import type { ActionBatchPackEncoding, ActionBatchPackItem } from '../sdk/ActionBatch.interfaces';
export declare const ACTION_BATCH_PACK_ENCODING_HEADER = "X-BSV-Action-Batch-Encoding";
export declare function actionBatchPackLength(items: ActionBatchPackItem[]): number;
/** Encode independently content-addressed blobs into one transport frame. */
export declare function encodeActionBatchPack(items: ActionBatchPackItem[], maxBytes: number, maxItems: number): Uint8Array;
/** Decode a transport frame without copying its individual blob payloads. */
export declare function decodeActionBatchPack(bytes: Uint8Array, maxBytes: number, maxItems: number): ActionBatchPackItem[];
export declare function supportedActionBatchPackEncodings(): ActionBatchPackEncoding[];
export declare function compressActionBatchPack(bytes: Uint8Array, encoding: ActionBatchPackEncoding): Promise<Uint8Array>;
/**
 * Compress a pack directly from its item views. Successful compression avoids
 * allocating and copying an additional uncompressed aggregate frame.
 */
export declare function compressActionBatchPackItems(items: ActionBatchPackItem[], encoding: ActionBatchPackEncoding, maxBytes: number, maxItems: number): Promise<Uint8Array>;
export declare function decompressActionBatchPack(bytes: Uint8Array, encoding: ActionBatchPackEncoding, maxBytes: number): Promise<Uint8Array>;
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