built assets are webpack cacheable

build/generate_asset_map.js

@@ -14,6 +14,6 @@ module.exports = function() {
   return {
     code,
     dependencies: files.map(f => require.resolve('../assets/' + f)),
-    cacheable: false
+    cacheable: true
   };
 };

build/generate_l10n_map.js

@@ -17,6 +17,6 @@ module.exports = function() {
     dependencies: dirs.map(d =>
       require.resolve(`../public/locales/${d}/send.ftl`)
     ),
-    cacheable: false
+    cacheable: true
   };
 };

test/frontend/index.js

@@ -11,6 +11,6 @@ module.exports = function() {
   return {
     code,
     dependencies: files.map(f => require.resolve('./tests/' + f)),
-    cacheable: false
+    cacheable: true
   };
 };