garrytan/gstack · error · Error

No active page. Use "browse goto <url>" first.

Error message

No active page. Use "browse goto <url>" first.

What it means

Error "No active page. Use "browse goto <url>" first." thrown in garrytan/gstack.

Source

Thrown at browse/src/browser-manager.ts:944

  async getTabListWithTitles(): Promise<Array<{ id: number; url: string; title: string; active: boolean }>> {
    const tabs: Array<{ id: number; url: string; title: string; active: boolean }> = [];
    for (const [id, page] of this.pages) {
      tabs.push({
        id,
        url: page.url(),
        title: await page.title().catch(() => ''),
        active: id === this.activeTabId,
      });
    }
    return tabs;
  }

  // ─── Session Access ────────────────────────────────────────
  /** Get the TabSession for the active tab. */
  getActiveSession(): TabSession {
    const session = this.tabSessions.get(this.activeTabId);
    if (!session) throw new Error('No active page. Use "browse goto <url>" first.');
    return session;
  }

  /** Get a TabSession by tab ID. Used by /batch for parallel tab execution. */
  getSession(tabId: number): TabSession {
    const session = this.tabSessions.get(tabId);
    if (!session) throw new Error(`Tab ${tabId} not found`);
    return session;
  }

  /** Get the underlying Page for a tab id. Returns null if the tab doesn't exist.
   *  Used by the CDP bridge (cdp-bridge.ts) to mint per-tab CDPSessions. */
  getPageForTab(tabId: number): Page | null {
    return this.pages.get(tabId) ?? null;
  }

  // ─── Two-tier mutex (Codex T7) ─────────────────────────────
  // Per-tab and global locks for the CDP bridge. tab-scoped methods take the

View on GitHub (pinned to 94993f7401)

When it happens

Trigger: Thrown at browse/src/browser-manager.ts:944 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of garrytan/gstack@94993f7401 (2026-08-12). Data as JSON: /api/errors/8aaa2d1e6f5d7850. Report an issue: GitHub.