Super isn't working JavaScript

Question

var animal = {
run: function(name="Animal") {
alert(name +" is running!");
}
}
var dog = {
__proto__: animal,
run: function() {
super.run("Dog");
}
}
super keyword is unexpected here.
I don't know what isproblem

Answer 1

The problem is run:function() should be run()
https://code.sololearn.com/WXwnyi41G96A/#html
_proto_ is deprecated MDN
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/proto
Super MDN reference
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/super

Answer 2

https://javascript.info/class-inheritance#methods-are-not-free
i found some information about super and as ODLNT says i should use run()