import type { ExtractPublicationInput, GradeSettlementInput, QuizAnswerInput, QuizPublicationInput, WikiChangeInput } from "../contracts.js";
export declare function isRecord(value: unknown): value is Record<string, unknown>;
export declare function jsonValue(value: unknown): unknown;
export declare function asAnswers(value: unknown): QuizAnswerInput[];
export declare function exact(value: Record<string, unknown>, allowed: readonly string[], label: string): void;
export declare function requiredString(value: Record<string, unknown>, key: string, label?: string): string;
export declare function optionalString(value: Record<string, unknown>, key: string, label?: string): string | undefined;
export declare function requiredInteger(value: Record<string, unknown>, key: string, label?: string): number;
export declare function decodeExtractPublicationInput(value: unknown): ExtractPublicationInput;
export declare function decodeWikiChangeInput(value: unknown): WikiChangeInput;
export declare function decodeQuizPublication(value: unknown): QuizPublicationInput;
export declare function decodeReading(value: unknown): {
    pageId: string;
    anchor: string;
    heading?: string;
};
export declare function decodeGrade(value: unknown): GradeSettlementInput;
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