export interface Logger {
debug(message: string, meta?: Record<string, unknown>): void;
info(message: string, meta?: Record<string, unknown>): void;
warn(message: string, meta?: Record<string, unknown>): void;
error(message: string, meta?: Record<string, unknown>): void;
}
class ConsoleLogger implements Logger {
private formatMessage(level: string, message: string, meta?: Record<string, unknown>): string {
const timestamp = new Date().toISOString();
const metaStr = meta ? ` ${JSON.stringify(meta)}` : '';
return `[${timestamp}] ${level.toUpperCase()}: ${message}${metaStr}`;
}
debug(message: string, meta?: Record<string, unknown>): void {
if (process.env.LOG_LEVEL === 'debug' || process.env.NODE_ENV === 'development') {
console.debug(this.formatMessage('debug', message, meta));
}
}
info(message: string, meta?: Record<string, unknown>): void {
if (process.env.LOG_LEVEL === 'debug' || process.env.LOG_LEVEL === 'info') {
console.info(this.formatMessage('info', message, meta));
}
}
warn(message: string, meta?: Record<string, unknown>): void {
console.warn(this.formatMessage('warn', message, meta));
}
error(message: string, meta?: Record<string, unknown>): void {
console.error(this.formatMessage('error', message, meta));
}
}
export const logger: Logger = new ConsoleLogger();
