Javascript composition example

airplanes.js

const Airplane = {
  getName() {
    return `${this.name}`
  }
}

const AirbusA380 = { 
  name: 'Airbus A380',
  getName() {
    return  `${Airplane.getName.call(this)} of ${this.airline}`
  }
}

const Cessna = { 
  name: 'Cessna'
}


// define factory functions (airbusA380, cessna)
const airbusA380 = (state) => Object.assign(
  {},
  Airplane,
  AirbusA380,
  state
)

const cessna = (state) => Object.assign(
  {},
  Airplane,
  Cessna,
  state
)

// create instances of airplanes
const emiratesAirbus = airbusA380({
  airline: 'Emirates'
})

const privateCessnaJet = cessna()

console.log(emiratesAirbus.getName()) // prints "Airbus A380 of Emirates"
console.log(privateCessnaJet.getName()) // prints "Cessna"