Archived both snippets discussed

countVowels and replaceVowels are now in the archive

snippets_archive/countVowels.md

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+### countVowels
+
+Retuns `number` of vowels in provided string.
+
+Use a regular expression to count the number of vowels `(A, E, I, O, U)` in a `string`.
+
+```js
+const countVowels = str => (str.match(/[aeiou]/gi) || []).length;
+```
+
+```js
+countVowels('foobar'); // 3
+countVowels('gym'); // 0
+```