export function switchCase, K extends keyof T>( data: T | null | undefined, select?: K, ): T[K] | string { if (!data) { return 'Tidak ada data' } const key: K | 'default' = select !== undefined ? select : ('default' as K) // Type assertion needed here if (key in data) { return data[key] } else if ('default' in data) { return data['default'] } else { return 'Data tidak ditemukan' } }