Array.map I - strings

Write a function called mapToUppercase(names), which takes an array of strings called names as its argument. This function should return a new array with all of the strings transformed to UPPERCASE.

Instructions

• The input array names will contain only strings.
• Do not modify the existing array. Return a new array with transformed strings.
• If the input array names is empty, then return an empty array.

Example test cases

1const names1 = ['john', 'mary', 'bob', 'jane'];
2const uppercasedNames1 = mapToUppercase(names1);
3console.log(uppercasedNames1);
4// Output: ['JOHN', 'MARY', 'BOB', 'JANE']
5
6const names2 = ['Alice', 'Bob', 'Charlie'];
7const uppercasedNames2 = mapToUppercase(names2);
8console.log(uppercasedNames2);
9// Output: ['ALICE', 'BOB', 'CHARLIE']
10
11const names3 = [];
12const uppercasedNames3 = mapToUppercase(names3);
13console.log(uppercasedNames3);
14// Output: []

Hints

• You can create a new array, loop over the input array names and push the transformed element to the new array.
• You can use the built-in method .map() method.
• Use the toUpperCase() method to transform a string to UPPERCASE.