import winston from 'winston';
import { join } from 'path';
import { homedir } from 'os';
const logDir = join(homedir(), '.verilator-mcp', 'logs');
export const logger = winston.createLogger({
level: process.env.LOG_LEVEL || 'debug',
format: winston.format.combine(
winston.format.timestamp(),
winston.format.errors({ stack: true }),
winston.format.splat(),
winston.format.json()
),
defaultMeta: { service: 'verilator-mcp' },
transports: [
// Always use file transport for MCP servers
// Console output must be reserved for JSON-RPC only
new winston.transports.File({
filename: join(logDir, 'error.log'),
level: 'error',
}),
new winston.transports.File({
filename: join(logDir, 'combined.log'),
}),
],
});
// Ensure log directory exists
import { mkdirSync } from 'fs';
try {
mkdirSync(logDir, { recursive: true });
} catch (error) {
// Ignore error if directory already exists
}
