Force the use of single quotes

src/components/lazyloader/lazyloader-intersectionobserver.js

@@ -17,7 +17,7 @@ define(['require', 'browser'], function (require, browser) {
         var loadedCount = 0;
         var callback = options.callback;
 
-        observerOptions.rootMargin = "50%";
+        observerOptions.rootMargin = '50%';
 
         var observerId = 'obs' + new Date().getTime();
 

src/components/lazyloader/lazyloader-scroll.js

@@ -18,10 +18,10 @@ define(['visibleinviewport', 'dom', 'browser'], function (visibleinviewport, dom
     }
 
     if (browser.iOS) {
-        dom.addEventListener(window, "orientationchange", resetThresholdsOnTimer, { passive: true });
+        dom.addEventListener(window, 'orientationchange', resetThresholdsOnTimer, { passive: true });
         dom.addEventListener(window, 'resize', resetThresholdsOnTimer, { passive: true });
     } else {
-        dom.addEventListener(window, "orientationchange", resetThresholds, { passive: true });
+        dom.addEventListener(window, 'orientationchange', resetThresholds, { passive: true });
         dom.addEventListener(window, 'resize', resetThresholds, { passive: true });
     }
     resetThresholds();