import type { FunnelAnswerKey } from '../sdk/userAnswers.js';
import { type FunnelContractDiagnostic } from '../validation/funnel-contract-diagnostics.js';
import { FUNNEL_STEP_CONTRACTS, type FunnelChoiceDescriptor, type FunnelChoiceOption, type FunnelEmojiChoiceOption, type FunnelStepChoiceContract, type FunnelStepType } from './step-contract.js';
import type { FunnelStepMeta } from './types.js';
export type FunnelChoiceStepType = {
    [Type in FunnelStepType]: (typeof FUNNEL_STEP_CONTRACTS)[Type] extends {
        readonly choice: FunnelStepChoiceContract;
    } ? Type : never;
}[FunnelStepType];
export declare const FUNNEL_CHOICE_STEP_TYPES: readonly FunnelChoiceStepType[];
export type FunnelChoiceValue = string | string[];
export type FunnelChoiceCompletion = {
    answerKey: FunnelAnswerKey;
    value: FunnelChoiceValue;
    selected: Record<string, FunnelChoiceValue>;
};
type FunnelChoiceStepMeta = Pick<FunnelStepMeta, 'id' | 'type' | 'choice'>;
type FunnelChoiceOptions = readonly (FunnelChoiceOption | FunnelEmojiChoiceOption)[];
export declare const MAX_FUNNEL_CHOICE_ITEMS = 4096;
export declare const MAX_FUNNEL_CHOICE_IDENTIFIER_LENGTH = 256;
export declare const MAX_FUNNEL_CHOICE_CONTENT_STRING_LENGTH = 4096;
export type FunnelChoiceDescriptorParseResult = {
    ok: true;
    descriptor: FunnelChoiceDescriptor;
    contract: FunnelStepChoiceContract;
    stepType: FunnelChoiceStepType;
} | {
    ok: false;
    issue: 'not-choice-step-type' | 'invalid-descriptor-shape' | 'invalid-answer-key' | 'invalid-allow-empty';
};
export declare const parseFunnelChoiceDescriptor: (stepType: unknown, choice: unknown) => FunnelChoiceDescriptorParseResult;
export declare const buildChoiceCompletion: (stepMeta: FunnelChoiceStepMeta, options: FunnelChoiceOptions, ids: string | readonly string[]) => FunnelChoiceCompletion | FunnelContractDiagnostic;
export {};