node js unzip request example

gistfile1.js

var express = require('express')
var app = express()
app.use(function(req, res, next) {
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
    next();
});

app.get('/', function(req, res) {
    var zlib = require('zlib');
    var http = require('http');
    var fs = require('fs');
    var request = http.get({
        host: 'api.walmartlabs.com',
        path: '/v1/feeds/bestsellers?apikey=a6kwenh4cpva3tzt7wdvwb7r',
        port: 80,
        headers: {
            'accept-encoding': 'gzip,deflate'
        }
    });
    request.on('response', function(response) {
        switch (response.headers['content-encoding']) {
            // or, just use zlib.createUnzip() to handle both cases
            case 'gzip':

                console.log("gzip");
                response.pipe(zlib.createGunzip()).pipe(res);
                break;
            case 'deflate':
                response.pipe(zlib.createInflate()).pipe(res);
                break;
            default:
                response.pipe(res);
                break;
        }
    });
})

var server = app.listen(3000, function() {

    var host = server.address().address
    var port = server.address().port

    console.log('Example app listening at http://%s:%s', host, port)

})

Nicely done!