Object - pass by reference

//create spaceship object
let spaceship = {
  'Fuel Type' : 'Turbo Fuel',
  homePlanet : 'Earth'
};

//Function that has object as a parameter that sets the property of 'Fuel Type'
let greenEnergy = obj => obj['Fuel Type'] = 'avocado oil';

//Function that sets/reassigns object as a parameter
let remotelyDisable = obj => obj.disabled = true;

//invoke the function and pass spaceship as the object
greenEnergy(spaceship);
remotelyDisable(spaceship);

//print spaceship to confirm the changes in the properties
console.log(spaceship);

console.log(spaceship['Fuel Type']);
console.log(spaceship.disabled); //disabled property was added