CodeRoll | Frontend

let randomValue = { name: "Lydia" }
randomValue = 23

if (!typeof randomValue === "string") {
  console.log("It's not a string!")
} else {
  console.log("Yay it's a string!")
}

const createMember = ({ email, address = {}}) => {
  const validEmail = /.+@.+\..+/.test(email)
  if (!validEmail) throw new Error("Valid email pls")

  return {
    email,
    address: address ? address : null
  }
}

const member = createMember({ email: "my@email.com" })
console.log(member)

const keys = ["name", "age"]
const values = ["Lydia", 22]

const method = /* ?? */
Object[method](keys.map((_, i) => {
  return [keys[i], values[i]]
})) // { name: "Lydia", age: 22 }

const promise1 = Promise.resolve('First')
const promise2 = Promise.resolve('Second')
const promise3 = Promise.reject('Third')
const promise4 = Promise.resolve('Fourth')

const runPromises = async () => {
  const res1 = await Promise.all([promise1, promise2])
  const res2  = await Promise.all([promise3, promise4])
  return [res1, res2]
}

runPromises()
  .then(res => console.log(res))
  .catch(err => console.log(err))

const user = {
  email: "my@email.com",
  updateEmail: email => {
    this.email = email
  }
}

user.updateEmail("new@email.com")
console.log(user.email)