Enums aren't type safe in typescript

Sounds like a major flaw.

it’s Enuma associated with data without having to repeat yourself

If you have to define the Enums in one place and then repeat them all in another just to associate data with each one you’ve failed

Maybe you can elaborate but enums in Java or Kotlin easily have data associated with them.

    enum class Color(val rgb: Int) {
        RED(0xFF0000),
        GREEN(0x00FF00),
        BLUE(0x0000FF)
    }