Question: How do i get the happy face by passing any type parameter to ```Foo``` except ```<dynamic>```

typed_inherited.dart

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Foo<void>(child: Bar(), txt: "Happy 😁"),
    );
  }
}

class Foo<T> extends InheritedWidget {
  Foo({Key key, this.txt, this.child}) : super(key: key, child: child);
  final String txt;
  final Widget child;
  static Foo of(BuildContext context) =>
      context.dependOnInheritedWidgetOfExactType<Foo>();
  @override
  bool updateShouldNotify(Foo old) => true;
}

class Bar extends StatelessWidget {
  @override
  Widget build(BuildContext ctx) => Text(Foo.of(ctx)?.txt ?? "Sad 🤕");
}

[SOLVED]
Solution Code: kranfix/typed_inherited.dart