sw-precache-config.js

// Additional documentation
// https://github.com/facebookincubator/create-react-app/blob/master/packages/react-scripts/config/webpack.config.prod.js#L325
// https://github.com/GoogleChromeLabs/sw-precache#options-parameter
module.exports = {
  // a directory should be the same as "reactSnap.destination",
  // which default value is `build`
  staticFileGlobs: [
    "build/static/css/*.css",
    "build/static/js/*.js",
    "build/shell.html",
    "build/index.html"
  ],
  stripPrefix: "build",
  publicPath: ".",
  // there is "reactSnap.include": ["/shell.html"] in package.json
  navigateFallback: "/shell.html",
  // Ignores URLs starting from /__ (useful for Firebase):
  // https://github.com/facebookincubator/create-react-app/issues/2237#issuecomment-302693219
  navigateFallbackWhitelist: [/^(?!\/__).*/],
  // By default, a cache-busting query parameter is appended to requests
  // used to populate the caches, to ensure the responses are fresh.
  // If a URL is already hashed by Webpack, then there is no concern
  // about it being stale, and the cache-busting can be skipped.
  dontCacheBustUrlsMatching: /\.\w{8}\./,
  // configuration specific to this experiment
  runtimeCaching: [
    {
      urlPattern: /api/,
      handler: "fastest"
    }
  ]
};