| // Online state: the browser's own signal (navigator.onLine plus the online/offline | |
| // events) AND a switch the reader can flip to rehearse the offline path. | |
| import { derived, writable } from 'svelte/store'; | |
| const KEY = 'lifekit.forceOffline'; | |
| const read = () => { | |
| try { | |
| return localStorage.getItem(KEY) === '1'; | |
| } catch { | |
| return false; | |
| } | |
| }; | |
| /** True while the reader has switched the app to offline on purpose. */ | |
| export const forceOffline = writable(read()); | |
| forceOffline.subscribe((v) => { | |
| try { | |
| localStorage.setItem(KEY, v ? '1' : '0'); | |
| } catch { | |
| /* storage unavailable */ | |
| } | |
| }); | |
| const browserOnline = writable(typeof navigator === 'undefined' ? true : navigator.onLine); | |
| if (typeof addEventListener === 'function') { | |
| addEventListener('online', () => browserOnline.set(true)); | |
| addEventListener('offline', () => browserOnline.set(false)); | |
| } | |
| export const online = derived([browserOnline, forceOffline], ([b, f]) => b && !f); | |