type LogLevel = "debug" | "info" | "warn" | "error" | "fatal";
const levels: Record<LogLevel, number> = {
debug: 0,
info: 1,
warn: 2,
error: 3,
fatal: 4,
};
const currentLevel = (process.env.LOG_LEVEL || "info") as LogLevel;
const shouldLog = (level: LogLevel): boolean =>
levels[level] >= (levels[currentLevel] ?? levels.info);
const timestamp = (): string => {
const now = new Date();
const h = now.getHours().toString().padStart(2, "0");
const m = now.getMinutes().toString().padStart(2, "0");
const s = now.getSeconds().toString().padStart(2, "0");
const ms = now.getMilliseconds().toString().padStart(3, "0");
return `[${h}:${m}:${s}.${ms}]`;
};
export const logger = {
debug: (data: Record<string, unknown>, msg: string) => {
if (shouldLog("debug"))
console.debug(`${timestamp()} [DEBUG] ${msg}`, data);
},
info: (msg: string) => {
if (shouldLog("info")) console.info(`${timestamp()} ${msg}`);
},
warn: (data: Record<string, unknown>, msg: string) => {
if (shouldLog("warn")) console.warn(`${timestamp()} [WARN] ${msg}`, data);
},
error: (data: Record<string, unknown>, msg: string) => {
if (shouldLog("error"))
console.error(`${timestamp()} [ERROR] ${msg}`, data);
},
fatal: (msgOrData: string | Record<string, unknown>, msg?: string) => {
if (shouldLog("fatal")) {
if (typeof msgOrData === "string") {
console.error(`${timestamp()} [FATAL] ${msgOrData}`);
} else {
console.error(`${timestamp()} [FATAL] ${msg}`, msgOrData);
}
}
},
};
