import type { InterviewStep } from './interview-steps.js';
/** Normalized answer types after UI adapter processing */
export type AnswerValue = string | string[] | boolean;
/** Serializable interview state for persistence/resume */
export interface InterviewState {
    currentStepId: string | null;
    answers: Record<string, AnswerValue>;
    isComplete: boolean;
}
/** Result of submitting an answer */
export type SubmitResult = {
    success: true;
} | {
    success: false;
    error: string;
};
/**
 * UI-agnostic interview state machine.
 *
 * Usage:
 *   const sm = new InterviewStateMachine(steps);
 *   const question = sm.nextQuestion();
 *   if (question) {
 *     const result = sm.submitAnswer(question.id, userValue);
 *   if (result.success) {
 *     const next = sm.nextQuestion();
 *   }
 *   }
 */
export declare class InterviewStateMachine {
    private steps;
    private answers;
    private currentIndex;
    private complete;
    constructor(steps: InterviewStep[]);
    /** Get the current serializable state */
    getState(): InterviewState;
    /** Restore state (e.g., after agent reconnect) */
    restoreState(state: InterviewState): void;
    /** Get the current step without advancing (useful after restoreState) */
    currentQuestion(): InterviewStep | null;
    /** Get the next unanswered step that passes its condition */
    nextQuestion(): InterviewStep | null;
    /**
     * Submit an answer for the current step.
     * Validates the value using the step's validate function if present.
     * Does NOT advance — call nextQuestion() separately to get the next step.
     */
    submitAnswer(id: string, value: unknown): SubmitResult;
    /** Whether the interview has reached the end */
    isComplete(): boolean;
    /** Get the collected answers (same shape as legacy answers map) */
    getResult(): Record<string, AnswerValue>;
    /** Get answers cast to unknown for compat with legacy init functions */
    getResultUnknown(): Record<string, unknown>;
    private currentStepId;
    private normalizeValue;
}
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