add hash digest to assets names.

https://survivejs.com/webpack/optimizing/adding-hashes-to-filenames/

1 files changed, 1 insertions, 1 deletions

diff --git a/webpack.parts.js b/webpack.parts.js
index 2de7272..702403e 100644
--- a/webpack.parts.js
+++ b/webpack.parts.js
@@ -9,7 +9,7 @@ const cssnano = require('cssnano');
 
 exports.extractCSS = ({ include, exclude, use = [] }) => {
   const plugin = new MiniCssExtractPlugin({
-    filename: "[name].css",
+    filename: "[name].[contenthash:4].css",
   });
 
   return {