CODEWITHSUNDEEP
javascriptecmascript-6
Aldo Benardes
Aldo Benardes

Reputation: 48

Copy an inherited class to another in ES6

anyone knows how to get all properties from an inherited class and put the current properties in just one Object with ES6?

export class MainClass  {

   constructor(classInstance) {} 

   myMethodMain {
     //doSomhethig
   }  
}

file 2

class Another extends MainClass {

  constructor(config) {
      this.name = 'testing';
  }

  myMethodAnother {
  //doSomhethig
  }
}

file 3

class RandomClass {
    constructor() {
      this.name = 'test';
    }
    myMethodRamdonChild { 
    //doSomhethig
    }
}

file 3

class RandomChild extends RandomClass {
    myMethodRamdonChild {
    //doSomhethig
   }
}

export const myMainClass = new Another(new RandomChild());

I need in the constructor of my MainClass copy all properties from RandomChild and the super class RandomClass and maintain the current properties from my current class too. In the final i need an Object with all properties like that.

newObject{
  myMethodMain {
  //doSomhethig
  }
  myMethodAnother {
  //doSomhethig
  }
  myMethodRamdonChild { 
    //doSomhethig
  }
  myMethodRamdonChild {
    //doSomhethig
  }
}

I have tried to use(_.merge, _.copy, angular.copy, angular.merge, $.merge, Object.assign, Object.merge) and other methods.

Important: I can't change my current structure

Upvotes: 2

Views: 248

Answers (1)

Aldo Benardes
Aldo Benardes

Reputation: 48

i solved my problem with this.

export const bind = (target) => (obj) => isFunction(target) ? target.bind(obj) : target;

export const pack = (keys) => (obj) => keys.reduce((res, key) => Object.assign(res, {[key]: bind(obj[key])(obj)}), {});

export const getAllProperties = (o) => {
    let results = [];

    function properties(obj) {
        let props, i;
        if (obj == null) {
            return results;
        }
        if (typeof obj !== 'object' && typeof obj !== 'function') {
            return properties(obj.constructor.prototype);
        }
        props = Object.getOwnPropertyNames(obj);
        i = props.length;
        while (i--) {
            if (!~results.indexOf(props[i])) {
                results.push(props[i]);
            }
        }
        return properties(Object.getPrototypeOf(obj));
    }

    return properties(o);
};

Object.assign(self, pack(getAllProperties(jmi))(jmi));

self has all properties from my classes :)

Upvotes: 1

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