Explain 'Branded Types' for Domain Driven Design.

Updated May 4, 2026

Short answer

Branding simulates nominal typing by adding a unique tag to a type, preventing accidental swaps of identical primitives.

Deep explanation

TS is structural; two strings are identical. Branding intersects a primitive with a unique object property. This forces developers to use specific IDs (e.g., UserId vs AccountId) even if both are strings, catching logic errors at compile-time[cite: 1].

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