webpack-config-with-manual.js

  new SWPrecacheWebpackPlugin({
    mergeStaticsConfig: true,
    filename: "service-worker.js",
    importScripts: ["../sw-manual.js"],  // <------------------- new
    staticFileGlobs: [
      "static/bootstrap/css/bootstrap-booklist-build.css",
      "static/fontawesome/css/font-awesome-booklist-build.css",
      "static/fontawesome/fonts/fontawesome-webfont.woff2",
      "static/main-icon2.png",
      "util/babelHelpers.min.js",
      "offline.htm"  // <------------------- new
    ],
    ignoreUrlParametersMatching: /./,
    stripPrefixMulti: {
      "static/": "react-redux/static/",
      "util/": "react-redux/util/",
      "offline.htm": "react-redux/offline.htm"
    },
    runtimeCaching: [
      getCache({ pattern: /^https:\/\/images-na.ssl-images-amazon.com/, name: "amazon-images1" }),
      getCache({ pattern: /^https:\/\/ecx.images-amazon.com/, name: "amazon-images2" }),
      getCache({ pattern: /^https:\/\/s3.amazonaws.com\/my-library-cover-uploads/, name: "local-images1" }),
      getCache({ pattern: /book\/searchBooks/, name: "book-search", expires: 60 * 7 }), //7 minutes
      getCache({ pattern: /book\/loadDetails/, name: "book-details" })
    ]
  })