A Node.js module to generate a service worker that precaches static resources for offline web apps.
sw-precache is a Node.js module that generates a service worker to precache static resources during the build process. It solves the problem of making web applications work offline by automatically caching files like HTML, CSS, and JavaScript, ensuring they load quickly from the cache without network requests.
Web developers building Progressive Web Apps (PWAs) or any web application that needs offline functionality and fast loading times, especially those using build tools like Gulp, Grunt, or Webpack.
Developers choose sw-precache because it seamlessly integrates into existing build workflows, automates the generation of a robust service worker with versioning, and provides a reliable cache-first strategy for static assets, which is essential for creating offline-capable web apps.
[Deprecated] A node module to generate service worker code that will precache specific resources so they work offline.
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Seamlessly integrates with Gulp, Grunt, and Webpack via wrappers, automating service worker generation directly in JavaScript-based build scripts, as shown in the demo files.
Generates versioned hashes for files during builds and updates the cache only when content changes, eliminating manual cache busting for static assets.
Specifically designed to precache the core App Shell for Progressive Web Apps, enabling instant UI loads and reliable offline support, as emphasized in the philosophy.
Supports configuration with sw-toolbox via the runtimeCaching option, allowing dynamic content caching alongside precached static resources.
Officially deprecated in favor of Workbox, meaning no new features, bug fixes, or security updates from Google, as stated in the README warning.
Offers numerous options like staticFileGlobs, dynamicUrlToDependencies, and runtimeCaching, which can be overwhelming and error-prone for simple use cases.
Primarily focused on static precaching; dynamic content handling requires extra dependency on sw-toolbox, adding setup complexity and another deprecated library.
If used outside an automated build, the CLI requires manual re-runs after each resource change, risking stale caches, as cautioned in the command-line section.