Use prod mode when generating build

package.json

@@ -10,7 +10,7 @@
   "scripts": {
     "serve": "vue-cli-service serve",
     "build-app": "vue-cli-service build",
-    "build-lib": "rollup -c && node build-meta && gulp build-styles",
+    "build-lib": "NODE_ENV=production rollup -c && node build-meta && gulp build-styles",
     "lint": "vue-cli-service lint",
     "test:unit": "vue-cli-service test:unit"
   },

rollup.config.js

@@ -2,6 +2,8 @@ import vue from 'rollup-plugin-vue';
 import postcss from 'rollup-plugin-postcss';
 import { terser } from 'rollup-plugin-terser';
 
+console.log(process.env.NODE_ENV);
+
 const fs = require('fs-extra');
 const path = require('path');