Type Signature · #13 · 2026-04-17

What is the type of `palette.red`?

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.

const palette = {
  red: [255, 0, 0],
  green: '#00ff00',
} satisfies Record<string, string | number[]>;

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Press 1 through 4, or tap a numbered choice, to answer. Back to hub