Type Signature · #62 · 2026-06-05
What is type `Token`?
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.
type Color = 'red' | 'blue';
type Size = 'sm' | 'lg';
type Token = `${Color}-${Size}`;
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