/**
 * The `Confirm` kind: a question answered by one lettered key.
 *
 * A reducer takes a key and answers with the next state, a submission, or a
 * cancellation; a view takes that state to a document. Neither touches the
 * terminal, so both are ordinary pure functions. The choice `enter` takes is
 * shown by a filled chip and by its capital letter, so the default survives a
 * terminal without color; risk flips which choice comes first, and nothing
 * else about the question changes.
 */
import type { Doc } from "../doc.js";
import { type AskKey, type AskKind, type AskReducerAction, type ConfirmAsk, type ConfirmChoice } from "./ask.js";
/** Which choice `enter` takes. */
export interface ConfirmState {
    readonly index: number;
}
export type ConfirmAction<A> = AskReducerAction<ConfirmState, ConfirmChoice<A>>;
/** The question opens on its default, which is its first choice. */
export declare const initialConfirmState: ConfirmState;
/**
 * One key against one question. A choice's own key answers it outright; the
 * arrows and tab move which choice `enter` would take; escape and an interrupt
 * cancel. Any other key leaves the question exactly as it stood, because a
 * mistyped letter is not an answer and has nothing to report.
 */
export declare const reduceConfirm: <A>(ask: ConfirmAsk<A>, state: ConfirmState, key: AskKey) => ConfirmAction<A>;
/** The question as the live scene shows it while it stands open. */
export declare const confirmDoc: <A>(ask: ConfirmAsk<A>, state: ConfirmState) => Doc;
/** The one transcript line an answered question leaves behind. */
export declare const confirmAnswer: <A>(ask: ConfirmAsk<A>, choice: ConfirmChoice<A>) => Doc;
/** A `Confirm` as the `Screen` runs it. */
export declare const confirmKind: <A>(ask: ConfirmAsk<A>) => AskKind<ConfirmState, A>;
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