许对静态内容进行任何控制。

在下面的代码中，我为非 https 设置了重定向，并使用头盔来加强安全性。

// /src/server.mjs
import polka from 'polka'
import helmet from 'helmet'
import { assetsMiddleware, prerenderedMiddleware, kitMiddleware } from '../build/middlewares.js'

const { PORT = 3000, DOMAIN } = process.env

const isHttpPerHeroku = (req) =>
    req.headers['x-forwarded-proto'] &&
    req.headers['x-forwarded-proto'] !== 'https'

polka()
  // On Heroku (only), redirect http to https
  .use((req, res, next) => {
    if (isHttpPerHeroku(req)) {
      let url = `${DOMAIN}${req.url}`
      let str = `Redirecting to ${url}`
      res.writeHead(302, {
        Location: url,
        'Content-Type': 'text/plain',
        'Content-Length': str.length
      })
      res.end(str)
    } else next()
  })

  // Apply all but two helmet protections
  .use(helmet({
    contentSecurityPolicy: false, // override below
    referrerPolicy: false // breaks "Sign in with Gooogle"
  }))

  // Set the Content Security Policy on top of defaults
  .use(helmet.contentSecurityPolicy({
    useDefaults: true,
    directives: {
      scriptSrc: [
        "'self'",
        `'unsafe-inline'`,
        'https://accounts.google.com/gsi/',
        'https://assets.braintreegateway.com/web/',
        'https://platform.twitter.com/',
        'https://www.google-analytics.com/',
        'https://www.google.com/recaptcha/',
        'https://www.googletagmanager.com/',
        'https://www.gstatic.com/recaptcha/'
      ],
      connectSrc: [
        "'self'",
        'https://accounts.google.com/gsi/',
        'https://api.sandbox.braintreegateway.com/merchants/',
        'https://api.braintreegateway.com/merchants/',
        'https://origin-analytics-sand.sandbox.braintree-api.com/',
        'https://payments.sandbox.braintree-api.com/',
        'https://payments.braintree-api.com/',
        'https://stats.g.doubleclick.net/',
        'https://www.google-analytics.com/',
        'https://platform.twitter.com/',
        'https://assets.braintreegateway.com/web/',
        'https://www.googletagmanager.com/',
        'https://www.google.com/recaptcha/',
        'https://www.gstatic.com/recaptcha/',
        'https://fonts.gstatic.com/',
        'https://client-analytics.braintreegateway.com/'
      ],
      childSrc: [
        "'self'",
        'https://accounts.google.com/gsi/',
        'https://assets.braintreegateway.com/web/',
        'https://platform.twitter.com/',
        'https://syndication.twitter.com/i/jot',
        'https://www.google.com/maps/',
        'https://www.google.com/recaptcha/'
      ],
      fontSrc: [
        "'self'",
        'https:',
        'data:',
        'https://fonts.gstatic.com'
      ],
      imgSrc: [
        "'self'",
        'data:',
        'https://www.google-analytics.com/',
        'https://www.googletagmanager.com/',
        'www.w3.org/2000/svg',
      ],
      frameSrc: [
        'https://accounts.google.com/gsi/',
        'https://www.google.com/recaptcha/',
        'https://platform.twitter.com/',
        'https://assets.braintreegateway.com/web/',
        'https://www.google.com/maps/',
        'https://syndication.twitter.com/i/jot'
      ],
      workerSrc: [
        "'self'"
      ]
    }
  }))

  // Load the SvelteKit build
  .use(assetsMiddleware, prerenderedMiddleware, kitMiddleware)

  // Listen on the appropriate port
  .listen(PORT)