[Webpack/Moment] Include used locales only

Author: yceruto

src/AppBundle/Form/Type/DateTimePickerType.php

@@ -41,7 +41,7 @@ public function __construct(MomentFormatConverter $converter)
     public function buildView(FormView $view, FormInterface $form, array $options)
     {
         $view->vars['attr']['data-date-format'] = $this->formatConverter->convert($options['format']);
-        $view->vars['attr']['data-date-locale'] = \Locale::getDefault();
+        $view->vars['attr']['data-date-locale'] = mb_strtolower(strtr(\Locale::getDefault(), '_', '-'));
     }
 
     /**

webpack.config.js

@@ -23,6 +23,9 @@ Encore
 
 var config = Encore.getWebpackConfig();
 
-config.plugins.push(new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/));
+config.plugins.push(new webpack.ContextReplacementPlugin(
+    /moment[\/\\]locale$/,
+    /en|fr|de|es|cs|nl|ru|uk|ro|pt-br|pl|it|ja|id|ca|sl|hr|zh-cn/
+));
 
 module.exports = config;