Retries and reliability

const SAFE = new Set(["rate_limited", "provider_not_configured"]);
const CAREFUL = new Set([
  "provider_rate_limited",
  "provider_unavailable",
  "provider_response_unconfirmed",
  "accounting_response_unconfirmed",
]);

async function withRetries(call, { interactive = false } = {}) {
  for (let attempt = 0; ; attempt++) {
    try {
      return await call();
    } catch (error) {
      const retryable = SAFE.has(error.code) || (interactive && CAREFUL.has(error.code));
      if (!retryable || attempt >= 2) throw error;

      const backoff = (error.retryAfter ?? 2 * 4 ** attempt) * 1000;
      await new Promise((resolve) => setTimeout(resolve, backoff + Math.random() * 500));
    }
  }
}

// Usage, with the finowl() helper from the Errors page:
const result = await withRetries(
  () => finowl("/v1/breaches/password", { password }),
  { interactive: true },
);