// src/lib/logger.ts
/* eslint-disable @typescript-eslint/no-explicit-any */
export interface LogEntry {
level: 'info' | 'warn' | 'error' | 'debug';
message: string;
ts_iso: string;
meta?: Record<string, unknown>;
}
class Logger {
private redactKeys = ['token', 'apikey', 'api_key', 'secret', 'password', 'auth'];
private redact(obj: any): any {
if (typeof obj !== 'object' || obj === null) return obj;
const result: any = Array.isArray(obj) ? [] : {};
for (const key in obj) {
if (this.redactKeys.some(k => key.toLowerCase().includes(k))) {
result[key] = '[REDACTED]';
} else if (typeof obj[key] === 'object') {
result[key] = this.redact(obj[key]);
} else {
result[key] = obj[key];
}
}
return result;
}
private log(level: LogEntry['level'], message: string, meta?: Record<string, unknown>): LogEntry {
const entry: LogEntry = {
level,
message,
ts_iso: new Date().toISOString(),
...(meta && { meta: this.redact(meta) })
};
// Output as JSON
// eslint-disable-next-line no-console
console.log(JSON.stringify(entry));
return entry;
}
info(message: string, meta?: Record<string, unknown>): LogEntry {
return this.log('info', message, meta);
}
warn(message: string, meta?: Record<string, unknown>): LogEntry {
return this.log('warn', message, meta);
}
error(message: string, meta?: Record<string, unknown>): LogEntry {
return this.log('error', message, meta);
}
debug(message: string, meta?: Record<string, unknown>): LogEntry {
return this.log('debug', message, meta);
}
json(level: LogEntry['level'], message: string, meta?: Record<string, unknown>): LogEntry {
return this.log(level, message, meta);
}
}
/* eslint-enable @typescript-eslint/no-explicit-any */
export default new Logger();
