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Node.js | zlib.inflate() Method

  • Last Updated : 05 Mar, 2020

The zlib.inflate() method is an inbuilt application programming interface of the Zlib module which is used to decompress a chunk of data.

Syntax:

zlib.inflate( buffer, options, callback )

Parameters: This method accepts three parameters as mentioned above and described below:

  • buffer: It can be of type Buffer, TypedArray, DataView, ArrayBuffer, and string.
  • options: It is an optional parameter that holds the zlib options.
  • callback: It holds the callback function.

Return Value: It returns the chunk of data after decompression.

Below examples illustrate the use of zlib.inflate() method in Node.js:



Example 1:




// Node.js program to demonstrate the     
// inflate() method
   
// Including zlib module
const zlib = require("zlib");
   
// Declaring input and assigning
// it a value string
var input = "Geeks";
   
// Calling deflate method
zlib.deflate(input, (err, buffer) => {
   
  // Calling inflate method
  zlib.inflate(buffer, (err, buffer) => {
    console.log(buffer.toString('utf8'));
  });
});

Output:

Geeks

Example 2:




// Node.js program to demonstrate the     
// inflate() method
   
// Including zlib module
const zlib = require("zlib");
   
// Declare input and assign
// it a value string
var input = "Nidhi Singh";
   
// Calling deflate method
zlib.deflate(input, (err, buffer) => {
   
  // Calling inflate method
  zlib.inflate(buffer, (err, buffer) => {
    console.log(buffer.toString('hex'));
  });
});

Output:

4e696468692053696e6768

Reference: https://nodejs.org/api/zlib.html#zlib_zlib_inflate_buffer_options_callback




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