Why types; basic annotations
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
- what TypeScript is (types erased at build)
string,number,boolean, arrays, tuples- type inference
anyvsunknown(intro)- running
tsc
Words you will know
What you will practise
- type 10 functions
Interview questions this answers
- Why use TypeScript? Does it check types at runtime?
- What is the difference between
anyandunknown?