JavaScript: Async constructor

async.class.js

class MyFirstClass {
  constructor() {
    return new Promise(async (resolve, reject) => {
      try {
        resolve(this);
      } catch(error) {
      	reject(error);
      }
    });
  }
}

/*
 * Extending: if parent constructor cannot fail/reject/throw
 */
class MySecondClass extends MyFirstClass {
  constructor() {
	super();
    
    return new Promise(async (resolve, reject) => {
      try {
        resolve(this);
      } catch(error) {
      	reject(error);
      }
    });
  }
}

/*
 * Extending: if parent constructor can fail/reject/throw
 */
class MySecondClass extends MyFirstClass {
  constructor() {
  	try {
    	super();
    
      return new Promise(async (resolve, reject) => {
        try {
          resolve(this);
        } catch(error) {
          reject(error);
        }
      });
    } catch(error) {
    	return Promise.reject(error);
    }
  }
}

async () => {
	await new MyFirstClass();
}