Cleanup mdn scripts

utils/apidoc/mdn/crawl.js

+// TODO(jacobr): convert this file to Dart once Dart supports all of the
+// nodejs functionality used here.  For example, search for all occurences of
+// "http." and "fs."
 var http = require('http');
 var fs = require('fs');
 
 try {
   fs.mkdirSync('output/crawl');
 } catch (e) {
   // It doesn't matter if the directories already exist.    
 }
 
 var domTypes = JSON.parse(fs.readFileSync('data/domTypes.json', 'utf8'));
 
 var cacheData = {};
 
 function scrape(filename, link) { 
   console.log(link);
   var httpsPrefix = "https://";
   var prefix = 'https://developer.mozilla.org/';
   var notFoundPrefix = 'https://developer.mozilla.org/Article_not_found?uri=';
   if (link.indexOf(prefix) != 0 ) {
-    throw "Unexpected url:" + link;
+    throw "Unexpected url: " + link;
   }
   var scrapePath = "/search?q=cache:" + link;
   // We crawl content from googleusercontent.com so we don't have to worry about
   // crawler politeness like we would have to if scraping developer.mozilla.org
   // directly.
   var options = {
     host: 'webcache.googleusercontent.com',
     path: scrapePath,
     port: 80,
     method: 'GET'
@@ skipping 77 matching lines @@
     if (link.indexOf(notFoundPrefix) == 0) {
       link = prefix + link.substr(notFoundPrefix.length);
     }
 
     entry.push({index: j, link: link, title: item['title']});
     scrape(type + j, link);
   }
 }
 
 fs.writeFileSync('output/crawl/cache.json', JSON.stringify(cacheData, null, ' '), 'utf8');