Don't fetch or execute JavaScript

lib/download.js

@@ -3,7 +3,7 @@ const path = require("path");
 const fs = require("mz/fs");
 const mkdirp = require("mkdirp-then");
 const request = require("requisition");
-const jsdom = require("jsdom");
+const jsdom = require("./jsdom.js");
 
 const FILENAME_PREFIX = "chapter";
 const URL_SUFFIX = "-url.txt";
@@ -59,7 +59,7 @@ function downloadAllChapters(startChapterUrl, startChapterNumber, cachePath) {
     })
     .then(function (contents) {
       console.log("- Response body received");
-      const rawChapterDoc = jsdom.jsdom(contents, { url: currentChapter });
+      const rawChapterDoc = jsdom(contents, { url: currentChapter });
       console.log("- Response body parsed into DOM");
 
       const chapterUrlToSave = currentChapter;

lib/jsdom.js

@@ -0,0 +1,13 @@
+"use strict";
+const jsdom = require("jsdom");
+const xtend = require("xtend");
+
+// No need to fetch or execute JavaScript
+module.exports = function (contents, options) {
+  options = xtend(options, { features: {
+    FetchExternalResources: false,
+    ProcessExternalResources: false
+  }});
+
+  return jsdom.jsdom(contents, options);
+};

lib/worm-scraper.js

@@ -3,7 +3,7 @@ const path = require("path");
 const fs = require("mz/fs");
 const mkdirp = require("mkdirp-then");
 const rimraf = require("rimraf-then");
-const jsdom = require("jsdom");
+const jsdom = require("./jsdom.js");
 
 const download = require("./download.js");
 
@@ -42,7 +42,7 @@ function convertChapter(filePath, i) {
   console.log(`- Reading ${filePath}`);
   return fs.readFile(filePath, { encoding: "utf-8" }).then(function (contents) {
     console.log(`- Read ${filePath}`);
-    const rawChapterDoc = jsdom.jsdom(contents);
+    const rawChapterDoc = jsdom(contents);
     const output = getChapterString(rawChapterDoc);
 
     // TODO: this should probably not be necessary... jsdom bug I guess!?