import { LogLevel } from '../models/types.js';
/**
* Logger class
*/
export class Logger {
/**
* Log a message
* Note: All logging goes to stderr to avoid interfering with MCP stdio protocol (which uses stdout)
*/
public static log(message: string, level: LogLevel = "info"): void {
const timestamp = new Date().toISOString();
const formattedMessage = `[${timestamp}] [${level.toUpperCase()}] ${message}`;
// Always write to stderr to avoid corrupting MCP protocol messages on stdout
process.stderr.write(formattedMessage + '\n');
}
/**
* Handle error
*/
public static handleError(
error: unknown,
prefix: string = "",
exit: boolean = false
): string {
const errorMessage = error instanceof Error ? error.message : String(error);
const fullMessage = prefix ? `${prefix}: ${errorMessage}` : errorMessage;
Logger.log(fullMessage, "error");
if (exit) {
process.exit(1);
}
return fullMessage;
}
}
