Type Signature · #67 · 2026-06-10
What is type `S`?
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 T = 'a' | 'b' | 'c' | 1 | 2;
type S = Extract<T, string>;
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