chore: update index.js, close: #1846 (#2838)

index.js

@@ -1,34 +1,9 @@
-/* eslint no-console:0 */
 // this file is not used if use https://github.com/ant-design/babel-plugin-antd
 
-function camelCase(name) {
-  return name.charAt(0).toUpperCase() +
-    name.slice(1).replace(/-(\w)/g, (m, n) => {
-      return n.toUpperCase();
-    });
-}
+import warn from 'rc-util/lib/warn';
+import * as antd from './components';
 
-const req = require.context('./components', true, /^\.\/[^_][\w-]+\/(style\/)?index\.tsx?$/);
+warn('You are using prebuilt antd, ' +
+     'please use https://github.com/ant-design/babel-plugin-antd to reduce app bundle size.');
 
-req.keys().forEach((mod) => {
-  let v = req(mod);
-  if (v && v.default) {
-    v = v.default;
-  }
-  const match = mod.match(/^\.\/([^_][\w-]+)\/index\.tsx?$/);
-  if (match && match[1]) {
-    if (match[1] === 'message' || match[1] === 'notification') {
-      // message & notification should not be capitalized
-      exports[match[1]] = v;
-    } else {
-      exports[camelCase(match[1])] = v;
-    }
-  }
-});
-
-if (process.env.NODE_ENV !== 'production') {
-  if (typeof console !== 'undefined' && console.warn) {
-    console.warn(`You are using prebuilt antd,
-please use https://github.com/ant-design/babel-plugin-antd to reduce app bundle size.`);
-  }
-}
+export default antd;