import 'dart:io'; import 'package:loggy/loggy.dart'; class MultiLogPrinter extends LoggyPrinter { MultiLogPrinter(this.consolePrinter, this.filePrinter); final LoggyPrinter consolePrinter; final LoggyPrinter filePrinter; @override void onLog(LogRecord record) { consolePrinter.onLog(record); filePrinter.onLog(record); } } class FileLogPrinter extends LoggyPrinter { FileLogPrinter(String filePath) : _logFile = File(filePath); final File _logFile; late final _sink = _logFile.openWrite( mode: FileMode.writeOnly, ); @override void onLog(LogRecord record) { _sink.writeln(record.toString()); } }