root
40 lines
1019 B
TypeScript
40 lines
1019 B
TypeScript
import winston from 'winston';
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const { combine, timestamp, json, printf, colorize, errors } = winston.format;
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const devFormat = printf(({ level, message, timestamp, ...metadata }) => {
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let msg = `${timestamp} [${level}]: ${message}`;
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if (Object.keys(metadata).length > 0) {
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msg += ` ${JSON.stringify(metadata)}`;
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}
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return msg;
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});
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export const createLogger = (service: string): winston.Logger => {
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const isDev = process.env.NODE_ENV !== 'production';
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const logLevel = process.env.LOG_LEVEL || (isDev ? 'debug' : 'info');
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return winston.createLogger({
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level: logLevel,
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defaultMeta: { service },
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format: isDev
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? combine(
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colorize(),
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timestamp({ format: 'HH:mm:ss' }),
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errors({ stack: true }),
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devFormat
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)
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: combine(
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timestamp(),
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json()
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),
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transports: [
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new winston.transports.Console({
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stderrLevels: ['error'],
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}),
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],
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});
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};
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export const logger = createLogger('App');
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