Simple date function that can be used anywhere. For now it has only Russian Language 👅 If you wish more, feel free to make push requests

GetDayNameFromDate.js

const days = [
 'Воскресенье','Понедельник', 'Вторник', 'Среда', 'Четверг', 'Пятница', 'Суббота'
]

const getDayName = (date) => {
  if(date)
    if(typeof date === 'number')
      return days[new Date(date).getDay()]
    else if (typeof date === 'object')
      return days[date.getDay()]
  else 
    return 'You must provide date parameter'
}

Save your time and thank me)