Skip to main content

Type Signature · #4 · 2026-04-08

What is the type of `rest`?

TypeScript ·Difficulty 2/3

How to play

Read the TypeScript snippet and pick the correct type from four choices. Think about inference, narrowing, and utility types. Press 1–4 or click to answer.

const [first, ...rest] = [1, 'a', true];

Loading your progress...

Press 1 through 4, or tap a numbered choice, to answer. Back to hub