crawl a page a bunch of times

crawl.js

var fs = require('fs');

var async = require('async');
var request = require('request');
var cheerio = require('cheerio');
var _ = require('lodash');

var url = 'http://programmingexcuses.com';

var excuses = [];

module.exports.crawl = function(callback){
        request(url, function (error, response, body) {
          console.log('crawling');
                if (!error && response.statusCode == 200) {
                        $ = cheerio.load(body) // Show the HTML for the Google homepage.
                        excuses.push($('.wrapper center').text());
                        callback();
                }
        });
}

var count = 0;

async.whilst(
    function () {
                        return count < 400;
                },
    function (callback) {
                                module.exports.crawl(function(){
                                        count++;
                                        setTimeout(callback, 100);
                                })
    },
    function (err) {
                        console.log(_.unique(excuses))
    }
);

package.json

{
  "name": "excuses",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "dependencies": {
    "async": "^1.5.0",
    "cheerio": "^0.19.0",
    "lodash": "^3.10.1",
    "request": "^2.67.0"
  },
  "devDependencies": {},
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC"
}