Type alias GenerateMappingAsyncFn

GenerateMappingAsyncFn: Function & (<R, T>(collection: Collection<T>, transformFn?: TransformFn<T, R> | null, lookupFn?: LookupFn<T, R> | null, validateFn?: ValidateFn<T, R> | null, errLookupFn?: ErrLookupFn | null) => AsyncGenerator<Settled<R>, void, unknown>)