Extensions don't fuck anything up

main.dart

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Material(
        child: Foo().nudge(x: 50),
      ),
    );
  }
}

class Foo extends StatelessWidget {
  Foo(){
    print("instantiated Foo"); // fires once
  }
  
  @override
  build(BuildContext context) {
    return Text("Foo!");
  }
}

extension on Widget {
  nudge({double x = 0, double y = 0}) =>
      Transform.translate(offset: Offset(x, y), child: this);
}