fix: correctly load files specified in css

Author: dekimasoon

index.js

@@ -54,6 +54,14 @@ module.exports = (api, options) => {
           append: false,
           publicPath: false
         }])
+      // FIXME: This is a temporary patch.
+      // When the following PR is merged into file-loader, modify it to use cssOutputPath and useRelativePath.
+      // https://github.com/webpack-contrib/file-loader/pull/150
+      webpackConfig.plugin('extract-css')
+        .tap(args => {
+          args[0].filename = '[name].[contenthash:8].css',
+          args[0].chunkFilename = '[name].[id].[contenthash:8].css'
+        })
     }
   })