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Quiz: Type Composition and Variants

Quiz: Type Composition and Variants

Reinforce your understanding of type composition and variant modeling with five multiple-choice questions.

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1

What is the type of id in Merged below?

type A = { id: string };
type B = { id: number };
type Merged = A & B;
A)

id: string | number

B)

id: never

C)

id: any

D)

TypeScript throws an error at declaration time.

Question 1 of 50 attempted
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