Object types, unions and narrowing (first look)
Comes up in: Recruiter screen
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
typeandinterface- optional properties
- union types
- narrowing with
typeofandin - literal types
Words you will know
What you will practise
- model API responses
Interview questions this answers
- What is the difference between
typeandinterface?