/**
 * One visit of an `ask` node: its question put to a person, and what not
 * answering gives.
 *
 * Not answering is a value wherever the file says what it is: `default:`
 * when nobody answers, there or in time, and `answered: false` when the card
 * offers "that's enough". Only a question that has neither fails, with
 * `nobody` or `timeout`. Declining a card that offers no "enough" is the
 * run's stop key, pressed on the card that holds it.
 */
import type { Answer, Asking, Question } from "../../ask.ts";
import type { GitResult } from "../../git/index.ts";
import type { CheckedAskNode } from "../checked.ts";
import { type Visited } from "./ended.ts";
import type { Here } from "./walk.ts";
/** A question as it goes to the person: the question, and how the card puts it. */
export type Card = {
    readonly question: Question;
    readonly asking: Omit<Asking, "signal">;
};
/**
 * What the person's side gave: the node's output, the person declining the
 * card, or nobody answering, there or before the node's `timeout:`.
 */
export type Heard = {
    readonly output: unknown;
} | {
    readonly declined: true;
} | {
    readonly missed: "nobody" | "timeout";
};
/** What an ask visit needs from the run around it. */
export type AskingRun = {
    /** The run's signal: aborted, nothing starts and nothing catches the failure. */
    readonly signal: AbortSignal;
    /** Puts `card` for the visit `path` of `node`; aborting `cut` takes it down. */
    ask(node: CheckedAskNode, path: string, card: Card, cut: AbortSignal): Promise<Heard>;
    /** What `tree` changed since `HEAD`, as `diff` reads it. */
    diff(tree: string | undefined): Promise<GitResult<string>>;
    /** Stops the whole run, as its stop key does. */
    stop(): void;
};
/** Visits `node` at `path`. A stop or a cut is read off the signals, never off what the person's side says. */
export declare function visitAsk(run: AskingRun, node: CheckedAskNode, path: string, at: Here): Promise<Visited>;
/** What `node` outputs once `answer` came back: a choice card's pick, a yes or no, or a free text. */
export declare function outputOf(node: CheckedAskNode, answer: Answer): unknown;
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