Parameterize a reusable interface.
Section: Generics
Generic interface
typescript
typescript
interface ApiResponse<T> {
data: T;
error?: string;
}Explanation
Generic interfaces are ideal for API wrappers and paginated result types.
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Same sheet · prioritizing Generics
Generic identity function
Use a type parameter for reusable function typing.
Generic array helper
Write array helpers that preserve element types.
Constrain generic types
Require a minimum shape for a type parameter.
Constrain a key parameter with `keyof`
Accept only valid property names for a given object type.