Fix a bug with Moment locale in production build

build/webpack.prod.conf.js

@@ -16,17 +16,6 @@ const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
 
 const env = require('../config/prod.env')
 
-// List available locales, to fetch only the required locales from Moment.JS:
-// Build a regexp that selects the locale's name without the JS extension (due
-// to the way moment includes those) and ensure that's the last character to
-// not include locale variants. See discussion in
-// https://framagit.org/bnjbvr/kresus/merge_requests/448#note_130514
-const locales = fs.readdirSync('src/i18n').filter(x => x != 'index.js').map(
-    x => x.replace('.js', '')
-);
-const localesRegex = new RegExp(
-    '(' + locales.join('|') + ')$'
-);
 
 const webpackConfig = merge(baseWebpackConfig, {
     module: {
@@ -140,7 +129,7 @@ const webpackConfig = merge(baseWebpackConfig, {
         }),
 
         // Only keep the useful locales from Moment.
-        new webpack.ContextReplacementPlugin(/moment[\/\\]locale$/, localesRegex),
+        new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
 
         // copy custom static assets
         new CopyWebpackPlugin([

src/i18n/index.js

@@ -1,10 +1,16 @@
 import Vue from 'vue';
 import VueI18n from 'vue-i18n';
 
+// Moment locales
+import 'moment/locale/en-gb';
+import 'moment/locale/fr';
+
+// App locales
 import en from './en.json';
 import fr from './fr.json';
 import oc from './oc.json';
 
+// Local moment locales
 import './moment/oc';
 
 export const AVAILABLE_LOCALES = [