Type Signature · #82 · 2026-06-25
What is type `R`?
TypeScript ·Difficulty 1/3
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' | 'd';
type R = Exclude<T, 'a' | 'c'>;
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