Function: req()

function req<Req>(): ReqMarker<Req>;

Creates a typed requirement marker for defineModelMixin.

Type Parameters

Type Parameter	Description
Req extends object	Shape that must exist on the base model instance.

Returns

ReqMarker<Req>

Example

const producerMixin = defineModelMixin(
  { produced: tProp(types.number, 0) },
  req<{ quantity: number }>()
)