Add warning if is is set and tries to update

facebook · Apr 10, 2023 · 0bd9a67 · 0bd9a67
1 parent d629f8b
commit 0bd9a67
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/packages/react-dom-bindings/src/client/ReactDOMComponent.js b/packages/react-dom-bindings/src/client/ReactDOMComponent.js
@@ -657,6 +657,14 @@ function setProp(
       );
       break;
     // Properties that should not be allowed on custom elements.
+    case 'is': {
+      if (__DEV__ && prevValue != null) {
+        console.error(
+          'Cannot update the "is" prop after it has been initialized.',
+        );
+      }
+      break;
+    }
     case 'innerText':
     case 'textContent':
       if (enableCustomElementPropertySupport) {