cost-claude/dist/utils/logger.js

Claude Code cost monitoring, analytics, and optimization toolkit

import winston from 'winston';
import { join } from 'path';
import { homedir } from 'os';
import { existsSync, mkdirSync } from 'fs';
const logDir = join(homedir(), '.cost-claude', 'logs');
if (!existsSync(logDir)) {
    mkdirSync(logDir, { recursive: true });
}
const logFormat = winston.format.combine(winston.format.timestamp({
    format: 'YYYY-MM-DD HH:mm:ss',
}), winston.format.errors({ stack: true }), winston.format.splat(), winston.format.json());
const consoleFormat = winston.format.combine(winston.format.colorize(), winston.format.timestamp({
    format: 'HH:mm:ss',
}), winston.format.printf(({ timestamp, level, message, ...meta }) => {
    let msg = `${timestamp} ${level}: ${message}`;
    if (Object.keys(meta).length > 0) {
        msg += ` ${JSON.stringify(meta)}`;
    }
    return msg;
}));
export const logger = winston.createLogger({
    level: process.env.LOG_LEVEL || 'info',
    format: logFormat,
    transports: [
        new winston.transports.Console({
            format: consoleFormat,
        }),
        new winston.transports.File({
            filename: join(logDir, 'error.log'),
            level: 'error',
        }),
        new winston.transports.File({
            filename: join(logDir, 'combined.log'),
        }),
    ],
});
if (process.env.NODE_ENV === 'production') {
    logger.add(new winston.transports.File({
        filename: join(logDir, 'app.log'),
        maxsize: 5242880,
        maxFiles: 5,
    }));
}
export default logger;
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