Use ES6 class syntax

lib/cartodb/api/template/named-template-controller.js

@@ -33,88 +33,82 @@ const { RATE_LIMIT_ENDPOINTS_GROUPS } = rateLimit;
  * @param {StatsBackend} statsBackend
  * @constructor
  */
-function NamedMapController (
-    pgConnection,
-    templateMaps,
-    mapBackend,
-    metadataBackend,
-    surrogateKeysCache,
-    userLimitsBackend,
-    layergroupAffectedTables,
-    mapConfigAdapter,
-    statsBackend,
-    authBackend,
-    layergroupMetadata
-) {
-    this.pgConnection = pgConnection;
-    this.templateMaps = templateMaps;
-    this.mapBackend = mapBackend;
-    this.metadataBackend = metadataBackend;
-    this.surrogateKeysCache = surrogateKeysCache;
-    this.userLimitsBackend = userLimitsBackend;
-    this.layergroupAffectedTables = layergroupAffectedTables;
-    this.mapConfigAdapter = mapConfigAdapter;
-    this.statsBackend = statsBackend;
-    this.authBackend = authBackend;
-    this.layergroupMetadata = layergroupMetadata;
-}
+module.exports = class NamedMapController {
+    constructor (
+        pgConnection,
+        templateMaps,
+        mapBackend,
+        metadataBackend,
+        surrogateKeysCache,
+        userLimitsBackend,
+        layergroupAffectedTables,
+        mapConfigAdapter,
+        statsBackend,
+        authBackend,
+        layergroupMetadata
+    ) {
+        this.pgConnection = pgConnection;
+        this.templateMaps = templateMaps;
+        this.mapBackend = mapBackend;
+        this.metadataBackend = metadataBackend;
+        this.surrogateKeysCache = surrogateKeysCache;
+        this.userLimitsBackend = userLimitsBackend;
+        this.layergroupAffectedTables = layergroupAffectedTables;
+        this.mapConfigAdapter = mapConfigAdapter;
+        this.statsBackend = statsBackend;
+        this.authBackend = authBackend;
+        this.layergroupMetadata = layergroupMetadata;
+    }
 
-module.exports = NamedMapController;
+    register (templateRouter) {
+        templateRouter.get(`/:template_id/jsonp`, this.composeInstantiateTemplateMiddleware());
 
-NamedMapController.prototype.register = function (templateRouter) {
-    templateRouter.get(
-        `/:template_id/jsonp`,
-        this.composeInstantiateTemplateMiddleware()
-    );
+        templateRouter.post(`/:template_id`, this.composeInstantiateTemplateMiddleware());
+    }
 
-    templateRouter.post(
-        `/:template_id`,
-        this.composeInstantiateTemplateMiddleware()
-    );
-};
+    composeInstantiateTemplateMiddleware () {
+        const isTemplateInstantiation = true;
+        const useTemplateHash = true;
+        const includeQuery = false;
+        const label = 'NAMED MAP LAYERGROUP';
+        const addContext = false;
 
-NamedMapController.prototype.composeInstantiateTemplateMiddleware = function () {
-    const isTemplateInstantiation = true;
-    const useTemplateHash = true;
-    const includeQuery = false;
-    const label = 'NAMED MAP LAYERGROUP';
-    const addContext = false;
-
-    return [
-        credentials(),
-        authorize(this.authBackend),
-        dbConnSetup(this.pgConnection),
-        rateLimit(this.userLimitsBackend, RATE_LIMIT_ENDPOINTS_GROUPS.NAMED),
-        cleanUpQueryParams(['aggregation']),
-        initProfiler(isTemplateInstantiation),
-        checkJsonContentType(),
-        checkInstantiteLayergroup(),
-        getTemplate(
-            this.templateMaps,
-            this.pgConnection,
-            this.metadataBackend,
-            this.userLimitsBackend,
-            this.mapConfigAdapter,
-            this.layergroupAffectedTables
-        ),
-        instantiateLayergroup(
-            this.mapBackend,
-            this.userLimitsBackend,
-            this.pgConnection,
-            this.layergroupAffectedTables
-        ),
-        incrementMapViewCount(this.metadataBackend),
-        augmentLayergroupData(),
-        cacheControlHeader({ ttl: global.environment.varnish.layergroupTtl || 86400, revalidate: true }),
-        cacheChannelHeader(),
-        surrogateKeyHeader({ surrogateKeysCache: this.surrogateKeysCache }),
-        lastModifiedHeader({ now: true }),
-        lastUpdatedTimeLayergroup(),
-        layerStats(this.pgConnection, this.statsBackend),
-        layergroupIdHeader(this.templateMaps ,useTemplateHash),
-        layergroupMetadata(this.layergroupMetadata, includeQuery),
-        mapError({ label, addContext })
-    ];
+        return [
+            credentials(),
+            authorize(this.authBackend),
+            dbConnSetup(this.pgConnection),
+            rateLimit(this.userLimitsBackend, RATE_LIMIT_ENDPOINTS_GROUPS.NAMED),
+            cleanUpQueryParams(['aggregation']),
+            initProfiler(isTemplateInstantiation),
+            checkJsonContentType(),
+            checkInstantiteLayergroup(),
+            getTemplate(
+                this.templateMaps,
+                this.pgConnection,
+                this.metadataBackend,
+                this.userLimitsBackend,
+                this.mapConfigAdapter,
+                this.layergroupAffectedTables
+            ),
+            instantiateLayergroup(
+                this.mapBackend,
+                this.userLimitsBackend,
+                this.pgConnection,
+                this.layergroupAffectedTables
+            ),
+            incrementMapViewCount(this.metadataBackend),
+            augmentLayergroupData(),
+            cacheControlHeader({ ttl: global.environment.varnish.layergroupTtl || 86400, revalidate: true }),
+            cacheChannelHeader(),
+            surrogateKeyHeader({ surrogateKeysCache: this.surrogateKeysCache }),
+            lastModifiedHeader({ now: true }),
+            lastUpdatedTimeLayergroup(),
+            layerStats(this.pgConnection, this.statsBackend),
+            layergroupIdHeader(this.templateMaps ,useTemplateHash),
+            layergroupMetadata(this.layergroupMetadata, includeQuery),
+            mapError({ label, addContext })
+        ];
+    }
 };
 
 function checkInstantiteLayergroup () {