/**
 * Types for compression handlers
 */
import type Stream from 'stream';
/**
 * Result of processing a chunk of compressed data
 */
export interface CompressionResult {
    /** True if processing should continue, false if waiting for async completion */
    continue: boolean;
    /** Error if processing failed */
    error?: Error;
}
/**
 * Callbacks for compression handler to communicate with parent
 */
export interface CompressionCallbacks {
    /** Called when decompressed data is ready */
    onData: (chunk: Buffer) => void;
    /** Called when an error occurs */
    onError: (err: Error) => void;
    /** Called when decompression is complete (for async handlers) */
    onComplete: () => void;
    /** Verify CRC option */
    verifyCrc: boolean;
}
/**
 * Common interface for compression handlers
 */
export interface CompressionHandler {
    /** Write compressed data to the handler */
    write(chunk: Buffer): void;
    /**
     * Finish processing and verify CRC
     * @param expectedCrc Expected CRC32 from header
     * @returns Result indicating success/failure and whether to continue
     */
    finish(expectedCrc: number): CompressionResult;
    /** Get the running CRC value */
    getRunningCrc(): number;
    /** Check if handler is waiting for async completion */
    isWaiting(): boolean;
    /** Clean up any resources */
    destroy(): void;
}
/**
 * Options for creating a compression handler
 */
export interface CompressionOptions {
    /** Output stream to write decompressed data to */
    outputStream: Stream.PassThrough;
    /** Callback when processing is complete */
    onComplete: () => void;
    /** Callback when an error occurs */
    onError: (err: Error) => void;
    /** Whether to verify CRC (default: true) */
    verifyCrc?: boolean;
}