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/eslint-plugin-react/lib/util/isCreateElement.js

@@ -0,0 +1,34 @@
+'use strict';
+
+const pragmaUtil = require('./pragma');
+const isDestructuredFromPragmaImport = require('./isDestructuredFromPragmaImport');
+
+/**
+ * Checks if the node is a createElement call
+ * @param {Context} context - The AST node being checked.
+ * @param {ASTNode} node - The AST node being checked.
+ * @returns {boolean} - True if node is a createElement call object literal, False if not.
+*/
+module.exports = function isCreateElement(context, node) {
+  if (!node.callee) {
+    return false;
+  }
+
+  if (
+    node.callee.type === 'MemberExpression'
+    && node.callee.property.name === 'createElement'
+    && node.callee.object
+    && node.callee.object.name === pragmaUtil.getFromContext(context)
+  ) {
+    return true;
+  }
+
+  if (
+    node.callee.name === 'createElement'
+    && isDestructuredFromPragmaImport(context, node, 'createElement')
+  ) {
+    return true;
+  }
+
+  return false;
+};