/**
 * Node.js stream-based compression with built-in backpressure
 * Uses readable-stream for universal compatibility
 */
import { Transform } from 'readable-stream';
export type CompressionMethod = 'store' | 'deflate';
export interface StreamMetadata {
    crc32: number;
    compressedSize: number;
    uncompressedSize: number;
}
export interface CompressionStreamResult {
    stream: NodeJS.ReadableStream;
    metadataPromise: Promise<StreamMetadata>;
}
/**
 * Create compression stream with automatic backpressure
 */
export declare function createCompressionStream(inputStream: ReadableStream<Uint8Array> | NodeJS.ReadableStream, method?: CompressionMethod): CompressionStreamResult;
/**
 * Create a simple passthrough stream for monitoring
 */
export declare function createMonitoringStream(name: string): Transform;
/**
 * Get compression method constant for ZIP format
 */
export declare function getCompressionMethodConstant(method: CompressionMethod): number;
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