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Workbox 让我发疯。当我的应用程序启动时,所有预缓存的路由都返回 http404,因为工作箱 InjectManifest 插件似乎将“自动”添加到所有缓存的 url。我必须知道它为什么这样做。我尝试过重新安装 npm 包、以隐身模式运行、清除所有缓存等。

我使用“webpack-dev-server --mode development --open”运行应用程序,我收到以下警告,这可能是问题的一部分:

WARNING in InjectManifest has been called multiple times, perhaps due to running webpack in --watch mode. The precache manifest generated after the first call may be inaccurate! Please see https://github.com/GoogleChrome/workbox/issues/1790 for more information.

我不知道为什么会出现这个错误,因为我在 webpack 配置中设置了 watch:false。

请注意所有路径如何在前面有“auto”并返回 http404。请注意,我清除了 Chrome 的“应用程序”选项卡上的所有缓存。同样的情况也发生在隐身标签中。

自动路径

当打开一个新标签并删除“自动”时,它工作正常:

没有自动工作正常

带有注入清单的 service worker 文件显示“auto”是 url 的一部分:

在此处输入图像描述

有没有人见过这个?我开始考虑从头开始编写服务工作者并放弃工作箱,但如果我能让工作箱正常工作,我显然更愿意使用工作箱。

编码:

我使用 workbox-webpack-plugin 在我的 service worker 中注入预缓存清单,如下所示:

import {precacheAndRoute} from 'workbox-precaching';
import {registerRoute} from 'workbox-routing';
import {CacheFirst} from 'workbox-strategies';

// Use the imported Workbox libraries to implement caching,
// routing, and other logic:
precacheAndRoute(self.__WB_MANIFEST || []);

registerRoute(
    ({request}) => request.destination === 'image',
    new CacheFirst({cacheName: 'images'}),
);

我的 webpack.config.js 如下所示,没什么特别的:

const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const {InjectManifest} = require('workbox-webpack-plugin');

module.exports = {
    watch: false,
    entry: path.resolve(__dirname, './src/index.js'),
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: '[name].[contenthash].js',
    },
    module: {
        rules: [{test: /\.js$/, exclude: /node_modules/, loader: 'babel-loader'}, {
            test: /\.(png|svg|jpg|gif)$/,
            use: [
                'file-loader',
            ],
        }]
    },
    plugins: [
        new HtmlWebpackPlugin({
            title: 'Prototype webpack + react + workbox usage',
            template: './src/index.html',
            filename: './index.html',
            'meta': {
                'viewport': 'width=device-width, initial-scale=1.0',
                'charset': 'UTF-8'
            }
        }),
        new InjectManifest({
            swSrc: './service-worker.js',
            swDest: './workbox-sw-generated.js',
        })
    ]
};

我的 index.html 也很简单:

<!DOCTYPE html>
<html lang="en">

<head>
    <title><%= htmlWebpackPlugin.options.title %></title>
    <script>
        if ('serviceWorker' in navigator) {
            window.addEventListener('load', () => {
              navigator.serviceWorker.register('/workbox-sw-generated.js')
            });
        }
    </script>
</head>

<body>
    <section id="index"></section>
</body>

</html>

这是我的 package.json:

{
    "name": "simple_webpack_boilerplate",
    "version": "1.0.0",
    "description": "A ready to use simple webpack boilerplate for react",
    "main": "src/index.js",
    "scripts": {
        "start": "webpack-dev-server --mode development --open",
        "build": "webpack --mode production"
    },
    "author": "Willem",
    "license": "ISC",
    "devDependencies": {
        "@babel/core": "7.11.4",
        "@babel/preset-env": "7.11.0",
        "@babel/preset-react": "7.10.4",
        "babel-loader": "8.1.0",
        "file-loader": "^6.1.1",
        "html-webpack-plugin": "4.4.1",
        "terser-webpack-plugin": "^4.1.0",
        "webpack": "^5.0.0",
        "webpack-cli": "^3.3.12",
        "webpack-dev-server": "3.11.0",
        "workbox-webpack-plugin": "^5.1.4"
    },
    "dependencies": {
        "lodash": "^4.17.20",
        "react": "16.13.1",
        "react-dom": "16.13.1",
        "react-router-dom": "^5.2.0"
    }
}
4

1 回答 1

3

这里的问题是 workbox-webpack-plugin v5 与刚刚发布的 webpack v5 不兼容。解决方案是改用 webpack v4。

于 2020-10-15T13:10:30.813 回答