rollup-plugin-workbox

Rollup plugin that builds a service worker with workbox as part of your rollup build

Usage

This package provides two rollup plugins: one that generates a complete service worker for you and one that generates a list of assets to precache that is injected into a service worker file.

The plugins are implemented as two function in the rollup-plugin-workbox module, named generateSW and injectManifest.

generateSW

Import the generateSW plugin from rollup-plugin-workbox, and add it to your plugins array in your rollup.config.js. The plugin takes a workbox config object, and an optional render function as the second argument.

You can find a detailed list of supported properties for the workbox config object here.

const { generateSW } = require('rollup-plugin-workbox');

module.exports = {
  input: 'main.js',
  output: {
    file: 'dist/bundle.js',
    format: 'esm',
  },
  plugins: [
    generateSW({
      swDest: '/dist/sw.js',
      globDirectory: 'demo/dist/',
    }),
  ],
};

You can also require your workbox-config.js file and pass it to the plugin.

const { generateSW } = require('rollup-plugin-workbox');

const workboxConfig = require('./workbox-config.js');

module.exports = {
  // ...
  plugins: [generateSW(workboxConfig)],
};

You can also customize the console output after workbox has generated your service worker by passing an optional render function as the second argument to the plugin:

const { generateSW } = require('rollup-plugin-workbox');

const workboxConfig = require('./workbox-config.js')

module.exports = {
  // ...
  plugins: [
    generateSW(
      workboxConfig,
      function render({ swDest, count, size }) {
        console.log(
          '????', swDest,
          '#️⃣', count,
          '????', size,
        );
      }),
    )
  ],
};

injectManifest

Import the injectManifest plugin from rollup-plugin-workbox, and add it to your plugins array in your rollup.config.js. The plugin takes a workbox config object, and an optional render function as the second argument.

You can find a detailed list of supported properties for the workbox config object here.

const { injectManifest } = require('rollup-plugin-workbox');

module.exports = {
  input: 'main.js',
  output: {
    file: 'dist/bundle.js',
    format: 'esm',
  },
  plugins: [
    injectManifest({
      swSrc: 'sw.js',
      swDest: '/dist/sw.js',
      globDirectory: 'demo/dist/',
    }),
  ],
};

You can also require your workbox-config.js file and pass it to the plugin.

const { injectManifest } = require('rollup-plugin-workbox');

const workboxConfig = require('./workbox-config.js');

module.exports = {
  // ...
  plugins: [injectManifest(workboxConfig)],
};

You can also customize the console output after workbox has created your service worker by passing an optional render function as the second argument to the plugin:

const { injectManifest } = require('rollup-plugin-workbox');

const workboxConfig = require('./workbox-config.js')

module.exports = {
  // ...
  plugins: [
    injectManifest(
      workboxConfig,
      function render({ swDest, count, size }) {
        console.log(
          '????', swDest,
          '#️⃣', count,
          '????', size,
        );
      }),
    )
  ],
};

A note on the mode config property

The generateSW mode of Workbox supports a mode property, that when set to 'production' will bundle your generated service worker, and get rid of any process.env.NODE_ENV variables that are internally used in the Workbox libraries.

Unfortunately this got wrongfully documented for injectManifest, and this means that injectManifest does not actually support the mode property. There is a feature request on the Workbox repo to support this feature for injectManifest as well.

Until this gets fixed in workbox-build, rollup-plugin-workbox does support the mode property in the Workbox configuration for injectManifest, and when set to 'production' will output a production optimized service worker for you.

const { injectManifest } = require('rollup-plugin-workbox');

module.exports = {
  input: 'main.js',
  output: {
    file: 'dist/bundle.js',
    format: 'esm',
  },
  plugins: [
    injectManifest({
      swSrc: 'sw.js',
      swDest: '/dist/sw.js',
      globDirectory: 'demo/dist/',
+     mode: 'production',
    })
  ],
};

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