/**
 * [WHO]: QuestionOption, Question, AskUserQuestionInput, AskUserQuestionOutput, schema definitions
 * [FROM]: 1:1 ported from Claude Code AskUserQuestion Zod schemas → TypeBox
 * [TO]: Consumed by ./ask-user-question-tool.ts
 * [HERE]: extensions/builtin/ask-user-question/types.ts - TypeBox schemas for AskUserQuestion tool
 */
import { type Static } from "@sinclair/typebox";
export declare const QuestionOptionSchema: import("@sinclair/typebox").TObject<{
    label: import("@sinclair/typebox").TString;
    description: import("@sinclair/typebox").TString;
    preview: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TString>;
}>;
export type QuestionOption = Static<typeof QuestionOptionSchema>;
export declare const QuestionSchema: import("@sinclair/typebox").TObject<{
    question: import("@sinclair/typebox").TString;
    header: import("@sinclair/typebox").TString;
    options: import("@sinclair/typebox").TArray<import("@sinclair/typebox").TObject<{
        label: import("@sinclair/typebox").TString;
        description: import("@sinclair/typebox").TString;
        preview: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TString>;
    }>>;
    multiSelect: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TBoolean>;
}>;
export type Question = Static<typeof QuestionSchema>;
export declare const AnnotationsSchema: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TRecord<import("@sinclair/typebox").TString, import("@sinclair/typebox").TObject<{
    preview: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TString>;
    notes: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TString>;
}>>>;
export type Annotations = Static<typeof AnnotationsSchema>;
export declare const AskUserQuestionInputSchema: import("@sinclair/typebox").TObject<{
    questions: import("@sinclair/typebox").TArray<import("@sinclair/typebox").TObject<{
        question: import("@sinclair/typebox").TString;
        header: import("@sinclair/typebox").TString;
        options: import("@sinclair/typebox").TArray<import("@sinclair/typebox").TObject<{
            label: import("@sinclair/typebox").TString;
            description: import("@sinclair/typebox").TString;
            preview: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TString>;
        }>>;
        multiSelect: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TBoolean>;
    }>>;
    answers: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TRecord<import("@sinclair/typebox").TString, import("@sinclair/typebox").TString>>;
    annotations: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TRecord<import("@sinclair/typebox").TString, import("@sinclair/typebox").TObject<{
        preview: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TString>;
        notes: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TString>;
    }>>>;
    metadata: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TObject<{
        source: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TString>;
    }>>;
}>;
export type AskUserQuestionInput = Static<typeof AskUserQuestionInputSchema>;
export declare const AskUserQuestionOutputSchema: import("@sinclair/typebox").TObject<{
    questions: import("@sinclair/typebox").TArray<import("@sinclair/typebox").TObject<{
        question: import("@sinclair/typebox").TString;
        header: import("@sinclair/typebox").TString;
        options: import("@sinclair/typebox").TArray<import("@sinclair/typebox").TObject<{
            label: import("@sinclair/typebox").TString;
            description: import("@sinclair/typebox").TString;
            preview: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TString>;
        }>>;
        multiSelect: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TBoolean>;
    }>>;
    answers: import("@sinclair/typebox").TRecord<import("@sinclair/typebox").TString, import("@sinclair/typebox").TString>;
    annotations: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TRecord<import("@sinclair/typebox").TString, import("@sinclair/typebox").TObject<{
        preview: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TString>;
        notes: import("@sinclair/typebox").TOptional<import("@sinclair/typebox").TString>;
    }>>>;
}>;
export type AskUserQuestionOutput = Static<typeof AskUserQuestionOutputSchema>;
export declare function validateUniqueness(questions: Question[]): string | null;