Initial commit: Developer Tools MVP with visual editor

- Complete React app with 7 developer tools
- JSON Tool with visual structured editor
- Serialize Tool with visual structured editor
- URL, Base64, CSV/JSON, Beautifier, Diff tools
- Responsive navigation with dropdown menu
- Dark/light mode toggle
- Mobile-responsive design with sticky header
- All tools working with copy/paste functionality

node_modules/lodash/conformsTo.js

@@ -0,0 +1,32 @@
+var baseConformsTo = require('./_baseConformsTo'),
+    keys = require('./keys');
+
+/**
+ * Checks if `object` conforms to `source` by invoking the predicate
+ * properties of `source` with the corresponding property values of `object`.
+ *
+ * **Note:** This method is equivalent to `_.conforms` when `source` is
+ * partially applied.
+ *
+ * @static
+ * @memberOf _
+ * @since 4.14.0
+ * @category Lang
+ * @param {Object} object The object to inspect.
+ * @param {Object} source The object of property predicates to conform to.
+ * @returns {boolean} Returns `true` if `object` conforms, else `false`.
+ * @example
+ *
+ * var object = { 'a': 1, 'b': 2 };
+ *
+ * _.conformsTo(object, { 'b': function(n) { return n > 1; } });
+ * // => true
+ *
+ * _.conformsTo(object, { 'b': function(n) { return n > 2; } });
+ * // => false
+ */
+function conformsTo(object, source) {
+  return source == null || baseConformsTo(object, source, keys(source));
+}
+
+module.exports = conformsTo;