@tendrock/lib/dist/event/EventSignal.js

A lib under the Tendrock system for Minecraft Bedrock Script API

export class EventSignal {
    constructor(bus, eventName) {
        this._eventBus = bus;
        this._eventType = eventName;
    }
    subscribe(callback) {
        this._eventBus.subscribe(this._eventType, callback);
        return callback;
    }
    subscribeOnce(callback) {
        const wrappedCallback = (event) => {
            this.unsubscribe(wrappedCallback);
            callback(event);
        };
        this.subscribe(wrappedCallback);
        return () => {
            this.unsubscribe(wrappedCallback);
        };
    }
    unsubscribe(callback) {
        this._eventBus.unsubscribe(this._eventType, callback);
    }
}