feat(core): make babel-preset configurable

Also add babel-runtime plugin

Author: gregberge

packages/smooth-core/package.json

@@ -35,10 +35,12 @@
   "dependencies": {
     "@babel/core": "^7.2.2",
     "@babel/plugin-proposal-class-properties": "^7.2.3",
+    "@babel/plugin-transform-runtime": "^7.2.0",
     "@babel/polyfill": "^7.2.5",
     "@babel/preset-env": "^7.2.3",
     "@babel/preset-react": "^7.0.0",
     "@babel/register": "^7.0.0",
+    "@babel/runtime": "^7.3.1",
     "@emotion/core": "^10.0.6",
     "@loadable/babel-plugin": "^5.2.2",
     "@loadable/component": "^5.2.2",

packages/smooth-core/src/babel/preset.js

@@ -6,7 +6,7 @@ const common = {
   ],
 }
 
-const nodeConfig = {
+const nodeConfig = opts => ({
   ...common,
   presets: [
     ...common.presets,
@@ -18,12 +18,13 @@ const nodeConfig = {
         targets: {
           node: 'current',
         },
+        ...opts['preset-env'],
       },
     ],
   ],
-}
+})
 
-const webConfig = {
+const webConfig = opts => ({
   ...common,
   presets: [
     ...common.presets,
@@ -33,18 +34,23 @@ const webConfig = {
         modules: false,
         loose: true,
         useBuiltIns: 'entry',
+        ...opts['preset-env'],
       },
     ],
   ],
-}
+  plugins: [
+    ...common.plugins,
+    ['@babel/plugin-transform-runtime', opts['transform-runtime']],
+  ],
+})
 
 function isWebTarget(caller) {
   return Boolean(caller && caller.name === 'babel-loader')
 }
 
-module.exports = api => {
+module.exports = (api, opts = {}) => {
   if (api.caller(isWebTarget)) {
-    return webConfig
+    return webConfig(opts)
   }
-  return nodeConfig
+  return nodeConfig(opts)
 }