chore: remove shx dependency

build/webpack.dev.js

@@ -7,8 +7,8 @@ exports.output.filename = 'eruda.js'
 exports.devtool = 'source-map'
 exports.plugins = exports.plugins.concat([
   new webpack.DefinePlugin({
-    ENV: '"development"'
-  })
+    ENV: '"development"',
+  }),
 ])
 
 module.exports = exports