feat(dev): Added react docs for Pattern + refactor

This adds support for not only documenating components, but also
constants and functions that may be exported next to components.

packages/react/components/DiffViewer/index.mjs

@@ -2,7 +2,24 @@ import React from 'react'
 import { diffWords, diffJson } from 'diff'
 import ReactDiffViewer from 'react-diff-viewer-continued'
 
+/**
+ * A method to diff JSON content
+ *
+ * @public
+ * @param {object} from - Once side of the diff
+ * @param {object} to - Other side of the diff
+ * @returns {object}
+ */
 export const diffJSON = (from, to) => diffJson(from, to)
+
+/**
+ * A method to diff string content
+ *
+ * @public
+ * @param {string} from - Once side of the diff
+ * @param {string} to - Other side of the diff
+ * @returns {object}
+ */
 export const diffCheck = (from, to) => diffWords(from, to)
 
 export const DiffViewer = (props) => <ReactDiffViewer {...props} />