Function waitForHttp

e2e/setup/boot.ts:180–211

(
  url: string,
  options: {
    readonly timeoutMs?: number;
    readonly expectRedirect?: boolean;
    readonly signal?: AbortSignal;
  } = {},
)

};

export const waitForHttp = async (
  url: string,
  options: {
    readonly timeoutMs?: number;
    readonly expectRedirect?: boolean;
    readonly signal?: AbortSignal;
  } = {},
): Promise<void> => {
  const timeoutMs = options.timeoutMs ?? 90_000;
  const deadline = performance.now() + timeoutMs;
  let lastError: unknown;
  while (performance.now() < deadline) {
    options.signal?.throwIfAborted();
    try {
      const remainingMs = Math.max(1, deadline - performance.now());
      const probeTimeout = AbortSignal.timeout(Math.min(HTTP_PROBE_TIMEOUT_MS, remainingMs));
      const signal = options.signal
        ? AbortSignal.any([options.signal, probeTimeout])
        : probeTimeout;
      const response = await fetch(url, { redirect: "manual", signal });
      // During a cold vite compile /api/* falls back to the SPA's 200 HTML —
      // expectRedirect waits for the real handler (302) instead.
      if (options.expectRedirect ? response.status === 302 : response.status < 500) return;
      lastError = new Error(`status ${response.status}`);
    } catch (error) {
      options.signal?.throwIfAborted();
      lastError = error;
    }
    await sleep(400, undefined, { signal: options.signal });
  }
  throw new BootReadinessTimeoutError(url, timeoutMs, lastError);
};

/**
 * Reboot DOWN-GATE: wait until `url` stops answering (fetch rejects — connection