toosoon-events/lib/index.js

Project providing services implemented as singleton class instances

/**
 * Utility abstract class for creating multiple event listeners
 *
 * @exports
 * @class EventManager
 * @abstract
 */
export class EventManager {
    /**
     * Add a listener to this manager listeners
     */
    on(listener) {
        if (!this.listeners.length)
            this.bind?.();
        if (!this.listeners.includes(listener))
            this.listeners.push(listener);
        return () => this.off(listener);
    }
    /**
     * Remove a listener from this manager listeners
     */
    off(listener) {
        this.listeners = this.listeners.filter((_listener) => _listener !== listener);
        if (!this.listeners.length)
            this.unbind?.();
    }
}
/**
 * Utility abstract class for creating multiple events listeners
 *
 * @exports
 * @class EventsManager
 * @abstract
 */
export class EventsManager {
    /**
     * Add a listener to this manager listeners
     */
    on(eventKey, listener) {
        if (!this.listeners[eventKey])
            this.listeners[eventKey] = [];
        if (!this.listeners[eventKey].length)
            this.bind?.(eventKey);
        if (!this.listeners[eventKey].includes(listener))
            this.listeners[eventKey].push(listener);
        return () => this.off(eventKey, listener);
    }
    /**
     * Remove a listener gtom this manager listeners
     */
    off(eventKey, listener) {
        this.listeners[eventKey] = this.listeners[eventKey]?.filter((_listener) => _listener !== listener) ?? [];
        if (!this.listeners[eventKey].length)
            this.unbind?.(eventKey);
    }
}