sw-precache-webpack-plugin for webpack's default service worker template

When utilizing the sw-precache-webpack-plugin to create a service worker for my project, I've noticed that while all my fonts, js, and css files are stored in the cache storage, the index/html file is missing. This has resulted in it not functioning properly when offline. Additionally, when attempting to add it to the homepage on the App manifest, I receive an error stating 'site cannot be installed: no matching service worker detected'.

The technology stack I'm using consists of a universal React + redux app, along with Express + ejs for the index file. I suspect that the issue may stem from using ejs instead of a default html file, as the plugin doesn't seem to locate the required file. Is there a method to specify a template for this purpose? My configuration for the sw-precache-webpack-plugin in webpack is as follows:

new SWPrecacheWebpackPlugin({
    cacheId: 'tester',
    filename: 'my-service-worker.js',
    directoryIndex: '/',
}),

I would greatly appreciate any guidance on resolving this matter.

javascriptexpresswebpackejssw-precache

Answer №1

One important detail that seems to be overlooked is the specification of a caching strategy in the plugin configuration.

plugins: [
    new SWPrecacheWebpackPlugin({
        cacheId: 'tester',
        filename: 'my-service-worker.js',
        runtimeCaching: [
        {
            urlPattern: '/',
            handler: 'cacheFirst',
        }
        ]
    })
]

For more information, please refer to the documentation here: https://github.com/GoogleChrome/sw-precache#runtimecaching-arrayobject

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