rimmel/dist/esm/sources/event-listener-object-source.js

A Stream-Oriented UI library for the Rx.Observable Universe

/**
 * Checks whether the provided template expression is an EventListenerObject
 * @param expression a template expression to check
 * @returns is EventListenerObject
 */
const isEventListenerObjectSource = (expression) => expression?.handleEvent;
/**
 * A data source that connects to and feeds an EventListenerObject via its handleEvent method
 * @param handler an Observer stream or RxJS Subject
 * @returns
 */
const EventListenerObjectSource = (handler) => handler.handleEvent.bind(handler);
// TODO: we used to just chain handler.handleEvent?.bind(handler) ?? .... rather than these type guards. Can we still, somehow?

export { EventListenerObjectSource, isEventListenerObjectSource };
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