export function sleep(ms: number, signal?: AbortSignal): Promise<void> {
return new Promise((resolve, reject) => {
const t = setTimeout(resolve, ms);
if (!signal) return;
if (signal.aborted) {
clearTimeout(t);
reject(new Error('aborted'));
return;
}
signal.addEventListener(
'abort',
() => {
clearTimeout(t);
reject(new Error('aborted'));
},
{ once: true },
);
});
}
export function jitteredBackoffMs(attempt: number): number {
const capMs = 30_000;
const baseMs = 1_000;
const n = Math.max(0, Math.floor(attempt));
const expMs = Math.min(capMs, baseMs * Math.pow(2, n));
// Exponential backoff with jitter (bounded to [exp/2, exp)).
const half = Math.max(1, Math.floor(expMs / 2));
return half + Math.floor(Math.random() * half);
}
