{"id":13433409,"url":"https://github.com/yusukebe/service-worker-magic","last_synced_at":"2025-04-19T04:15:13.965Z","repository":{"id":66623597,"uuid":"457846743","full_name":"yusukebe/service-worker-magic","owner":"yusukebe","description":"Server and Browser code are really the same. 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The scope is `/sw/*`.\n- `/server/hello` =\u003e from the server.\n- `/sw/hello` =\u003e from the browser not from a server. Request is intercepted by Service Worker.\n\nIt's magic.\n\n## Demo\n\n- \u003chttps://service-worker-magic.yusukebe.workers.dev\u003e\n\n## Screencast\n\n![SS](https://user-images.githubusercontent.com/10682/153455595-77fea6e5-93d7-4698-8d75-85896edd995b.gif)\n\n## Walkthrough\n\n### Server\n\nRun Cloudflare Workers on your terminal:\n\n```sh\n$ wrangler dev sw.js\n```\n\n`sw.js` is served by `sw.js`.\n\n### Browser\n\nAccess `/`. Your browser will load `sw.js`:\n\n```js\nnavigator.serviceWorker.register('/sw.js', { scope: '/sw/', type: 'module' })\n```\n\nService Worker is registered.\n\n### Then...\n\n- `/server/hello` =\u003e content is returned from the server.\n- `/sw/hello` =\u003e content is returned from the browser. Not from the server.\n\n### Attention\n\nIf Service Worker does not work, clear the cache on your browser.\n\n## Code\n\nJust [`sw.js`](./src/sw.js).\n\n### Short version\n\nIt does not work well.\n\n```js\nimport { Hono } from './hono.js'\nimport { serveStatic } from './hono.serve-static.js'\nimport { logger } from './hono.logger.js'\n\nlet from = 'Service Worker'\n\ntry {\n  from = FROM // \"Server\" is set on Cloudflare Workers environment variables\n}\n\nconst app = new Hono()\n\n// Middleware\napp.use('/sw/*', logger())\napp.use('/server/*', logger())\napp.use('/:name{.+.js}', serveStatic({ root: './' }))\n\n\n// Top page\napp.get('/', (c) =\u003e {\n  const html = `\u003chtml\u003e\u003cbody\u003e\n  \u003cscript\u003e\n    navigator.serviceWorker.register('/sw.js', { scope: '/sw/', type: 'module' })\n  \u003c/script\u003e\n  \u003c/body\u003e\u003c/html\u003e`\n  return c.html(html)\n})\n\n// Handler\nconst handler = (c) =\u003e {\n  const text = `Hello! from ${from}!`\n  return c.text(text)\n}\n\n// Route\napp.get('/server/hello', handler)\napp.get('/sw/hello', handler)\n\n// addEventListener('fetch'...\napp.fire()\n```\n\n## Related projects\n\n`sw.js` is using Hono as Service Worker framework.\n\n- Hono\\[炎\\] \u003chttps://github.com/yusukebe/hono\u003e\n\n## Author\n\nYusuke Wada \u003chttps://github.com/yusukebe\u003e\n\n## License\n\nMIT\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fyusukebe%2Fservice-worker-magic","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fyusukebe%2Fservice-worker-magic","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fyusukebe%2Fservice-worker-magic/lists"}