Function clientOnly

apps/start/src/components/theme-provider.tsx:11–14

(fn: T)

const AppThemeSchema = z.enum(['light', 'dark']).catch('light');

const clientOnly = <T extends (...args: any[]) => void>(fn: T) => {
  if (typeof window === 'undefined') return (() => {}) as unknown as T;
  return fn;
};

export type UserTheme = z.infer<typeof UserThemeSchema>;
export type AppTheme = z.infer<typeof AppThemeSchema>;