Type alias GenerateMappingFn

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