declare function listenSignalEventOnce(filterFn: (event: SignalEventContract) => boolean, fn: (event: SignalEventContract) => void): () => void;
Subscribes to filtered pending lifecycle events with one-time execution.
Listens for events matching the filter predicate, then executes callback once and automatically unsubscribes. Useful for waiting for a specific open or close.
| Parameter | Description |
|---|---|
filterFn |
Predicate to filter which events trigger the callback |
fn |
Callback function to handle the filtered event (called only once) |