Flatten Array - Lucas Otero

flattenArray.js

let array = [[1,2,[3]],4]
let newArray = []

const FlattenArray = array => {
  for (let i = 0; i < array.length; i++) {
  	typeof array[i] === 'object' ? FlattenArray(array[i]) : newArray.push(array[i])
  }
  return newArray
}