typescript - 如何使用 WorkBox 禁用缓存服务人员

问题描述

我正在构建一个具有 service-work.ts 文件和 serviceWorkerRegistration.ts 的渐进式 Web 应用程序。目前，我的网站已缓存，但每当我部署更新时，网站仍会显示已过时的缓存版本。

我在此链接上关注了第二个响应：PWA 何时以及如何更新自身？这是const version = '1.1.0-beta'在 service-worker.ts 文件中包含一行并更改字符串，如果我希望它更新但它仍然不起作用。

我怀疑我的服务人员也被缓存并查看了此链接：如何清除服务人员的缓存？但我不知道在哪里包含代码，因为它看起来与我拥有的文件完全不同。

非常感谢任何可以帮助我解决此问题的帮助，尤其是仍然保留旨在加快加载时间的缓存策略的好处。

以下是我的 service-worker.ts 文件：

import { clientsClaim } from 'workbox-core'
import { ExpirationPlugin } from 'workbox-expiration'
import { precacheAndRoute, createHandlerBoundToURL } from 'workbox-precaching'
import { registerRoute } from 'workbox-routing'
import { StaleWhileRevalidate } from 'workbox-strategies'

declare const self: ServiceWorkerGlobalScope

clientsClaim()

// Precache all of the assets generated by your build process.
// Their URLs are injected into the manifest variable below.
// This variable must be present somewhere in your service worker file,
// even if you decide not to use precaching. See https://cra.link/PWA
precacheAndRoute(self.__WB_MANIFEST)

// Changing version number causes browser to re-cache all files.
const version = '1.1.0-beta'

// Set up App Shell-style routing, so that all navigation requests
// are fulfilled with your index.html shell. Learn more at
// https://developers.google.com/web/fundamentals/architecture/app-shell
const fileExtensionRegexp = new RegExp('/[^/?]+\\.[^/]+$')
registerRoute(
  // Return false to exempt requests from being fulfilled by index.html.
  ({ request, url }: { request: Request; url: URL }) => {
    // If this isn't a navigation, skip.
    if (request.mode !== 'navigate') {
      return false
    }

    // If this is a URL that starts with /_, skip.
    if (url.pathname.startsWith('/_')) {
      return false
    }

    // If this looks like a URL for a resource, because it contains
    // a file extension, skip.
    if (url.pathname.match(fileExtensionRegexp)) {
      return false
    }

    // Return true to signal that we want to use the handler.
    return true
  },
  createHandlerBoundToURL(process.env.PUBLIC_URL + '/index.html'),
)

// An example runtime caching route for requests that aren't handled by the
// precache, in this case same-origin .png requests like those from in public/
registerRoute(
  // Add in any other file extensions or routing criteria as needed.
  ({ url }) => url.origin === self.location.origin && url.pathname.endsWith('.png'),
  // Customize this strategy as needed, e.g., by changing to CacheFirst.
  new StaleWhileRevalidate({
    cacheName: 'images',
    plugins: [
      // Ensure that once this runtime cache reaches a maximum size the
      // least-recently used images are removed.
      new ExpirationPlugin({ maxEntries: 50 }),
    ],
  }),
)

// This allows the web app to trigger skipWaiting via
// registration.waiting.postMessage({type: 'SKIP_WAITING'})
self.addEventListener('message', (event) => {
  if (event.data && event.data.type === 'SKIP_WAITING') {
    self.skipWaiting()
  }
})

如有必要，这是我的 serviceWorkerRegistration.ts 文件：

const isLocalhost = Boolean(
  window.location.hostname === 'localhost' ||
    // [::1] is the IPv6 localhost address.
    window.location.hostname === '[::1]' ||
    // 127.0.0.0/8 are considered localhost for IPv4.
    window.location.hostname.match(/^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/),
)

type Config = {
  onSuccess?: (registration: ServiceWorkerRegistration) => void
  onUpdate?: (registration: ServiceWorkerRegistration) => void
}

export function register(config?: Config) {
  if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
    // The URL constructor is available in all browsers that support SW.
    const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href)
    if (publicUrl.origin !== window.location.origin) {
      // Our service worker won't work if PUBLIC_URL is on a different origin
      // from what our page is served on. This might happen if a CDN is used to
      // serve assets; see https://github.com/facebook/create-react-app/issues/2374
      return
    }

    window.addEventListener('load', () => {
      const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`

      if (isLocalhost) {
        // This is running on localhost. Let's check if a service worker still exists or not.
        checkValidServiceWorker(swUrl, config)

        // Add some additional logging to localhost, pointing developers to the
        // service worker/PWA documentation.
        navigator.serviceWorker.ready.then(() => {
          console.log(
            'This web app is being served cache-first by a service ' +
              'worker. To learn more, visit https://cra.link/PWA',
          )
        })
      } else {
        // Is not localhost. Just register service worker
        registerValidSW(swUrl, config)
      }
    })
  }
}

function registerValidSW(swUrl: string, config?: Config) {
  navigator.serviceWorker
    .register(swUrl)
    .then((registration) => {
      registration.onupdatefound = () => {
        const installingWorker = registration.installing
        if (installingWorker == null) {
          return
        }
        installingWorker.onstatechange = () => {
          if (installingWorker.state === 'installed') {
            if (navigator.serviceWorker.controller) {
              // At this point, the updated precached content has been fetched,
              // but the previous service worker will still serve the older
              // content until all client tabs are closed.
              console.log(
                'New content is available and will be used when all ' +
                  'tabs for this page are closed. See https://cra.link/PWA.',
              )

              // Execute callback
              if (config && config.onUpdate) {
                config.onUpdate(registration)
              }
            } else {
              // At this point, everything has been precached.
              // It's the perfect time to display a
              // "Content is cached for offline use." message.
              console.log('Content is cached for offline use.')

              // Execute callback
              if (config && config.onSuccess) {
                config.onSuccess(registration)
              }
            }
          }
        }
      }
    })
    .catch((error) => {
      console.error('Error during service worker registration:', error)
    })
}

function checkValidServiceWorker(swUrl: string, config?: Config) {
  // Check if the service worker can be found. If it can't reload the page.
  fetch(swUrl, {
    headers: { 'Service-Worker': 'script' },
  })
    .then((response) => {
      // Ensure service worker exists, and that we really are getting a JS file.
      const contentType = response.headers.get('content-type')
      if (response.status === 404 || (contentType != null && contentType.indexOf('javascript') === -1)) {
        // No service worker found. Probably a different app. Reload the page.
        navigator.serviceWorker.ready.then((registration) => {
          registration.unregister().then(() => {
            window.location.reload()
          })
        })
      } else {
        // Service worker found. Proceed as normal.
        registerValidSW(swUrl, config)
      }
    })
    .catch(() => {
      console.log('No internet connection found. App is running in offline mode.')
    })
}

export function unregister() {
  if ('serviceWorker' in navigator) {
    navigator.serviceWorker.ready
      .then((registration) => {
        registration.unregister()
      })
      .catch((error) => {
        console.error(error.message)
      })
  }
}

标签： typescriptcachingprogressive-web-appsservice-workerworkbox

typescript - 如何使用 WorkBox 禁用缓存服务人员

问题描述

解决方案

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