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TypeScript Tutorial
BOSS QUIZ
10 questions · 5 minutes · pass at 70% to clear the track.
05:00
Start
Q1.
Week 3 covers…
from TS Bootcamp
SELECT basics
Advanced type system features
Forms
Async only
Q2.
User-defined guard return type is written…
from TS Type Guards
boolean
x is T
asserts x is T
check<T>
Q3.
Intersection of unions yields…
from TS Intersection Types
Cartesian product
Common members only
First union
never always
Q4.
On a value typed "string | number" you can call…
from TS Union Types
Anything
Only members shared by every type in the union
Only string methods
Only number methods
Q5.
For parallel work prefer…
from TS Async / Promises
Sequential await
Promise.all
setTimeout
JSON.parse
Q6.
Make every property optional with…
from TS Utility Types
Partial<T>
Optional<T>
Maybe<T>
Loose<T>
Q7.
Exhaustiveness check uses the type…
from TS Narrowing
unknown
any
never
void
Q8.
Quizzes test…
from TS Quiz
Speed
Recognition (recall comes from exercises)
Typing
Trivia
Q9.
Abstract methods have…
from TS Abstract Classes
Empty body
No body — subclass implements
Static body
Default body
Q10.
Fast modern runner is…
from Running TS — tsx / ts-node
ts-node
tsx
tsr
tsrun
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