import { CharacterReader } from './character-reader-level-0';
export type JoinGetAction = (index: number, emittedSomething: number) => 'continue' | 'fork' | 'stop';
/**
 * Join multiple `CharacterReader`'s together.
 *
 * It has understanding of the `split` type.
 *
 * `getAction` should return
 * - `continue`: This results in `getReader` being called with the next index
 *   and a new `CharacterReader` should be returned
 * - `fork`: This results in the reader splitting, with the split reader being empty,
 *   and then `getReader` is called with the next index and a new `CharacterReader`
 *   should be returned
 * - `stop`: This means the reader will end
 */
export declare function join(getAction: JoinGetAction, getReader: (index: number) => CharacterReader): CharacterReader;
/**
 * Joins an array of `CharacterReader`'s together, with  understanding
 * of the `split` type. If a reader splits, when the split reader ends,
 * the next `CharacterReader` in the array will follow.
 */
export declare function joinArray(input: readonly (() => CharacterReader)[]): CharacterReader;