import type { PublishedAppMetadata } from './types/index.js';
export type AppMetadataValidationCode = 'ERR_METADATA_INVALID' | 'ERR_METADATA_UNSUPPORTED_SCHEMA';
export declare class AppMetadataValidationError extends Error {
    readonly code: AppMetadataValidationCode;
    constructor(code: AppMetadataValidationCode, message: string);
}
/**
 * Validate the canonical Metanet Apps v0.1 metadata shape.
 *
 * This intentionally mirrors the Apps topic manager. It does not rewrite
 * domains, URLs, dates, or assets: metadata admitted by the canonical overlay
 * remains valid and byte-for-byte application data stays under publisher
 * control.
 */
export declare function normalizeAppMetadata(metadata: PublishedAppMetadata): PublishedAppMetadata;
export declare function validateAppMetadata(metadata: PublishedAppMetadata): void;
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