Merge pull request #183 from browserstack/AXE-2704/fix_perfrmance_timer_error_handling

Added Error Handler

Author: sajalg-bstack

lib/core/utils/performance-timer.js

@@ -73,17 +73,27 @@ const performanceTimer = (() => {
      * @param {String} endMark String name of mark to end measuring
      */
     measure(measureName, startMark, endMark, details = {}) {
-      if (window.performance && window.performance.measure !== undefined) {
-        if (Object.keys(details).length > 0) {
-          const measureOpts = {
-            detail: details,
-            start: startMark,
-            end: endMark
-          };
-          window.performance.measure(measureName, measureOpts);
-        } else {
-          window.performance.measure(measureName, startMark, endMark);
+      try {
+        if (window.performance && window.performance.measure !== undefined) {
+          if (Object.keys(details).length > 0) {
+            const measureOpts = {
+              detail: details,
+              start: startMark,
+              end: endMark
+            };
+            window.performance.measure(measureName, measureOpts);
+          } else {
+            window.performance.measure(measureName, startMark, endMark);
+          }
         }
+      } catch (err) {
+        // NOTE: Performance metrics will be missed if an error occurs here
+        a11yEngine.errorHandler.addNonCheckError(
+          'INSTRUMENTATION_ERROR',
+          'AxeCore PerformanceTimer measure Error',
+          err,
+          true
+        );
       }
     },
     /**