logger.ts•1.12 kB
type LogLevel = "debug" | "info" | "warn" | "error";
interface LogContext {
[key: string]: unknown;
}
function formatContext(context?: LogContext): string {
if (!context || Object.keys(context).length === 0) {
return "";
}
try {
return ` ${JSON.stringify(context)}`;
} catch {
return "";
}
}
function write(level: LogLevel, message: string, context?: LogContext): void {
const timestamp = new Date().toISOString();
const payload = `[${timestamp}] [${level.toUpperCase()}] ${message}${formatContext(context)}`;
if (level === "error") {
console.error(payload);
} else if (level === "warn") {
console.warn(payload);
} else {
console.log(payload);
}
}
export const logger = {
debug(message: string, context?: LogContext): void {
write("debug", message, context);
},
info(message: string, context?: LogContext): void {
write("info", message, context);
},
warn(message: string, context?: LogContext): void {
write("warn", message, context);
},
error(message: string, context?: LogContext): void {
write("error", message, context);
}
};