logger.ts•1.25 kB
// Logging utility for consistent logging
// Avoids using console.log/console.error as per requirements
type LogLevel = 'debug' | 'info' | 'warn' | 'error';
const levels: Record<LogLevel, number> = {
debug: 0,
info: 1,
warn: 2,
error: 3,
};
let currentLevel: LogLevel = 'info';
export function setLogLevel(level: LogLevel): void {
currentLevel = level;
}
function shouldLog(level: LogLevel): boolean {
return levels[level] >= levels[currentLevel];
}
function formatLog(level: LogLevel, message: string): string {
const timestamp = new Date().toISOString();
return `[${timestamp}] [${level.toUpperCase()}] ${message}\n`;
}
export function debug(message: string): void {
if (shouldLog('debug')) {
process.stderr.write(formatLog('debug', message));
}
}
export function info(message: string): void {
if (shouldLog('info')) {
process.stderr.write(formatLog('info', message));
}
}
export function warn(message: string): void {
if (shouldLog('warn')) {
process.stderr.write(formatLog('warn', message));
}
}
export function error(message: string): void {
if (shouldLog('error')) {
process.stderr.write(formatLog('error', message));
}
}
export default {
debug,
info,
warn,
error,
setLogLevel,
};