TS.04.04 Mid-level

Classes in TypeScript

Comes up in: Low-level design

This concept is being written. It gets the full five steps — explanation, predict, interview angle, practice with tests, and review cards. Here is exactly what it will cover, so you can study it elsewhere in the meantime.

What it covers

implements
access modifiers (private vs #private)
parameter properties (not erasable)
abstract classes
override
class types are structural

Words you will know

access modifierabstract classimplements

What you will practise

type a repository interface + class

Interview questions this answers

What is the difference between TypeScript private and JavaScript #private?