DropdownHolder Example #2

dropdownholder2.js

type AlertType = 'info' | 'warn' | 'error' | 'success'

export type DropdownType = {
  alertWithType: (type: AlertType, title: string, message: string) => void
}

export class DropDownHolder {
  static dropDown: DropdownType

  static setDropDown(dropDown: DropdownType) {
    this.dropDown = dropDown
  }

  static alert(type: AlertType, title: string, message: string) {
    this.dropDown.alertWithType(type, title, message)
  }
}
// ... 
// then call
DropDownHolder.alert('error', 'Title', 'error message')