Define cluster types in a constant within frontend

app/assets/javascripts/clusters/components/applications.vue

@@ -13,7 +13,7 @@ import prometheusLogo from 'images/cluster_app_logos/prometheus.png';
 import { s__, sprintf } from '../../locale';
 import applicationRow from './application_row.vue';
 import clipboardButton from '../../vue_shared/components/clipboard_button.vue';
-import { APPLICATION_STATUS, INGRESS } from '../constants';
+import { CLUSTER_TYPE, APPLICATION_STATUS, INGRESS } from '../constants';
 
 export default {
   components: {
@@ -24,7 +24,7 @@ export default {
     type: {
       type: String,
       required: false,
-      default: 'project_type',
+      default: CLUSTER_TYPE.PROJECT,
     },
     applications: {
       type: Object,
@@ -65,7 +65,7 @@ export default {
   }),
   computed: {
     isProjectCluster() {
-      return this.type === 'project_type';
+      return this.type === CLUSTER_TYPE.PROJECT;
     },
     helmInstalled() {
       return (

app/assets/javascripts/clusters/constants.js

+// These need to match the enum found in app/models/clusters/cluster.rb
+export const CLUSTER_TYPE = {
+  INSTANCE: 'instance_type',
+  GROUP: 'group_type',
+  PROJECT: 'project_type',
+};
+
 // These need to match what is returned from the server
 export const APPLICATION_STATUS = {
   NOT_INSTALLABLE: 'not_installable',