Node.js zlib.createDeflateRaw() Method Last Updated : 12 Oct, 2021 Comments Improve Suggest changes Like Article Like Report The zlib.createDeflateRaw() method is an inbuilt application programming interface of the Zlib module which is used to create a new DeflateRaw object. Syntax: zlib.createDeflateRaw( options ) Parameters: This method accepts single parameter options which is an optional parameter that holds the zlib options. Return Value: It returns a new DeflateRaw object. Below examples illustrate the use of zlib.createDeflateRaw() method in Node.js: Example 1: javascript // Node.js program to demonstrate the // createDeflateRaw() method // Including zlib and fs module const zlib = require("zlib"); const fs = require('fs'); // Creating readable Stream const inp = fs.createReadStream('input.txt'); // Creating writable stream const out = fs.createWriteStream('input.txt.gz'); // Calling createDeflateRaw method const defR = zlib.createDeflateRaw(); // Piping inp.pipe(defR).pipe(out); console.log("Program Completed!"); Output: Program Completed! Example 2: javascript // Node.js program to demonstrate the // createDeflateRaw() method // Including zlib and fs module const zlib = require("zlib"); const fs = require('fs'); // Creating readable Stream const inp = fs.createReadStream('input.txt'); // Creating writable stream const out = fs.createWriteStream('input.txt.gz'); // Calling createDeflateRaw method const defR = zlib.createDeflateRaw(); // Piping inp.pipe(out).pipe(defR); console.log("Program Completed!"); Output: Error [ERR_STREAM_CANNOT_PIPE]: Cannot pipe, not readable at WriteStream.Writable.pipe (_stream_writable.js:243:24) at /home/runner/SomberMonumentalCad/index.js:19:15 at Script.runInContext (vm.js:133:20) at Object. (/run_dir/interp.js:156:20) at Module._compile (internal/modules/cjs/loader.js:778:30) at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10) at Module.load (internal/modules/cjs/loader.js:653:32) at tryModuleLoad (internal/modules/cjs/loader.js:593:12) at Function.Module._load (internal/modules/cjs/loader.js:585:3) Here, piping is not done in a proper order so, error is thrown. Reference: https://nodejs.org/api/zlib.html#zlib_zlib_createdeflateraw_options Comment More infoAdvertise with us Next Article Node.js zlib.createGunzip() Method N nidhi1352singh Follow Improve Article Tags : Web Technologies Node.js Node.js-Zlib-module Similar Reads Node.js zlib.constants Property The zlib.constants property is used to yields an object listing Zlib-related constants. Syntax: zlib.constants Return Value: It returns all the Zlib-related constants. 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