How to get ISO string from date in Javascript

type Components = {
  day: number,
  month: number,
  year: number
}

export default class DateFormatter {
  // 2018-11-11T00:00:00
  static ISOStringWithoutTimeZone = (date: Date): string => {
    const components = DateFormatter.format(DateFormatter.components(date))
    return `${components.year}-${components.month}-${components.day}T00:00:00`
  }

  static format = (components: Components) => {
    return {
      day: `${components.day}`.padStart(2, '0'),
      month: `${components.month}`.padStart(2, '0'),
      year: components.year
    }
  }

  static components = (date: Date): Components => {
    return {
      day: date.getDate(),
      month: date.getMonth() + 1,
      year: date.getFullYear()
    }
  }
}