Handle tab input being undefined (#2468)

## Checklist

- [/] I have added
[tests](https://www.cursorless.org/docs/contributing/test-case-recorder/)
- [/] I have updated the
[docs](https://github.com/cursorless-dev/cursorless/tree/main/docs) and
[cheatsheet](https://github.com/cursorless-dev/cursorless/tree/main/cursorless-talon/src/cheatsheet)
- [/] I have not broken the cheatsheet

Author: AndreasArvidsson

packages/cursorless-vscode/src/ide/vscode/VscodeFocusEditor.ts

@@ -2,6 +2,7 @@ import { getCellIndex } from "@cursorless/vscode-common";
 import {
   commands,
   NotebookDocument,
+  TabInputTextDiff,
   TextEditor,
   ViewColumn,
   window,
@@ -58,12 +59,15 @@ function getViewColumn(editor: TextEditor): ViewColumn | undefined {
   }
   const uri = editor.document.uri.toString();
   const tabGroup = window.tabGroups.all.find((tabGroup) =>
-    tabGroup.tabs.find(
-      (tab: any) =>
-        tab.input.uri?.toString() === uri ||
-        tab.input.original?.toString() === uri ||
-        tab.input.modified?.toString() === uri,
-    ),
+    tabGroup.tabs.find((tab) => {
+      if (tab.input instanceof TabInputTextDiff) {
+        return (
+          tab.input.original.toString() === uri ||
+          tab.input.modified.toString() === uri
+        );
+      }
+      return (tab as any).input?.uri?.toString() === uri;
+    }),
   );
   return tabGroup?.viewColumn;
 }

packages/cursorless-vscode/src/ide/vscode/isDiffEditorOriginal.ts

@@ -1,4 +1,4 @@
-import { TextEditor, window } from "vscode";
+import { TabInputTextDiff, TextEditor, window } from "vscode";
 
 /**
  * @param editor The editor to check
@@ -10,6 +10,10 @@ export function isDiffEditorOriginal(editor: TextEditor): boolean {
   }
   const uri = editor.document.uri.toString();
   return window.tabGroups.all.some((tabGroup) =>
-    tabGroup.tabs.find((tab: any) => tab.input.original?.toString() === uri),
+    tabGroup.tabs.find(
+      (tab) =>
+        tab.input instanceof TabInputTextDiff &&
+        tab.input.original.toString() === uri,
+    ),
   );
 }