Lets say I have:
function Pet(){}
Pet.prototype.breathe = function(){}
And
function Cat(){}
I then go along and do:
Cat.prototype = Object.create(Pet.prototype)
Cat.prototype.purr = function(){}
I know I can check
var cat = new Cat()
console.log(cat instanceof Pet); //true
But how can I check if the function Cat is going to be an instance of Pet without instantiating it?
The most simple and hacky way I can think of is...
Pet.prototype.$$pet = true
And then check
console.log(Cat.prototype.$$pet) //true
But that doesn't seem very nice because I can just go along and do
Cat.prototype.$$pet = true
