ebanina.js

const STORE = {};

export default {
    init: function (name, Fn) {
        if (typeof name !== 'undefined') {
            return STORE[name] = Fn;
        }

        Fn = STORE[this.root.getAttribute('data-as')];
        let instance = Fn && new Fn();

        if (instance) {
            let _prototype;
            let _super = {};
            let mixin = _super;

            do { // reconstruct prototype chain
                let previous = !_prototype ? instance : _prototype;
                _prototype = Object.getPrototypeOf(previous);

                // skip the first & the last
                if (previous !== instance && _prototype !== null) {
                    Object.getOwnPropertyNames(previous)
                        .forEach(function (key) {
                            if (key !== 'constructor') {
                                // skip first super
                                if (_super !== mixin && key !== 'init') {
                                    _super[key] = previous[key];
                                }

                                if (!mixin.hasOwnProperty(key)) {
                                    mixin[key] = previous[key];
                                }
                            }
                        });

                    // we need to go super (but not too super)
                    if (Object.prototype !== _prototype) {
                        _super._super = {};
                        _super = _super._super;
                    }
                }
            } while (_prototype);

            this.mixin(mixin);
        }
    }
}