Mapped types are a handy TypeScript feature that allow authors to keep their types DRY (“Don’t Repeat Yourself”) Because they tow the line between programming and metaprogramming, they can be difficult to understand at first. We’ll cover some foundational concepts that enable mapped types, then walk through an advanced, real-world example.
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Why use mapped types in TypeScript?Foundational concepts of mapped typesWe made a custom demo for . No really. Click here to check it out .Mapped types: a real-world exampleBonus: a reusable formatter type with genericsConclusionWriting a lot of TypeScript? Watch the recording of our recent TypeScript meetup to learn about writing more readable code.1 Comment
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