enh(utils) refactor emitter to use Map and Set; update logging mechanism

lib/core/Emitter.js

@@ -1,7 +1,7 @@
 class Emitter {
 	#listeners;
 	constructor() {
-		this.#listeners = {};
+		this.#listeners = new Map();
 	}
 
 	/**
@@ -11,10 +11,10 @@ class Emitter {
 	 * @param {Function} callback - The callback function to be executed when the event is triggered.
 	 */
 	on(event, callback) {
-		if (!this.#listeners[event]) {
+		if (!this.#listeners.has(event)) {
-			this.#listeners[event] = [];
+			this.#listeners.set(event, new Set());
 		}
-		this.#listeners[event].push(callback);
+		this.#listeners.get(event).push(callback);
 	}
 
 	/**
@@ -25,28 +25,15 @@ class Emitter {
 	 * @param {Function} [callback] - The callback function to be removed.
 	 */
 	off(event, callback = undefined) {
-		if (typeof event != 'string') {
+		if (typeof event != 'string') return;
-			throw new TypeError('event must be a string');
+
-			return;
+		if (!this.#listeners.has(event)) return false;
+
+		if (!callback || this.#listeners.get(event).size === 0) {
+			return this.#listeners.delete(event);
 		}
 
-		if (
+		this.#listeners.get(event).delete(callback);
-			!Array.isArray(this.#listeners[event]) ||
-			this.#listeners[event].length === 0
-		) {
-			throw new TypeError(
-				`listener for \`${event}\` is not an array or empty`
-			);
-		}
-
-		if (!callback) {
-			this.#listeners[event] = undefined;
-			return;
-		}
-
-		this.#listeners[event] = this.#listeners[event].filter(
-			(listener) => listener !== callback
-		);
 	}
 
 	/**
@@ -56,11 +43,11 @@ class Emitter {
 	 * @param {...any} args - The arguments to pass to the event listeners.
 	 */
 	emit(event, ...args) {
-		if (!this.#listeners[event]) {
+		if (!this.#listeners.has(event)) {
 			return;
 		}
 
-		for (const callback of this.#listeners[event]) {
+		for (const callback of [...this.#listeners.get(event)]) {
 			callback(this, ...args);
 		}
 	}

lib/core/Logger.js

@@ -55,13 +55,13 @@ class Logger {
 	/**
 	 * Logs a message with the specified level and options.
 	 *
-	 * @param {string} message - The message to be logged.
+	 * @param {array} data - The message to be logged.
 	 * @param {string} level - The log level (e.g., 'info', 'warn', 'error').
 	 * @param {object} [options] - The optional log options.
 	 * @param {number} [options.spamThreshold] - The spam threshold for duplicate messages.
 	 * @param {string} [options.namespace] - The namespace for the log message.
 	 */
-	static log(message, level, options = Logger.#defaultOptions) {
+	static #log(data, level, options = Logger.#defaultOptions) {
 		if (!Logger.#enabled) return;
 
 		const {
@@ -69,65 +69,56 @@ class Logger {
 			namespace,
 		} = options;
 
-		if (Logger.#lastMessage === message) {
+		if (Logger.#lastMessage === data) {
 			if (spamThreshold <= Logger.#spamIndex) return;
 			Logger.#spamIndex++;
 		}
 
 		if (typeof console[level] === 'function') {
 			console[level](
-				`[${
+				`[${namespace ? namespace + ' - ' : ''}${level.toUpperCase()}]`,
-					namespace ? namespace + ' - ' : ''
+				...data
-				}${level.toUpperCase()}] ${message}`
 			);
 		} else {
-			console.log(
+			console.log(`[${namespace ? namespace + ' - ' : ''}LOG]`, ...data);
-				`[${namespace ? namespace + ' - ' : ''}LOG] ${message}`
-			);
 		}
 
-		if (Logger.#lastMessage !== message) _spamIndex = 0;
+		if (Logger.#lastMessage !== data) this.#spamIndex = 0;
-		Logger.#lastMessage = message;
+		Logger.#lastMessage = data;
 	}
 
 	/**
-	 * Logs an error message.
+	 * Logs an error.
 	 *
-	 * @param {string} message - The error message to log.
+	 * @param {string} data - The error data to log.
-	 * @param {object} options - The options for logging. Default is Logger.#defaultOptions.
 	 */
-	static error(message, options = Logger.#defaultOptions) {
+	static error() {
-		Logger.log(message, 'error', options);
+		Logger.#log([...arguments], 'error');
 	}
 
 	/**
-	 * Logs an informational message.
+	 * Logs an information.
 	 *
-	 * @param {string} message - The message to be logged.
+	 * @param {string} data - The data to be logged.
-	 * @param {object} options - The options for logging. (optional)
 	 */
-	static info(message, options = Logger.#defaultOptions) {
+	static info() {
-		Logger.log(message, 'info', options);
+		Logger.#log([...arguments], 'info');
 	}
 
 	/**
-	 * Logs a warning message.
+	 * Logs a warning.
 	 *
-	 * @param {string} message - The warning message to be logged.
+	 * @param {string} data - The warning data to be logged.
-	 * @param {object} options - The options for logging. Default is Logger.#defaultOptions.
 	 */
-	static warn(message, options = Logger.#defaultOptions) {
+	static warn() {
-		Logger.log(message, 'warn', options);
+		Logger.#log([...arguments], 'warn');
 	}
 
 	/**
-	 * Logs a warning message.
+	 * wrapper for logging warnings.
-	 *
-	 * @param {string} message - The warning message to be logged.
-	 * @param {object} [options=Logger.#defaultOptions] - The options for the warning log.
 	 */
-	static warning(message, options = Logger.#defaultOptions) {
+	static warning() {
-		Logger.warn(message, options);
+		Logger.#log([...arguments], 'warn');
 	}
 }