functional-javascript-workshop/exercises/basic_map/problem.md

The basics of functional programming in JavaScript. No libraries required.

# Task

Convert the following code from a for-loop to Array#map:

```js
function doubleAll(numbers) {
  var result = []
  for (var i = 0; i < numbers.length; i++) {
    result.push(numbers[i] * 2)
  }
  return result
}

module.exports = doubleAll
```

## Arguments

* numbers: An Array of 0 to 20 Integers between 0 and 9

## Conditions

* Your solution should use Array.prototype.map()
* Do not use any for/while loops or Array.prototype.forEach.
* Do not create any unnecessary functions e.g. helpers.

## Resources

* https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map

## Boilerplate

```js
function doubleAll(numbers) {
  // SOLUTION GOES HERE
}

module.exports = doubleAll
```