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| 1 | // No reload or permission prompt is implicit: the app knows about unsaved work |
| 2 | // and whether the person actually asked to enable notifications. |
| 3 | export async function register({ url = "/sw.js", scope, onUpdate = () => {} } = {}) { |
| 4 | if (!globalThis.navigator?.serviceWorker) return null; |
| 5 | const registration = await navigator.serviceWorker.register(url, { |
| 6 | ...(scope ? { scope } : {}), |
| 7 | updateViaCache: "none", |
| 8 | }); |
| 9 | const seen = new WeakSet(); |
| 10 | const notify = () => { |
| 11 | const worker = registration.waiting; |
| 12 | if (worker && !seen.has(worker)) { |
| 13 | seen.add(worker); |
| 14 | onUpdate(registration); |
| 15 | } |
| 16 | }; |
| 17 | const watch = () => { |
| 18 | registration.installing?.addEventListener("statechange", notify); |
| 19 | notify(); |
| 20 | }; |
| 21 | registration.addEventListener("updatefound", watch); |
| 22 | watch(); |
| 23 | return registration; |
| 24 | } |
| 25 | |
| 26 | // Activation affects the registration shared by all tabs. Call only after the |
| 27 | // app has resolved unsaved work across those tabs; this helper never reloads. |
| 28 | export function activateUpdate(registration) { |
| 29 | if (!registration?.waiting) return false; |
| 30 | registration.waiting.postMessage({ type: "rastrillo:pwa:activate" }); |
| 31 | return true; |
| 32 | } |
| 33 | |
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