Interface FactoryDefinition

types/index.d.ts:179–183

  // Captures the result of a `Factory.extend()` call
  interface FactoryDefinition<Data extends {} = {}> {
    extend<NewData>(
      data: WithFactoryMethods<NewData>
    ): FactoryDefinition<Assign<Data, FlattenFactoryMethods<NewData>>>;
  }

  type WithFactoryMethods<T> = {
    [K in keyof T]: T[K] | ((n: number) => T[K]);