ts-tiny-logger/dist/logger.js

A lightweight TypeScript logger package with Flyweight pattern

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Logger = void 0;
/**
 * A simple logger class that implements the Flyweight pattern
 * to allow for multiple logger instances
 */
class Logger {
    /**
     * Private constructor to prevent direct instantiation
     */
    constructor() {
        this.logs = [];
    }
    /**
     * Get a logger instance with the given identifier
     * If an instance with this identifier already exists, it will be returned
     * Otherwise, a new instance will be created
     *
     * @param identifier - Unique identifier for the logger instance
     * @returns Logger instance
     */
    static getInstance(identifier) {
        if (!Logger.instances.has(identifier)) {
            Logger.instances.set(identifier, new Logger());
        }
        return Logger.instances.get(identifier);
    }
    /**
     * Add a new log entry
     *
     * @param name - Name or category of the log
     * @param value - Value or message to be logged
     */
    log(name, value) {
        const now = new Date();
        const dateTime = this.formatDateTime(now);
        this.logs.push({
            dateTime,
            name,
            value
        });
    }
    /**
     * Get all log entries
     *
     * @returns Array of log entries
     */
    getLogs() {
        return [...this.logs];
    }
    /**
     * Clear all log entries
     */
    clearLogs() {
        this.logs = [];
    }
    /**
     * Format date and time to 'YYYY-MM-DD:hh-mm-ss-ms' format
     *
     * @param date - Date object to format
     * @returns Formatted date and time string
     */
    formatDateTime(date) {
        const year = date.getFullYear();
        const month = String(date.getMonth() + 1).padStart(2, '0');
        const day = String(date.getDate()).padStart(2, '0');
        const hours = String(date.getHours()).padStart(2, '0');
        const minutes = String(date.getMinutes()).padStart(2, '0');
        const seconds = String(date.getSeconds()).padStart(2, '0');
        const milliseconds = String(date.getMilliseconds()).padStart(3, '0');
        return `${year}-${month}-${day}:${hours}-${minutes}-${seconds}-${milliseconds}`;
    }
}
exports.Logger = Logger;
Logger.instances = new Map();