declare module "zlib" {
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import * as stream from "stream";
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interface ZlibOptions {
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flush?: number; // default: zlib.constants.Z_NO_FLUSH
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finishFlush?: number; // default: zlib.constants.Z_FINISH
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chunkSize?: number; // default: 16*1024
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windowBits?: number;
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level?: number; // compression only
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memLevel?: number; // compression only
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strategy?: number; // compression only
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dictionary?: Buffer | NodeJS.TypedArray | DataView | ArrayBuffer; // deflate/inflate only, empty dictionary by default
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}
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interface Zlib {
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/** @deprecated Use bytesWritten instead. */
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readonly bytesRead: number;
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readonly bytesWritten: number;
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shell?: boolean | string;
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close(callback?: () => void): void;
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flush(kind?: number | (() => void), callback?: () => void): void;
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}
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interface ZlibParams {
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params(level: number, strategy: number, callback: () => void): void;
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}
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interface ZlibReset {
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reset(): void;
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}
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interface Gzip extends stream.Transform, Zlib { }
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interface Gunzip extends stream.Transform, Zlib { }
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interface Deflate extends stream.Transform, Zlib, ZlibReset, ZlibParams { }
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interface Inflate extends stream.Transform, Zlib, ZlibReset { }
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interface DeflateRaw extends stream.Transform, Zlib, ZlibReset, ZlibParams { }
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interface InflateRaw extends stream.Transform, Zlib, ZlibReset { }
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interface Unzip extends stream.Transform, Zlib { }
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function createGzip(options?: ZlibOptions): Gzip;
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function createGunzip(options?: ZlibOptions): Gunzip;
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function createDeflate(options?: ZlibOptions): Deflate;
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function createInflate(options?: ZlibOptions): Inflate;
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function createDeflateRaw(options?: ZlibOptions): DeflateRaw;
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function createInflateRaw(options?: ZlibOptions): InflateRaw;
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function createUnzip(options?: ZlibOptions): Unzip;
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type InputType = string | Buffer | DataView | ArrayBuffer | NodeJS.TypedArray;
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function deflate(buf: InputType, callback: (error: Error | null, result: Buffer) => void): void;
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function deflate(buf: InputType, options: ZlibOptions, callback: (error: Error | null, result: Buffer) => void): void;
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function deflateSync(buf: InputType, options?: ZlibOptions): Buffer;
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function deflateRaw(buf: InputType, callback: (error: Error | null, result: Buffer) => void): void;
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function deflateRaw(buf: InputType, options: ZlibOptions, callback: (error: Error | null, result: Buffer) => void): void;
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function deflateRawSync(buf: InputType, options?: ZlibOptions): Buffer;
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function gzip(buf: InputType, callback: (error: Error | null, result: Buffer) => void): void;
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function gzip(buf: InputType, options: ZlibOptions, callback: (error: Error | null, result: Buffer) => void): void;
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function gzipSync(buf: InputType, options?: ZlibOptions): Buffer;
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function gunzip(buf: InputType, callback: (error: Error | null, result: Buffer) => void): void;
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function gunzip(buf: InputType, options: ZlibOptions, callback: (error: Error | null, result: Buffer) => void): void;
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function gunzipSync(buf: InputType, options?: ZlibOptions): Buffer;
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function inflate(buf: InputType, callback: (error: Error | null, result: Buffer) => void): void;
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function inflate(buf: InputType, options: ZlibOptions, callback: (error: Error | null, result: Buffer) => void): void;
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function inflateSync(buf: InputType, options?: ZlibOptions): Buffer;
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function inflateRaw(buf: InputType, callback: (error: Error | null, result: Buffer) => void): void;
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function inflateRaw(buf: InputType, options: ZlibOptions, callback: (error: Error | null, result: Buffer) => void): void;
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function inflateRawSync(buf: InputType, options?: ZlibOptions): Buffer;
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function unzip(buf: InputType, callback: (error: Error | null, result: Buffer) => void): void;
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function unzip(buf: InputType, options: ZlibOptions, callback: (error: Error | null, result: Buffer) => void): void;
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function unzipSync(buf: InputType, options?: ZlibOptions): Buffer;
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namespace constants {
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// Allowed flush values.
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const Z_NO_FLUSH: number;
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const Z_PARTIAL_FLUSH: number;
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const Z_SYNC_FLUSH: number;
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const Z_FULL_FLUSH: number;
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const Z_FINISH: number;
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const Z_BLOCK: number;
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const Z_TREES: number;
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// Return codes for the compression/decompression functions. Negative values are errors, positive values are used for special but normal events.
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const Z_OK: number;
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const Z_STREAM_END: number;
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const Z_NEED_DICT: number;
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const Z_ERRNO: number;
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const Z_STREAM_ERROR: number;
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const Z_DATA_ERROR: number;
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const Z_MEM_ERROR: number;
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const Z_BUF_ERROR: number;
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const Z_VERSION_ERROR: number;
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// Compression levels.
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const Z_NO_COMPRESSION: number;
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const Z_BEST_SPEED: number;
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const Z_BEST_COMPRESSION: number;
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const Z_DEFAULT_COMPRESSION: number;
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// Compression strategy.
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const Z_FILTERED: number;
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const Z_HUFFMAN_ONLY: number;
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const Z_RLE: number;
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const Z_FIXED: number;
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const Z_DEFAULT_STRATEGY: number;
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}
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// Constants
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const Z_NO_FLUSH: number;
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const Z_PARTIAL_FLUSH: number;
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const Z_SYNC_FLUSH: number;
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const Z_FULL_FLUSH: number;
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const Z_FINISH: number;
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const Z_BLOCK: number;
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const Z_TREES: number;
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const Z_OK: number;
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const Z_STREAM_END: number;
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const Z_NEED_DICT: number;
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const Z_ERRNO: number;
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const Z_STREAM_ERROR: number;
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const Z_DATA_ERROR: number;
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const Z_MEM_ERROR: number;
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const Z_BUF_ERROR: number;
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const Z_VERSION_ERROR: number;
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const Z_NO_COMPRESSION: number;
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const Z_BEST_SPEED: number;
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const Z_BEST_COMPRESSION: number;
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const Z_DEFAULT_COMPRESSION: number;
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const Z_FILTERED: number;
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const Z_HUFFMAN_ONLY: number;
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const Z_RLE: number;
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const Z_FIXED: number;
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const Z_DEFAULT_STRATEGY: number;
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const Z_BINARY: number;
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const Z_TEXT: number;
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const Z_ASCII: number;
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const Z_UNKNOWN: number;
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const Z_DEFLATED: number;
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}
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