sendAction

components.button-wrapper-1.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
  	buttonClick() {    
    	this.sendAction('buttonClick');
    }
  }   
});

components.button-wrapper-2.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
  	buttonClick() {
      console.log('hello from wrapper-2.js');        
    	this.sendAction('buttonClick');
    }
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  actions: {
  	buttonClick() {
      console.log('hello from app.js');
    	window.alert('I am clicked');
    }
  }
});

templates.application.hbs

{{button-wrapper-1 buttonClick="buttonClick"}}

templates.components.button-wrapper-1.hbs

{{button-wrapper-2 buttonClick="buttonClick"}}

templates.components.button-wrapper-2.hbs

<button {{action "buttonClick"}}>Button</button>

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}