diff --git a/packages/optimizely-sdk/lib/core/notification_center/index.js b/packages/optimizely-sdk/lib/core/notification_center/index.js
index 1d26ae52a..1bd334a50 100644
--- a/packages/optimizely-sdk/lib/core/notification_center/index.js
+++ b/packages/optimizely-sdk/lib/core/notification_center/index.js
@@ -66,7 +66,7 @@ NotificationCenter.prototype.addNotificationListener = function (notificationTyp
     }
 
     var callbackAlreadyAdded = false;
-    fns.forEach(this.__notificationListeners[notificationType], function (listenerEntry) {
+    (this.__notificationListeners[notificationType] || []).forEach(function(listenerEntry) {
       if (listenerEntry.callback === callback) {
         callbackAlreadyAdded = true;
         return false;
@@ -102,12 +102,13 @@ NotificationCenter.prototype.removeNotificationListener = function (listenerId)
     var indexToRemove;
     var typeToRemove;
     fns.forOwn(this.__notificationListeners, function (listenersForType, notificationType) {
-      fns.forEach(listenersForType, function (listenerEntry, i) {
+      (listenersForType || []).every(function(listenerEntry, i) {
         if (listenerEntry.id === listenerId) {
           indexToRemove = i;
           typeToRemove = notificationType;
           return false;
         }
+        return true
       });
       if (indexToRemove !== undefined && typeToRemove !== undefined) {
         return false;
@@ -160,7 +161,7 @@ NotificationCenter.prototype.clearNotificationListeners = function (notification
  */
 NotificationCenter.prototype.sendNotifications = function (notificationType, notificationData) {
   try {
-    fns.forEach(this.__notificationListeners[notificationType], function (listenerEntry) {
+    (this.__notificationListeners[notificationType] || []).forEach(function(listenerEntry) {
       var callback = listenerEntry.callback;
       try {
         callback(notificationData);
diff --git a/packages/optimizely-sdk/lib/core/project_config/index.js b/packages/optimizely-sdk/lib/core/project_config/index.js
index 41b0ee6ce..7629e4553 100644
--- a/packages/optimizely-sdk/lib/core/project_config/index.js
+++ b/packages/optimizely-sdk/lib/core/project_config/index.js
@@ -41,7 +41,7 @@ module.exports = {
      * Conditions of audiences in projectConfig.typedAudiences are not
      * expected to be string-encoded as they are here in projectConfig.audiences.
      */
-    fns.forEach(projectConfig.audiences, function(audience) {
+    (projectConfig.audiences || []).forEach(function(audience) {
       audience.conditions = JSON.parse(audience.conditions);
     });
     projectConfig.audiencesById = fns.keyBy(projectConfig.audiences, 'id');
@@ -52,16 +52,16 @@ module.exports = {
     projectConfig.groupIdMap = fns.keyBy(projectConfig.groups, 'id');
 
     var experiments;
-    fns.forEach(projectConfig.groupIdMap, function(group, Id) {
-      experiments = fns.cloneDeep(group.experiments);
-      fns.forEach(experiments, function(experiment) {
+    Object.keys(projectConfig.groupIdMap || {}).forEach(function(Id) {
+      experiments = fns.cloneDeep(projectConfig.groupIdMap[Id].experiments);
+      (experiments || []).forEach(function(experiment) {
         projectConfig.experiments.push(fns.assign(experiment, {groupId: Id}));
       });
     });
 
     projectConfig.rolloutIdMap = fns.keyBy(projectConfig.rollouts || [], 'id');
     fns.forOwn(projectConfig.rolloutIdMap, function(rollout) {
-      fns.forEach(rollout.experiments || [], function(experiment) {
+      (rollout.experiments || []).forEach(function(experiment) {
         projectConfig.experiments.push(fns.cloneDeep(experiment));
         // Creates { <variationKey>: <variation> } map inside of the experiment
         experiment.variationKeyMap = fns.keyBy(experiment.variations, 'key');
@@ -73,7 +73,7 @@ module.exports = {
 
     projectConfig.variationIdMap = {};
     projectConfig.variationVariableUsageMap = {};
-    fns.forEach(projectConfig.experiments, function(experiment) {
+    (projectConfig.experiments || []).forEach(function(experiment) {
       // Creates { <variationKey>: <variation> } map inside of the experiment
       experiment.variationKeyMap = fns.keyBy(experiment.variations, 'key');
 
@@ -94,7 +94,7 @@ module.exports = {
     projectConfig.featureKeyMap = fns.keyBy(projectConfig.featureFlags || [], 'key');
     fns.forOwn(projectConfig.featureKeyMap, function(feature) {
       feature.variableKeyMap = fns.keyBy(feature.variables, 'key');
-      fns.forEach(feature.experimentIds || [], function(experimentId) {
+      (feature.experimentIds || []).forEach(function(experimentId) {
         // Add this experiment in experiment-feature map.
         if (projectConfig.experimentFeatureMap[experimentId]) {
           projectConfig.experimentFeatureMap[experimentId].push(feature.id);
diff --git a/packages/optimizely-sdk/lib/utils/fns/index.js b/packages/optimizely-sdk/lib/utils/fns/index.js
index 5840fa684..4895106a3 100644
--- a/packages/optimizely-sdk/lib/utils/fns/index.js
+++ b/packages/optimizely-sdk/lib/utils/fns/index.js
@@ -54,7 +54,6 @@ module.exports = {
       return item[key];
     });
   },
-  forEach: require('lodash/forEach'),
   forOwn: require('lodash/forOwn'),
   uuid: function() {
     return uuid.v4();