diff --git a/src/drivers/npm/driver.js b/src/drivers/npm/driver.js
index 7b66838a1..d0a593bc0 100644
--- a/src/drivers/npm/driver.js
+++ b/src/drivers/npm/driver.js
@@ -133,11 +133,17 @@ class Driver {
         js
       })
         .then(() => {
-          const links = Array.from(browser.document.getElementsByTagName('a'))
-            .filter(link => link.protocol === 'http:' || link.protocol === 'https:')
-            .filter(link => link.hostname === this.origPageUrl.hostname)
-            .filter(link => extensions.test(link.pathname))
-            .map(link => { link.hash = ''; return url.parse(link.href) });
+          const links = Array.prototype.reduce.call(
+            browser.document.getElementsByTagName('a'),
+            (acc, link) => {
+              if (link.protocol.match(/https?:/) || link.hostname === this.origPageUrl.hostname || extensions.test(link.pathname)) {
+                link.hash = '';
+                acc.push(url.parse(link.href));
+              }
+              return acc;
+            },
+            []
+          );
 
           return resolve(links);
         });