fix

Author: AlemTuzlak

package.json

@@ -2,7 +2,7 @@
   "name": "remix-development-tools",
   "description": "Remix development tools - a set of tools for developing/debugging Remix.run apps",
   "author": "Alem Tuzlak",
-  "version": "4.0.2",
+  "version": "4.0.3",
   "license": "MIT",
   "keywords": [
     "remix",

src/client/hooks/useOpenElementSource.ts

@@ -51,10 +51,12 @@ const useOpenElementSource = () => {
         const source = fiberNode?._debugOwner?._debugSource ?? fiberNode?._debugSource;
         const line = source?.fileName?.startsWith("/") ? originalSource?.lineNumber : source?.lineNumber;
         const fileName = source?.fileName?.startsWith("/") ? originalSource?.fileName : source?.fileName;
-        return sendJsonMessage({
-          type: "open-source",
-          data: { source: fileName, line, column: 0 },
-        });
+        if(fileName && line){ 
+          return sendJsonMessage({
+            type: "open-source",
+            data: { source: fileName, line, column: 0 },
+          });
+        }
       }
     } 
   });