Function resolveOnce

src/screens/REPL.tsx:2255–2259

(allow: boolean)

    return new Promise(resolveShouldAllowHost => {
      let resolved = false;
      function resolveOnce(allow: boolean): void {
        if (resolved) return;
        resolved = true;
        resolveShouldAllowHost(allow);
      }

      // Queue the local sandbox permission dialog
      setSandboxPermissionRequestQueue(prev => [...prev, {