vue按需引入element Transfer 穿梭框

import {
 ...
 Transfer
} from 'element-ui';
const components = [
 ...
 Transfer
];
components.map(component => {
 Vue.component(component.name, component);
});

{
 "presets": [
  ["env", {
   "modules": false,
   "targets": {
    "browsers": ["> 1%", "last 2 versions", "not ie <= 8"]
   }
  }],
  "stage-2"
 ],
 "plugins": [["component", [
  {
   "libraryName": "element-ui",
   "styleLibraryName": "theme-default"
  }
 ]], "transform-runtime", "transform-vue-jsx"],
 "comments": false
}

npm install babel-plugin-syntax-jsx --save-dev
npm install babel-plugin-transform-vue-jsx --save-dev
npm install babel-helper-vue-jsx-merge-props --save-dev