What causes "[AntigravityRuntime] failed to resolve preferred target:" in jlcodes99/cockpit-tools?

Read the logged error object to see the underlying cause (invoke name, backend message).

[AntigravityRuntime] failed to resolve preferred target:

Error message

[AntigravityRuntime] failed to resolve preferred target:

What it means

The useAntigravityRuntimeTarget hook (src/hooks/useAntigravityRuntimeTarget.ts:57) resolves the user's preferred Antigravity runtime target on mount. If the async resolution promise rejects, the .catch logs a console.warn '[AntigravityRuntime] failed to resolve preferred target:' with the error and leaves the target at its initial value. It is a non-fatal warning: the UI keeps the default target instead of the preference.

Solutions

Read the logged error object to see the underlying cause (invoke name, backend message).
Retry the resolution (e.g. re-mount the component or re-run the effect) once the backend is ready.
Reset the runtime target preference to the default if the saved one references a missing runtime.
Verify the app runs inside the Tauri shell — in a plain browser build the backend command will always fail.

Example fix

// before
.catch((error) => {
  console.warn('[AntigravityRuntime] failed to resolve preferred target:', error);
});
// after
.catch((error) => {
  console.warn('[AntigravityRuntime] failed to resolve preferred target:', error);
  setAntigravityRuntimeTarget(initialTarget); // explicit fallback
});

Defensive patterns

Strategy: fallback

Validate before calling

// Before trusting the preference:
const preferred = localStorage.getItem('antigravityRuntimeTarget');
const valid = preferred == null || ['stable', 'insiders'].includes(preferred);
if (!valid) localStorage.removeItem('antigravityRuntimeTarget');

Type guard

function isRuntimeTarget(v: unknown): v is RuntimeTarget {
  return v === 'stable' || v === 'insiders';
}

Try / catch

getAntigravityRuntimeTarget()
  .then(setAntigravityRuntimeTarget)
  .catch((error) => {
    console.warn('[AntigravityRuntime] failed to resolve preferred target:', error);
    setAntigravityRuntimeTarget(initialTarget);
  });

Prevention

Reset runtime target preferences after uninstalling/reinstalling Antigravity.
Only invoke backend commands inside the Tauri shell; guard isTauri() in web builds.
Delay preference resolution until backend services report ready.

When it happens

Trigger: On component mount, the backend command backing getAntigravityRuntimeTarget()/preference resolution rejects — e.g. Tauri invoke failure, backend not ready yet, or persisted preference referencing a missing runtime — and the promise rejects before setAntigravityRuntimeTarget runs.

Common situations: App started before the backend service initialized; saved runtime preference points at an uninstalled Antigravity version; web (non-Tauri) build where invoke is unavailable; transient IPC error.

Related errors

AI-assisted analysis of jlcodes99/cockpit-tools@1ed8b77992 (2026-09-05). Data as JSON: /api/errors/cf5404ac72487edb. Report an issue: GitHub.

Appendix: source

Thrown at src/hooks/useAntigravityRuntimeTarget.ts:57

  useEffect(() => {
    if (antigravityRuntimeTargetAutoResolveStarted) {
      return;
    }
    antigravityRuntimeTargetAutoResolveStarted = true;

    const initialTarget = getAntigravityRuntimeTarget();
    void resolvePreferredAntigravityRuntimeTarget(initialTarget)
      .then((preferredTarget) => {
        if (preferredTarget === initialTarget) {
          return;
        }
        if (getAntigravityRuntimeTarget() !== initialTarget) {
          return;
        }
        setAntigravityRuntimeTarget(preferredTarget);
      })
      .catch((error) => {
        console.warn('[AntigravityRuntime] failed to resolve preferred target:', error);
      });
  }, []);

  return target;
}

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