docs(util): add util JS for code snippets

Author: Ryan A. Johnson

docs/_util.js

@@ -0,0 +1,28 @@
+function stripIndent (rawString) {
+    const match = rawString.match(/^[ \t]*(?=\S)/gm);
+
+    if (!match) {
+        return rawString;
+    }
+
+    const minIndent = Math.min.apply(Math, match.map(x => x.length));
+
+    const reMinIndent = new RegExp(`^[ \\t]{${minIndent}}`, 'gm');
+
+    let strReindented = rawString;
+    if (minIndent > 0) {
+        strReindented = rawString.replace(reMinIndent, '');
+    }
+
+    return strReindented.trim();
+}//stripIndent()
+
+function snippet (raw) {
+    // https://regex101.com/r/hKMzZP/4
+    let normalized = raw.replace(/(\s+^\s+$|\s+(?=>))/gm, '');
+    return stripIndent(normalized);
+}
+
+export default {
+    snippet,
+};