docs: browserView.webContents can be null

docs/api/browser-view.md

@@ -41,7 +41,7 @@ Objects created with `new BrowserView` have the following properties:
 
 #### `view.webContents` _Experimental_
 
-A [`WebContents`](web-contents.md) object owned by this view.
+A `WebContents | null` property that returns the `WebContents` owned by this view or `null` if the contents are [destroyed](web-contents.md#event-destroyed).
 
 ### Instance Methods
 

lib/browser/api/browser-window.ts

@@ -91,7 +91,9 @@ BrowserWindow.fromWebContents = (webContents: WebContents) => {
 };
 
 BrowserWindow.fromBrowserView = (browserView: BrowserView) => {
-  return BrowserWindow.fromWebContents(browserView.webContents);
+  const { webContents } = browserView;
+  if (!webContents) return null;
+  return BrowserWindow.fromWebContents(webContents);
 };
 
 BrowserWindow.prototype.setTouchBar = function (touchBar) {