/** In-process bytes stay binary; JSON transport uses base64. */
export type PackBlob = Uint8Array<ArrayBuffer> | string | readonly number[];
export declare function encodePackBlob(bytes: Uint8Array): string;
/** Validate without allocating a decoded buffer or enumerating properties per byte. */
export declare function validatePackBlob(value: unknown): asserts value is PackBlob;
export declare function decodePackBlob(value: PackBlob): Uint8Array<ArrayBuffer>;
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