gistfile1.txt

// #1

class User {
	public id: string
	public password: string
	public emails: Email[]
	public deletedAt: Date | null
}

class Email {
	public id: string
	public value: string
	public isActivated: boolean
	public main: boolean
}

class UserService {
	registerNewUser(password: string, email: string) {
		// ...
  }

	changeUserEmail(user: User, newEmail: string) {
		// ...
  }

	deleteUser(user: User) {
		// ...
  }
}

// #2

type User = {
	id: string
	password: string
	emails: Email[]
	deletedAt: Date | null
}

type Email = {
	id: string
	value: string
	isActivated: boolean
	main: boolean
}

const registerNewUser = (password: string, email: string) => {
  // ...
}

const changeUserEmail = (user: User, newEmail: string) => {
  // ...
}

const deleteUser = (user: User) => {
  // ...
}