compress all dist outputs

packages/styled-components/rollup.config.js

@@ -44,15 +44,15 @@ const commonPlugins = [
   replace({
     __VERSION__: JSON.stringify(pkg.version),
   }),
+  terser({
+    sourcemap: true,
+  }),
 ];
 
 const prodPlugins = [
   replace({
     'process.env.NODE_ENV': JSON.stringify('production'),
   }),
-  terser({
-    sourcemap: true,
-  }),
 ];
 
 const configBase = {