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export default {
fetch(request: Request): Response {
const animal = getAnimal(request.url);
const voice = animal.talk();
return new Response(voice);
},
};
function getAnimal(query: string): Animal {
switch (query.split("/").pop()) {
case "dog":
return new Dog();
case "cat":
return new Cat();
}
return new Bird();
}
interface Animal {
readonly name: string;
talk(): string;
}
class Dog implements Animal {
name = "dog";
talk(): string {
return "woof";
}
}
class Cat implements Animal {
name = "cat";
talk(): string {
return "meow";
}
}
class Bird implements Animal {
name = "bird";
talk(): string {
return "chirp";
}
}
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