74 lines
1.8 KiB
TypeScript
74 lines
1.8 KiB
TypeScript
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import winston from "winston";
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import { ensureDataDir } from "./paths";
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const NODE_ENV = process.env.NODE_ENV || "development";
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const rawLogLevel = (process.env.LOG_LEVEL || "").trim().toLowerCase();
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const validLevels = new Set(["error", "warn", "info", "http", "verbose", "debug", "silly"]);
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const LOG_LEVEL = validLevels.has(rawLogLevel)
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? rawLogLevel
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: NODE_ENV === "production"
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? "info"
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: "debug";
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const devFormat = winston.format.combine(
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winston.format.colorize(),
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winston.format.timestamp({ format: "HH:mm:ss.SSS" }),
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winston.format.printf((info: any) => {
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const { level, message, timestamp, ...meta } = info;
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let msg = `${timestamp} ${level}: ${message}`;
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if (Object.keys(meta).length > 0) {
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msg += ` ${JSON.stringify(meta)}`;
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}
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return msg;
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}),
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);
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const prodFormat = winston.format.combine(
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winston.format.timestamp(),
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winston.format.errors({ stack: true }),
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winston.format.json(),
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);
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export const logger = winston.createLogger({
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level: LOG_LEVEL,
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format: NODE_ENV === "production" ? prodFormat : devFormat,
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transports: [
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new winston.transports.Console({
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level: LOG_LEVEL,
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stderrLevels: ["error"],
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}),
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],
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exitOnError: false,
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});
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if (NODE_ENV === "production") {
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const dataDir = ensureDataDir();
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logger.add(
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new winston.transports.File({
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filename: `${dataDir}/error.log`,
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level: "error",
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maxsize: 10485760,
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maxFiles: 5,
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}),
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);
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logger.add(
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new winston.transports.File({
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filename: `${dataDir}/combined.log`,
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maxsize: 10485760,
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maxFiles: 5,
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}),
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);
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}
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if (rawLogLevel && !validLevels.has(rawLogLevel)) {
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// eslint-disable-next-line no-console
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console.warn(`Invalid LOG_LEVEL='${rawLogLevel}', defaulting to ${LOG_LEVEL}`);
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}
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logger.info(`Logger initialized (level: ${LOG_LEVEL}, env: ${NODE_ENV})`);
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export default logger;
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