dry-types

Derive TypeScript types from a base interface by applying utility types like Pick, Partial, and keyof to create related variants, ensuring multiple types share fields and stay automatically synced to a single source of truth.

The best way to keep API response and form types aligned is to define a single base interface and derive update or subset models using TypeScript type operations like Partial and Pick, eliminating duplicated definitions that cause inconsistencies.

Yes, you need prerequisite knowledge of TypeScript utility types and generics to reliably apply operations like extends, keyof, and Pick for deriving related types and promoting base definitions with extensions.

Use Partial to create optional versions of base fields for update models, and use Pick to create subsets by extracting specific fields, reducing drift across interfaces while keeping derived types synced to the original definition.

Defining duplicate TypeScript interfaces causes bugs because manual updates lead to inconsistencies and drift when fields change; deriving types from a single source of truth using type operations prevents these maintenance burdens.