class WeekDays { static daysEs = ['Lunes', 'Martes', 'Miércoles', 'Jueves', 'Viernes', 'Sábado', 'Domingo']; static daysEn = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']; constructor (lang) { this.lang = lang; if(WeekDays.instance){ return WeekDays.instance; } WeekDays.instance = this; } getDays(){ return this.lang === 'es' ? this.daysEs : this.daysEn; } }