Type Signature · #37 · 2026-05-11
What is type `R`?
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.
async function fetchName(): Promise<string> {
return 'Alice';
}
type R = ReturnType<typeof fetchName>;
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Press 1 through 4, or tap a numbered choice, to answer. Back to hub