Simple download with node.js

simple_request.js

var request = require('request');
var fs      = require('fs');

var downloadUrl = process.argv[2];
if (typeof donwloadUrl === undefined) {
    console.log("Usage: request.js URL");
    process.exit(1);
}

request.get({ uri: downloadUrl }, function (error, response, body) {
    if (!error && response.statusCode === 200) {
        fs.createWriteStream("output.html", {
            flags: "w",
        }).write(body);
    }
});