Type Signature · #36 · 2026-05-10
What is the type of `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.
function wrap<T = string>(value: T) {
return { value };
}
const r = wrap(42);
Loading your progress...
Press 1 through 4, or tap a numbered choice, to answer. Back to hub