I am curious about how to effectively call this function in TypeScript. Can you guide me on the correct way to do it?
type Fish = { swim: () => void };
type Bird = { fly: () => void };
function move(animal: Fish | Bird) {
if ("swim" in animal) {
return animal.swim();
}
return animal.fly();
}
I attempted different methods like this:
move(Fish)
or even this:
move(swim)
Unfortunately, all my attempts resulted in an error.
Cats and Dogs are categories, you cannot pass them as arguments...
The correct approach is to instantiate an object of that category and then invoke it.
For example:
let pet: Cat = {
meow: () => {
console.log("I meow");
}
}
playWith(pet);
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