Defaults are fine for most babel plugins

babel.config.js

@@ -35,46 +35,16 @@ module.exports = function(api) {
       'babel-plugin-macros',
       '@babel/plugin-syntax-dynamic-import',
       isTestEnv && 'babel-plugin-dynamic-import-node',
-      [
       '@babel/plugin-proposal-class-properties',
-        {
+      '@babel/plugin-proposal-private-methods',
-          loose: true
+      '@babel/plugin-proposal-private-property-in-object',
-        }
-      ],
-      [
-        "@babel/plugin-proposal-private-methods",
-        {
-          loose: true
-        }
-      ],
-      [
-        "@babel/plugin-proposal-private-property-in-object",
-        {
-          loose: true
-        }
-      ],
-      [
-        '@babel/plugin-proposal-object-rest-spread',
-        {
-          useBuiltIns: true
-        }
-      ],
-      [
       '@babel/plugin-transform-runtime',
-        {
-          helpers: false
-        }
-      ],
-      [
       '@babel/plugin-transform-regenerator',
-        {
+      '@babel/plugin-proposal-object-rest-spread',
-          async: false
-        }
-      ],
       [
-        "@babel/plugin-transform-spread",
+        '@babel/plugin-transform-spread',
         {
-          "loose": true
+          loose: true
         }
       ]
     ].filter(Boolean)