TypeScript Fundamentals — Keyof & Type Query (Ep 12)
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TypeScript Fundamentals — Keyof & Type Query (Ep 12)
TypeScript can read type information directly from existing data instead of redefining structures manually. With typeof, we can capture the type shape of a real object. Then keyof extracts all of its property names and converts them into a union of keys. In this example, the user object becomes the source of truth for the type system. By ...
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