import { NestedIterable } from './nested-iterable';
export declare function preorderNestedIterableMap<T, U = T>(iterator: NestedIterable<T>, mapping: (t: NestedIterable<T>, previous: U[]) => IterableIterator<[U, NestedIterable<T>]>, previous?: U[]): NestedIterable<U>;
export declare function postorderNestedIterableMap<T, U = T>(iterator: NestedIterable<T>, mapping: (t: IterableIterator<[T, NestedIterable<U>]>, previous: T[]) => IterableIterator<[U, NestedIterable<U>]>, previous?: T[]): NestedIterable<U>;