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Асинхронное программирование в TypeScript — Retry для нестабильных API
Фрагмент из «Асинхронное программирование в TypeScript»: Retry для нестабильных API.
async function withRetry<T>(
task: () => Promise<T>,
retries = 2,
): Promise<T> {
let lastError: unknown;
for (let attempt = 0; attempt <= retries; attempt += 1) {
try {
return await task();
} catch (error: unknown) {
lastError = error;
}
}
throw new Error(toMessage(lastError));
}
// Использование
const user = await withRetry(() => loadUser("u-1"), 3);async function withRetry<T>(
task: () => Promise<T>,
retries = 2,
): Promise<T> {
let lastError: unknown;
for (let attempt = 0; attempt <= retries; attempt += 1) {
try {
return await task();
} catch (error: unknown) {
lastError = error;
}
}
throw new Error(toMessage(lastError));
}
// Использование
const user = await withRetry(() => loadUser("u-1"), 3);