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    Type Alias Brand<Type, Name>Internal

    Brand: Type & { "[___brand]": Name }

    An interface for creating branded types, which create a more specific and unique data type with greater clarity and specificity,

    Type Parameters

    • Type

      The real type to use (e.g. string, boolean, etc.)

    • Name

      The name of this type (e.g. path, sourceRef, etc.)

    type Path = Branded<string, "path">

    function getSelfPath(path: Path): Delta {
      // ...
    }

    https://egghead.io/blog/using-branded-types-in-typescript