const defaultArgs = {
  like: false
}

const dependencies = {
  goToExternalService: require('pathToExternalService')
}

//a binary function...
/*The first argument is a JSON as the list of arguments*/
/*The second argument is the injection*/
function foo(args, injection) {
  const { language, like } = Object.assign({}, defaultArgs, args) //do not use args directly
  const { goToExternalService } = Object.assign({}, dependencies, injection) //neither injection

  return goToExternalService(language, like)
}

//...consumed as unitary!
foo({ language: 'js', like: true })
foo({ language: 'c#', like: true })
foo({ language: 'java' })