Make react devtools removing property fail safely

CompuIves · CompuIves · commit 72dbe969bfa4 · 2020-01-18T19:04:17.000+01:00
diff --git a/packages/app/src/sandbox/eval/presets/create-react-app/v3.ts b/packages/app/src/sandbox/eval/presets/create-react-app/v3.ts
@@ -27,8 +27,16 @@ async function initializeReactDevTools() {
     );
     // The dispatch needs to happen before initializing, so that the backend can already listen
     dispatch({ type: 'activate-react-devtools' });
-    // @ts-ignore We need to make sure that the existing chrome extension doesn't interfere
-    delete window.__REACT_DEVTOOLS_GLOBAL_HOOK__;
+
+    // @ts-ignore
+    if (typeof window.__REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined') {
+      try {
+        // @ts-ignore We need to make sure that the existing chrome extension doesn't interfere
+        delete window.__REACT_DEVTOOLS_GLOBAL_HOOK__;
+      } catch (e) {
+        /* ignore */
+      }
+    }
     // Call this before importing React (or any other packages that might import React).
     initializeDevTools(window);
     activate(window);
