logger.ts•1.14 kB
import fs from 'fs'
import env from './env.js'
import pkg from './pkg.js'
import util from './util.js'
// Can't log to stdio as it disrupts the JSON-RPC protocol
const LOG_FILE = util.resolve('./logs.json', util.REPO)
function formatMessage(level: string, msg: string, data?: object): string {
const logEntry = {
timestamp: new Date().toISOString(),
level,
version: pkg.version,
cwd: util.CWD,
message: msg,
...data,
}
return JSON.stringify(logEntry) + '\n'
}
function writeLog(level: string, msg: string, data?: object): void {
if (!env.DEBUG) {
return
}
try {
const formatted = formatMessage(level, msg, data)
fs.appendFileSync(LOG_FILE, formatted, 'utf-8')
} catch (err) {
// Fallback to stderr if file writing fails
console.error('Logger error:', err)
}
}
const logger = {
log: (msg: string, data?: object) => writeLog('LOG', msg, data),
info: (msg: string, data?: object) => writeLog('INFO', msg, data),
warn: (msg: string, data?: object) => writeLog('WARN', msg, data),
error: (msg: string, data?: object) => writeLog('ERROR', msg, data),
}
export default logger