apply babel to all js files (#4853)

rename *.es6 files back to *.js

https://github.com/mozilla/sumo-project/issues/879

kitsune/sumo/static/sumo/js/tests/instant_search_tests.js

@@ -45,14 +45,14 @@ describe('instant search', () => {
       // actually tested below, but are required to get the rest of the
       // tests to pass. This should be revisited when we have a frontend
       // build process in place.
-      global.tabsInit = require('../sumo-tabs.es6').tabsInit;
+      global.tabsInit = require('../sumo-tabs.js').tabsInit;
       global.detailsInit = require('../protocol-details-init.js').detailsInit;
 
 
       rerequire('../i18n.js');
       global.interpolate = global.window.interpolate;
-      rerequire('../search_utils.es6');
-      rerequire('../instant_search.es6');
+      rerequire('../search_utils.js');
+      rerequire('../instant_search.js');
 
       let content = (
         <div>

webpack.config.js

@@ -22,7 +22,7 @@ module.exports = (env, argv) => {
     module: {
       rules: [
         {
-          test: /\.es6$/,
+          test: /\.js$/,
           exclude: /node_modules/,
           use: {
             loader: "babel-loader",

webpack/entrypoints.js

@@ -13,7 +13,7 @@ module.exports = {
     "nunjucks/browser/nunjucks-slim.js",
     "sumo/js/nunjucks.js",
     "sumo/js/cached_xhr.js",
-    "sumo/js/search_utils.es6",
+    "sumo/js/search_utils.js",
     "sumo/js/browserdetect.js",
     "sumo/js/libs/uitour.js",
     "sumo/js/kbox.js",
@@ -22,7 +22,7 @@ module.exports = {
     "sumo/js/geoip-locale.js",
     "sumo/js/ui.js",
     "sumo/js/analytics.js",
-    "sumo/js/instant_search.es6",
+    "sumo/js/instant_search.js",
     "sumo/js/responsive-nav-toggle.js",
     "sumo/js/profile-avatars.js",
     "./webpack/protocol-compat.js",
@@ -37,13 +37,13 @@ module.exports = {
     "protocol/js/protocol-newsletter.js",
     "protocol/js/protocol-notification-bar.js",
     "protocol/js/protocol-lang-switcher.js",
-    "sumo/js/protocol-nav.es6",
+    "sumo/js/protocol-nav.js",
     "sumo/js/protocol-details-init.js",
-    "sumo/js/protocol-modal-init.es6",
+    "sumo/js/protocol-modal-init.js",
     "sumo/js/protocol-notification-init.js",
     "sumo/js/protocol-language-switcher-init.js",
-    "sumo/js/sumo-tabs.es6",
-    "sumo/js/sumo-close-this.es6",
+    "sumo/js/sumo-tabs.js",
+    "sumo/js/sumo-close-this.js",
   ],
   "common.fx.download": [
     "sumo/js/show-fx-download.js",

webpack/global-expose-rules.js

@@ -13,7 +13,7 @@ module.exports = [
     "../kitsune/sumo/static/sumo/js/protocol-details-init.js",
     "detailsInit detailsInit"
   ),
-  expose("../kitsune/sumo/static/sumo/js/sumo-tabs.es6", "tabsInit tabsInit"),
+  expose("../kitsune/sumo/static/sumo/js/sumo-tabs.js", "tabsInit tabsInit"),
   // wrap these files to make them behave like an es6 module, exporting the named variable, and expose that globally:
   exportAndExpose(
     "../kitsune/sumo/static/sumo/js/libs/uitour.js",