shipy-sdk-js/dist/core/EventEmitter.js

Shipy Payment Gateway SDK for JavaScript/TypeScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.EventEmitter = void 0;
class EventEmitter {
    constructor() {
        this.events = new Map();
    }
    /**
     * Subscribe to an event
     * @param event The event name to subscribe to
     * @param callback The callback function to execute when the event is emitted
     * @returns A function to unsubscribe from the event
     */
    on(event, callback) {
        if (!this.events.has(event)) {
            this.events.set(event, new Set());
        }
        const callbacks = this.events.get(event);
        callbacks.add(callback);
        // Return unsubscribe function
        return () => {
            const callbacks = this.events.get(event);
            if (callbacks) {
                callbacks.delete(callback);
                if (callbacks.size === 0) {
                    this.events.delete(event);
                }
            }
        };
    }
    /**
     * Subscribe to an event once
     * @param event The event name to subscribe to
     * @param callback The callback function to execute when the event is emitted
     */
    once(event, callback) {
        const unsubscribe = this.on(event, ((data) => {
            unsubscribe();
            callback(data);
        }));
    }
    /**
     * Emit an event
     * @param event The event name to emit
     * @param data The data to pass to the event handlers
     */
    emit(event, data) {
        const callbacks = this.events.get(event);
        if (callbacks) {
            callbacks.forEach(callback => {
                try {
                    callback(data);
                }
                catch (error) {
                    this.emit('error', error instanceof Error ? error : new Error(String(error)));
                }
            });
        }
    }
    /**
     * Remove all listeners for a specific event
     * @param event The event name to remove listeners from
     */
    removeAllListeners(event) {
        this.events.delete(event);
    }
    /**
     * Get the number of listeners for a specific event
     * @param event The event name to get listener count for
     * @returns The number of listeners for the event
     */
    listenerCount(event) {
        var _a, _b;
        return (_b = (_a = this.events.get(event)) === null || _a === void 0 ? void 0 : _a.size) !== null && _b !== void 0 ? _b : 0;
    }
}
exports.EventEmitter = EventEmitter;