fix: commit untracked theme.ts

ts/util/theme.ts

@@ -0,0 +1,18 @@
+import { ThemeStateType } from '../themes/constants/colors';
+
+export function getOppositeTheme(themeName: string): ThemeStateType {
+  if (themeName.includes('dark')) {
+    return themeName.replace('dark', 'light') as ThemeStateType;
+  }
+  if (themeName.includes('light')) {
+    return themeName.replace('light', 'dark') as ThemeStateType;
+  }
+  // If neither 'dark' nor 'light' is in the theme name, return the original theme name.
+  return themeName as ThemeStateType;
+}
+
+export function isThemeMismatched(themeName: string, prefersDark: boolean): boolean {
+  const isLightTheme = themeName.includes('light');
+  const isDarkTheme = themeName.includes('dark');
+  return (prefersDark && isLightTheme) || (!prefersDark && isDarkTheme);
+}