Inheritance vs Composition in JavaScript

Composition.js

function createProgrammer(name) {
  const programmer = {name}
  return {
    ...programmer,
    ...canCode(programmer)
  }
}

function canCode({ name }) {
  return {
    code: () => console.log(`${name} is coding...`)
  }
}

function canAngular({ name }) {
  return {
    angular: () => console.log(`${name} is creating Angular app...`)
  }
}

function canNodejs({ name }) {
  return {
    nodejs: () => console.log(`${name} is programming on Node JS...`)
  }
}

function createFrontend(name) {
  const programmer = createProgrammer(name)

  return {
    ...programmer,
    ...canAngular(programmer),
    ...canReactAndVue(programmer)
  }
}

function createBackend(name) {
  const programmer = createProgrammer(name)

  return {
    ...programmer,
    ...canNodejs(programmer)
  }
}

function createFullstack(name) {
  const programmer = createProgrammer(name)

  return {
    ...programmer,
    ...canNodejs(programmer),
    ...canAngular(programmer)
  }
}

function canReactAndVue({ name }) {
  return {
    react: () => console.log(`${name} is creating React app...`),
    vue: () => console.log(`${name} is creating Vue app...`)
  }
}

const programmer = createProgrammer('Oleg')
programmer.code()

const frontend = createFrontend('Frontend')
frontend.code()
frontend.angular()
frontend.react()
frontend.vue()

const backend = createBackend('Max')
backend.code()
backend.nodejs()

const fullstack = createFullstack('Elena')
fullstack.angular()
fullstack.nodejs()
fullstack.code()

Inheritance.js

class Programmer {
  constructor(name) {
    this.name = name
  }

  code() {
    console.log(`${this.name} is coding...`)
  }
}

class Frontend extends Programmer {
  angular() {
    console.log(`${this.name} is creating Angular app...`)
  }
}

class Backend extends Programmer {
  nodejs() {
    console.log(`${this.name} is programming on Node JS...`)
  }
}

class Fullstack extends Frontend {
  // Bad! Dublicate!
  nodejs() {
    console.log(`${this.name} is programming on Node JS...`)
  }
}

const programmer = new Programmer('Programmer 1')
programmer.code()

const frontend = new Frontend('Frontend')
frontend.code()
frontend.angular()

const backend = new Backend('Max')
backend.code()
backend.nodejs()