diff options
Diffstat (limited to 'src/utils/misc.tsx')
-rw-r--r-- | src/utils/misc.tsx | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/src/utils/misc.tsx b/src/utils/misc.tsx index ded052b..aca7661 100644 --- a/src/utils/misc.tsx +++ b/src/utils/misc.tsx @@ -1,4 +1,4 @@ -import { React } from "../webpack"; +import { React } from "../webpack/common"; /** * Makes a lazy function. On first call, the value is computed. @@ -16,17 +16,28 @@ export function lazy<T>(factory: () => T): () => T { * Await a promise * @param factory Factory * @param fallbackValue The fallback value that will be used until the promise resolved - * @returns A state that will either be null or the result of the promise + * @returns [value, error, isPending] */ -export function useAwaiter<T>(factory: () => Promise<T>, fallbackValue: T | null = null): T | null { - const [res, setRes] = React.useState<T | null>(fallbackValue); +export function useAwaiter<T>(factory: () => Promise<T>): [T | null, any, boolean]; +export function useAwaiter<T>(factory: () => Promise<T>, fallbackValue: T): [T, any, boolean]; +export function useAwaiter<T>(factory: () => Promise<T>, fallbackValue: T | null = null): [T | null, any, boolean] { + const [state, setState] = React.useState({ + value: fallbackValue, + error: null as any, + pending: true + }); React.useEffect(() => { - factory().then(setRes); + let isAlive = true; + factory() + .then(value => isAlive && setState({ value, error: null, pending: false })) + .catch(error => isAlive && setState({ value: null, error, pending: false })); + + return () => void (isAlive = false); }, []); - return res; -} + return [state.value, state.error, state.pending]; +}; /** * A lazy component. The factory method is called on first render. For example useful |