Double check that ga variable exists

#68

Author: Andy Woodruff

src/js/stateUpdate/stateUpdateCensusField.js

@@ -10,7 +10,7 @@ const getStateUpdateCensusField = ({ components }) => function updateCensusField
     yearDropdown,
   } = components;
 
-  if (censusField) {
+  if (censusField && typeof ga !== 'undefined') {
     ga('send', 'event', 'data', 'indicator', censusField.id);
   }
 

src/js/stateUpdate/stateUpdateIndicator.js

@@ -11,7 +11,7 @@ const getStateUpdateIndicator = ({ components }) => function updateIndicator() {
   const indicator = this.get('indicator');
   const nationalMapData = this.getCurrentNationalMapData();
   const nationalData = this.getCurrentNationalData();
-  if (indicator) {
+  if (indicator && typeof ga !== 'undefined') {
     ga('send', 'event', 'data', 'indicator', indicator.value);
   }
 

src/js/stateUpdate/stateUpdateMSA.js

@@ -14,7 +14,7 @@ const getStateUpdateMSA = ({ components }) => function updateMSA() {
   this.set('distanceFilter', null);
   const distanceFilter = this.get('distanceFilter');
 
-  if (msa) {
+  if (msa && typeof ga !== 'undefined') {
     ga('send', 'event', 'data', 'msa', msa.msaId);
   }
 

src/js/stateUpdate/stateUpdateYears.js

@@ -18,10 +18,10 @@ const getStateUpdateYear = ({ components }) => function updateYears() {
   const nationalData = this.getCurrentNationalData();
   const agenciesData = this.getCurrentAgenciesData();
 
-  if (scale === 'msa' && !censusField.change) {
+  if (scale === 'msa' && !censusField.change && typeof ga !== 'undefined') {
     // send single year for single year census data
     ga('send', 'event', 'data', 'years', years[1]);
-  } else {
+  } else if (typeof ga !== 'undefined') {
     ga('send', 'event', 'data', 'years', years.join('-'));
   }