From 1c5c9417d2f8be63b32ded6ac91d8ba4d713ee9a Mon Sep 17 00:00:00 2001
From: Noah Levitt <nlevitt@archive.org>
Date: Thu, 25 Aug 2016 13:10:30 -0700
Subject: [PATCH] avoid "Uncaught TypeError: Cannot read property
 'querySelectorAll' of undefined" from outlinks script

---
 brozzler/browser.py | 12 +++++++-----
 setup.py            |  2 +-
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/brozzler/browser.py b/brozzler/browser.py
index 55212c7..92e3479 100644
--- a/brozzler/browser.py
+++ b/brozzler/browser.py
@@ -304,11 +304,13 @@ class Browser:
 var __brzl_framesDone = new Set();
 var __brzl_compileOutlinks = function(frame) {
     __brzl_framesDone.add(frame);
-    var outlinks = Array.prototype.slice.call(
-            frame.document.querySelectorAll('a[href]'));
-    for (var i = 0; i < frame.frames.length; i++) {
-        if (frame.frames[i] && !__brzl_framesDone.has(frame.frames[i])) {
-            outlinks = outlinks.concat(__brzl_compileOutlinks(frame.frames[i]));
+    if (frame && frame.document) {
+        var outlinks = Array.prototype.slice.call(
+                frame.document.querySelectorAll('a[href]'));
+        for (var i = 0; i < frame.frames.length; i++) {
+            if (frame.frames[i] && !__brzl_framesDone.has(frame.frames[i])) {
+                outlinks = outlinks.concat(__brzl_compileOutlinks(frame.frames[i]));
+            }
         }
     }
     return outlinks;
diff --git a/setup.py b/setup.py
index c8da234..036d336 100644
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,7 @@ def find_package_data(package):
 
 setuptools.setup(
         name='brozzler',
-        version='1.1b6.dev77',
+        version='1.1b6.dev78',
         description='Distributed web crawling with browsers',
         url='https://github.com/internetarchive/brozzler',
         author='Noah Levitt',