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PWA Service Worker Manager

Manage Service Worker versioning, caching strategies, and offline testing for PWAs.

1|Updated Sep 15, 2025
Search Tags:#performance#caching#web development#frontend#offline#service worker#pwa
One-click install
npx skills add https://github.com/jls42/leapmultix --skill pwa-service-worker-manager
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: PWA Service Worker Manager
Source: https://github.com/jls42/leapmultix/tree/main/.claude/skills/pwa-service-worker
Command: npx skills add https://github.com/jls42/leapmultix --skill pwa-service-worker-manager

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Managing Service Workers for Progressive Web Apps (PWAs) can be complex, especially ensuring reliable offline functionality and seamless updates without breaking user experience. This Skill provides a structured approach to Service Worker management, including versioning, caching strategies, and robust offline testing.

Core Features & Use Cases

  • Secure Versioning: Guides on using SemVer for Service Worker updates, ensuring old caches are properly cleaned and new ones activated without user intervention.
  • Offline Testing: Provides scripts and instructions for verifying offline functionality using npm run test:pwa-offline and Chrome DevTools, guaranteeing your app works without internet.
  • Caching Strategies: Explains and helps implement various caching strategies (Cache First, Network First) for different asset types, optimizing resource delivery.
  • Use Case: After adding new assets or modifying the Service Worker, activate this Skill to increment the version, test offline capabilities, and ensure a smooth update process for users, guaranteeing your PWA works even without an internet connection.

Quick Start

1. Modify sw.js (update version, resources, handlers).

2. Increment the version number (e.g., 1.0.0 -> 1.0.1).

3. Test offline functionality:

npm run test:pwa-offline

4. Verify in Chrome DevTools (Application tab, Offline mode).