(callback: () => void, deps: unknown[] = [])
| 1 | import { useEffect, useRef } from "react"; |
| 2 | |
| 3 | export function useLoadWhenOnline(callback: () => void, deps: unknown[] = []) { |
| 4 | const callbackRef = useRef <() => void>(callback); |
| 5 | |
| 6 | useEffect(() => { |
| 7 | callbackRef.current = callback; |
| 8 | }); |
| 9 | |
| 10 | useEffect(() => { |
| 11 | const cb = () => callbackRef.current(); |
| 12 | |
| 13 | if (window.navigator.onLine) { |
| 14 | cb(); |
| 15 | return; |
| 16 | } |
| 17 | |
| 18 | window.addEventListener("online", cb); |
| 19 | |
| 20 | return () => { |
| 21 | window.removeEventListener("online", cb); |
| 22 | }; |
| 23 | }, [...deps]); |
| 24 | } |