branded-types

SKILL.md

TypeScript uses structural typing, but sometimes you need nominal typing - values that are distinct because you SAY they are, not because they have different shapes. Brands let you do this without runtime overhead.

You can't actually create a value that is both a string and has a brand property:

Response: Type aliases don't prevent mixing up different string types.

Úselo cuando los tipos primitivos necesiten distinción semántica. Úselo cuando los tipos de cadenas o números tengan significados diferentes. Úselo cuando necesite una escritura nominal. Fuente: marius-townhouse/effective-typescript-skills.

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