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What are branded (nominal) types?

Q: What are branded (nominal) types?

Since TS is structural, you simulate **nominal typing** by intersecting a unique brand: `type UserId = string & { __brand: 'UserId' }`. This prevents accidentally passing a plain string (or a different ID) where a `UserId` is required.

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Since TS is structural, you simulate nominal typing by intersecting a unique brand: type UserId = string & { __brand: 'UserId' }. This prevents accidentally passing a plain string (or a different ID) where a UserId is required.

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