fix(core): propagate connection meta and owner document to popup

packages/core/src/client/webcomponents/state/__tests__/popup.test.ts

@@ -52,6 +52,9 @@ function createMockContext(
     docks: {
       switchEntry: vi.fn(),
     },
+    rpc: {
+      connectionMeta: { backend: 'ws' },
+    },
   } as unknown as DocksContext
 }
 
@@ -175,6 +178,8 @@ describe('dock popup state', () => {
     expect(appRoot).toBeTruthy()
     expect(appRoot.id).toBe('vite-devtools-popup-root')
     expect(appRoot.appended).toHaveLength(1)
+    expect((popup as unknown as { __DEVFRAME_CONNECTION_META__?: unknown }).__DEVFRAME_CONNECTION_META__)
+      .toBe(context.rpc.connectionMeta)
   })
 
   it('hides dock overflow panel when opening popup', async () => {

packages/core/src/client/webcomponents/state/popup.ts

@@ -18,6 +18,7 @@ const PANEL_MAX_SIZE = 100
 const POPUP_MIN_WIDTH = 320
 const POPUP_MIN_HEIGHT = 240
 const MAIN_FRAME_ACTION_HANDLER_KEY = '__VITE_DEVTOOLS_TRIGGER_DOCK_ACTION__'
+const DEVFRAME_CONNECTION_META_KEY = '__DEVFRAME_CONNECTION_META__'
 
 const popupWindow = shallowRef<Window | null>(null)
 const isPopupOpen = shallowRef(false)
@@ -179,6 +180,8 @@ async function mountStandaloneApp(context: DocksContext, popup: Window) {
   popup.document.head?.appendChild(baseStyle)
   popup.document.body.textContent = ''
 
+  ;(popup as Window & { [DEVFRAME_CONNECTION_META_KEY]?: unknown })[DEVFRAME_CONNECTION_META_KEY] = context.rpc.connectionMeta
+
   const appRoot = popup.document.createElement('div')
   appRoot.id = 'vite-devtools-popup-root'
   popup.document.body.appendChild(appRoot)

packages/core/src/client/webcomponents/utils/useIframePanes.ts

@@ -25,7 +25,7 @@ export function useIframePanes(
     container,
     (el) => {
       if (el && !panes.value) {
-        panes.value = markRaw(createIframePanes({ container: el }))
+        panes.value = markRaw(createIframePanes({ container: el, document: el.ownerDocument }))
         stop()
       }
     },