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AutoRetryPromise.ts
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/
AutoRetryPromise.ts
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function fetchWithAutoRetry<T extends () => Promise<any>>(
fetcher: T,
maximumRetryCount: number
) {
const originalFetchFn = fetcher;
maximumRetryCount += 1; // total function call= one main function call + retry count
return new Promise((resolve, reject) => {
//fetchFn is function which calls received function
const fetchFn = () => {
originalFetchFn()
.then((data) => {
return resolve(data);
})
.catch((err) => {
maximumRetryCount--;
if (maximumRetryCount === 0) {
reject(err);
} else {
fetchFn();
}
});
};
fetchFn();
});
}
function fetchWithAutoRetry2<T extends (...args: any[]) => Promise<any>>(
fetcher: T,
maximumRetryCount: number
): PromiseLike<Awaited<T>> {
// slightly simple solution
return fetcher()
.then((data) => {
return data;
})
.catch((err) => {
if (maximumRetryCount === 0) {
throw err;
}
return fetchWithAutoRetry(fetcher, maximumRetryCount - 1);
});
}