decompress-response 
Decompress a HTTP response if needed
Decompresses the response from http.request if it's gzipped or deflated, otherwise just passes it through.
Used by got.
Install
$ npm install decompress-response
Usage
const http = require('http');
const decompressResponse = require('decompress-response');
http.get('http://sindresorhus.com', response => {
response = decompressResponse(response);
});
License
MIT © Sindre Sorhus