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TypeScript Essentials

Lesson 3 of 3 · 5 min

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Utility Types

Explore built-in utility types like Partial, Pick, Omit, and Record to transform types without rewriting them from scratch. This outline is in progress — expect a short read until full lessons ship.

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  • What does Partial<T> do?Show answer

    Answer

    It makes every property of T optional — useful for update payloads.
  • Pick vs Omit — which keeps listed keys?Show answer

    Answer

    Pick keeps only the listed keys; Omit removes them and keeps the rest.
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