Not to use Promise#finally() to avoid error

Author: nwtgck

lib/timekeeper.js

@@ -195,10 +195,15 @@
     }
     // If callback is async function
     if (typeof Promise !== 'undefined' && result instanceof Promise) {
-      result.finally(function() {
-        // Reset
-        timekeeper.reset();
-      });
+      result
+        .then(function() {
+          // Reset
+          timekeeper.reset();
+        })
+        .catch(function() {
+          // Reset
+          timekeeper.reset();
+        });
       return result;
     } else {
       // Reset