Add flattenObject, unflattenObject

Tagged and tested. Quite complex methods btw.

test/unflattenObject/unflattenObject.js

@@ -0,0 +1,19 @@
+const unflattenObject = obj =>
+Object.keys(obj).reduce((acc, k) => {
+if (k.indexOf('.') !== -1) {
+const keys = k.split('.');
+Object.assign(
+acc,
+JSON.parse(
+'{' +
+keys
+.map((v, i) => (i !== keys.length - 1 ? `"${v}":{` : `"${v}":`))
+.join('') +
+obj[k] +
+'}'.repeat(keys.length)
+)
+);
+} else acc[k] = obj[k];
+return acc;
+}, {});
+module.exports = unflattenObject;