/**
 * The `Choose` kind: one option from a list that opens under the question.
 *
 * A list opens only when the options need reading, so each carries the facts
 * that tell it apart. The caret stands in the gutter beside the option `enter`
 * takes. The list shows as many options as the height it is given allows and
 * names how many it left out above and below, so it never scrolls the
 * terminal; the window follows the caret. Neither the reducer nor the view touches the terminal.
 */
import type { Doc } from "../doc.js";
import { type AskKey, type AskKind, type AskReducerAction, type ChooseAsk, type ChooseOption } from "./ask.js";
/** Which option the caret stands on. */
export interface ChooseState {
    readonly index: number;
}
export type ChooseAction<A> = AskReducerAction<ChooseState, ChooseOption<A>>;
/** The question opens on its selected option, else on its first. */
export declare const initialChooseState: <A>(ask: ChooseAsk<A>) => ChooseState;
/**
 * One key against one list. The arrows move the caret and stop at either end,
 * so holding a key never wraps a person back to where they started; `enter`
 * takes the option under the caret; escape and an interrupt cancel. Any other
 * key leaves the list as it stood.
 */
export declare const reduceChoose: <A>(ask: ChooseAsk<A>, state: ChooseState, key: AskKey) => ChooseAction<A>;
/** The question as the live scene shows it in `rows` lines while it stands open. */
export declare const chooseDoc: <A>(ask: ChooseAsk<A>, state: ChooseState, rows: number) => Doc;
/** The one transcript line an answered list leaves behind: the option's title. */
export declare const chooseAnswer: <A>(ask: ChooseAsk<A>, option: ChooseOption<A>) => Doc;
/** A `Choose` as the `Screen` runs it. */
export declare const chooseKind: <A>(ask: ChooseAsk<A>) => AskKind<ChooseState, A>;
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