fix(domstats): enable DOM domain (#2640)

GoogleChrome · Jul 5, 2017 · 3ee5215 · 3ee5215
1 parent e5f3a7b
commit 3ee5215
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/lighthouse-core/gather/gatherers/dobetterweb/domstats.js b/lighthouse-core/gather/gatherers/dobetterweb/domstats.js
@@ -137,10 +137,11 @@ class DOMStats extends Gatherer {
       ${elementPathInDOM.toString()};
       return (${getDOMStats.toString()}(document.documentElement));
     })()`;
-    return options.driver.evaluateAsync(expression)
+    return options.driver.sendCommand('DOM.enable')
+      .then(() => options.driver.evaluateAsync(expression))
       .then(results => options.driver.getElementsInDocument().then(allNodes => {
         results.totalDOMNodes = allNodes.length;
-        return results;
+        return options.driver.sendCommand('DOM.disable').then(() => results);
       }));
   }
 }