6To5 Compiler - use __proto__ for inheritance

Question

As the output of 6to5 I\'ve got the following code:

var _inherits = function (subClass, superClass) {
    if (typeof superClass !== \"function\" && super         


        

Answer 1

Can anybody describe what for used updating __proto__ property?

ES6 specs that when classes inherit from each other, the resulting constructor functions should inherit from each other as well. CoreController.isPrototypeOf(Controller) will yield true.

As i try - it doesn't nothing useful

It is very useful for inheriting static properties, which are placed on the constructor functions in JS.

CoreController.hi = console.log.bind(console, "hello world");
CoreController.hi(); // hello world
Controller.hi(); // error
_inherits(Controller, CoreController);
Controller.hi(); // hello world

documentation says that proto should be object, but in code is used for setting function

Every function is an object in JS. It has a prototype, and it can serve as one.