@edicarlos.lds/businessmap-mcp/dist/utils/logger.js

Model Context Protocol server for BusinessMap (Kanbanize) integration

/**
 * Logger utility for MCP servers
 *
 * MCP servers MUST use STDERR for all logging to avoid corrupting
 * the JSON-RPC protocol which uses STDOUT exclusively.
 *
 * This logger provides different log levels while ensuring all output
 * goes to STDERR (process.stderr.write or console.error).
 */
export var LogLevel;
(function (LogLevel) {
    LogLevel[LogLevel["DEBUG"] = 0] = "DEBUG";
    LogLevel[LogLevel["INFO"] = 1] = "INFO";
    LogLevel[LogLevel["WARN"] = 2] = "WARN";
    LogLevel[LogLevel["ERROR"] = 3] = "ERROR";
    LogLevel[LogLevel["NONE"] = 4] = "NONE";
})(LogLevel || (LogLevel = {}));
class Logger {
    currentLevel;
    constructor(level = LogLevel.INFO) {
        this.currentLevel = level;
    }
    setLevel(level) {
        this.currentLevel = level;
    }
    /**
     * Debug messages for development and troubleshooting
     */
    debug(message, ...args) {
        if (this.currentLevel <= LogLevel.DEBUG) {
            this.log('🔍 DEBUG', message, ...args);
        }
    }
    /**
     * Informational messages (successful operations, status updates)
     */
    info(message, ...args) {
        if (this.currentLevel <= LogLevel.INFO) {
            this.log('ℹ️  INFO', message, ...args);
        }
    }
    /**
     * Warning messages (non-critical issues, fallbacks)
     */
    warn(message, ...args) {
        if (this.currentLevel <= LogLevel.WARN) {
            this.log('⚠️  WARN', message, ...args);
        }
    }
    /**
     * Error messages (failures, exceptions)
     */
    error(message, ...args) {
        if (this.currentLevel <= LogLevel.ERROR) {
            this.log('❌ ERROR', message, ...args);
        }
    }
    /**
     * Success messages (operations completed successfully)
     */
    success(message, ...args) {
        if (this.currentLevel <= LogLevel.INFO) {
            this.log('✅ SUCCESS', message, ...args);
        }
    }
    log(prefix, message, ...args) {
        // CRITICAL: Always use STDERR for MCP servers
        // STDOUT is reserved for JSON-RPC protocol only
        const timestamp = new Date().toISOString();
        const formattedMessage = `[${timestamp}] ${prefix}: ${message}`;
        if (args.length > 0) {
            console.error(formattedMessage, ...args);
        }
        else {
            console.error(formattedMessage);
        }
    }
}
// Export singleton instance
export const logger = new Logger(process.env.LOG_LEVEL ? Number.parseInt(process.env.LOG_LEVEL) : LogLevel.INFO);
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