Function pageWsUrl

e2e/src/vm/desktop.ts:314–327

(localPort: number)

/** The first drivable page target's WebSocket URL, fetched through the forward
 * (so the returned ws URL already points at the local port). */
export const pageWsUrl = async (localPort: number): Promise<string> => {
  const deadline = Date.now() + 60_000;
  for (;;) {
    const targets = (await fetch(`http://127.0.0.1:${localPort}/json/list`)
      .then((r) => (r.ok ? r.json() : []))
      .catch(() => [])) as ReadonlyArray<CdpTarget>;
    const page = targets.find((t) => t.type === "page" && t.webSocketDebuggerUrl);
    if (page?.webSocketDebuggerUrl) return page.webSocketDebuggerUrl;
    // oxlint-disable-next-line executor/no-error-constructor -- boundary: setup failure surfaced to the caller
    if (Date.now() >= deadline)
      throw new Error("no CDP page target (app not running with --remote-debugging-port?)");
    await sleep(500);
  }
};