Fix rebuilding plugins with intern references in dev mode when started as flipper-server

Summary: require.resolve conflicts with require monkey patch in flipper-server

Reviewed By: mweststrate

Differential Revision: D41917678

fbshipit-source-id: 3bcd35ec4090cda85c372f23d6f8d0bcd9e7c74d

desktop/pkg-lib/src/runBuild.tsx

@@ -17,10 +17,12 @@ const resolveFbStubsToFbPlugin: Plugin = {
   name: 'resolve-fb-stubs-to-fb',
   setup({onResolve}) {
     onResolve({filter: /fb-stubs/}, (args) => {
+      let moduleName = args.path.replace('fb-stubs', 'fb');
+      if (!moduleName.endsWith('.tsx')) {
+        moduleName = `${moduleName}.tsx`;
+      }
       return {
-        path: require.resolve(args.path.replace('fb-stubs', 'fb'), {
-          paths: [args.resolveDir],
-        }),
+        path: path.resolve(args.resolveDir, moduleName),
       };
     });
   },