How to overload parent method?

Question

typescript

The parent class has a method:

public getDiaryWeekDay(item: ILessons): string {
    const dateObj = Helper.formatDate(Object.keys(item).shift(), 4);
    return dateObj['n'];
  }

In the child class, I want to overload it:

public getDiaryWeekDay(date: string): string {
    return Helper.formatDate(date, 4)['n'];
  }

This throws a method incompatibility error.

Answer 1

There is no (explicit) method overloading in javascript, so in typescript it is very truncated, taking into account the capabilities of js.
In your case, you can change the parent method to:

public getDiaryWeekDay(item: ILessons | string): string {
    // придется добавить проверку на то, что item - объект
    const dateObj = Helper.formatDate(Object.keys(item).shift(), 4);
    return dateObj['n'];
}