// Copyright 2014 The Flutter Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. import 'dart:async'; import 'package:flutter/foundation.dart'; List<String> captureOutput(VoidCallback fn) { final List<String> log = <String>[]; runZoned<void>(fn, zoneSpecification: ZoneSpecification( print: ( Zone self, ZoneDelegate parent, Zone zone, String line, ) { log.add(line); }, )); return log; }