message: package: don't ship sourcemaps in production mode
diff: @@ -96,7 +96,7 @@ module.exports = (env) => {
  filename: '[name].js',
  path: `${__dirname}/${DIST_FOLDER}`,
  },
  - devtool: 'source-map',
  + devtool: !IS_PRODUCTION && 'source-map',
  module: {
  rules: [
  {
  