ts-interface-or-type

Decides whether a TypeScript shape should be declared as an interface or as a type alias, following the official preference for interfaces on object shapes, aliases for unions, tuples, mapped, conditional and template-literal types, and interface extends in place of intersections when specialising a shape. Use when creating, extending or reviewing TypeScript object types, choosing between the two keywords, writing class contracts, or augmenting types owned by a library. Not for runtime JavaScript behaviour, deliberate type-level utility libraries, or languages other than TypeScript.

Version

v1.0.0

Size

13 KB

Updated

2026-10-11

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