[components] Work around tsconfig issue

packages/@sanity/components/src/portal/context.ts

@@ -1,19 +1,8 @@
 import {createContext} from 'react'
+import {defaultContextValue} from './defaultContextValue'
 
 export interface PortalContextInterface {
   element: HTMLElement
 }
 
-let globalElement: HTMLDivElement | null = null
-
-const defaultContextValue = {
-  get element() {
-    if (globalElement) return globalElement
-    globalElement = document.createElement('div')
-    globalElement.setAttribute('data-portal', 'default')
-    document.body.appendChild(globalElement)
-    return globalElement
-  }
-}
-
 export const PortalContext = createContext<PortalContextInterface>(defaultContextValue)

packages/@sanity/components/src/portal/defaultContextValue.js

@@ -0,0 +1,13 @@
+let globalElement = null
+
+export const defaultContextValue = {
+  get element() {
+    if (globalElement) return globalElement
+
+    globalElement = document.createElement('div')
+    globalElement.setAttribute('data-portal', 'default')
+    document.body.appendChild(globalElement)
+
+    return globalElement
+  }
+}