Proper inherit

1.js

function inherit(base, props, statics) {
    if (typeof base !== 'function') {
        statics = props;
        props = base;
        base = Object;
    }
    
    props.constructor.prototype = Object.create(base.prototype);
    
    Object.keys(props).forEach(function (prop) {
        props.constructor.prototype[prop] = props[prop];
    });
    
    props.constructor.prototype.superproto = base.prototype;
    
    if (statics) {
        Object.keys(statics).forEach(function (prop) {
            if (prop !== 'prototype') {
                props.constructor[prop] = statics[prop];
            }
        });
    }
    
    props.constructor.
    
    return props.constructor;
}

var A = inherit({
    foo: function () {
        return 1;
    }
});

var B = inherit(A, {
    foo: function () {
        return this.superproto.foo.call(this) + 1;
    },
    
    answer: function () {
        return 42;
    }
});