Fix bug where users are unable to re-enter disconnected terminals. (#8765)

packages/cli/src/ui/hooks/useFocus.ts

@@ -6,6 +6,7 @@
 
 import { useStdin, useStdout } from 'ink';
 import { useEffect, useState } from 'react';
+import { useKeypress } from './useKeypress.js';
 
 // ANSI escape codes to enable/disable terminal focus reporting
 export const ENABLE_FOCUS_REPORTING = '\x1b[?1004h';
@@ -44,5 +45,18 @@ export const useFocus = () => {
     };
   }, [stdin, stdout]);
 
+  useKeypress(
+    (_) => {
+      if (!isFocused) {
+        // If the user has typed a key, and we cannot possibly be focused out.
+        // This is a workaround for some tmux use cases. It is still useful to
+        // listen for the true FOCUS_IN event as well as that will update the
+        // focus state earlier than waiting for a keypress.
+        setIsFocused(true);
+      }
+    },
+    { isActive: true },
+  );
+
   return isFocused;
 };