Swoff Tool Generates Offline-Ready Service Workers From a Single Config File

A developer has released Swoff, an open-source, MIT-licensed command-line tool that automates the creation of service workers for web apps without requiring hand-written boilerplate code. The tool reads a single configuration file, swoff.config.json, and generates plain, auditable vanilla JavaScript files including a service worker, client runtime, and storage utilities. Swoff supports six caching strategies — such as cache-first, network-first, and stale-while-revalidate — and includes optional features like offline mutation queuing, authentication handling, and push notifications. It is framework-agnostic, working with bundler-based stacks like React, Vue, and Next.js as well as no-bundler server-side frameworks such as Django, Rails, and Laravel. The tool is initialized and configured via two CLI commands and integrates into existing build pipelines with no additional runtime dependencies added to the production bundle.