Loïc Lekane loicDev1

## utils.ts
const userName : string = 'devo21'

const toUpperFirstLetter = function([firstLetter , ...rest]) : string{
  return firstLetter.toUpperCase() + rest.join()
}

console.log(toUpperFirstLetter(userName))
	const userName : string = 'devo21'

	const toUpperFirstLetter = function([firstLetter , ...rest]) : string{
	return firstLetter.toUpperCase() + rest.join()
	}

	console.log(toUpperFirstLetter(userName))