vue引入element-ui，運行時報了這個錯誤

Module build failed: Error: Couldn't find preset "es2015" relative to directory "D:\\360MoveData\\Users\\Administrator\\Desktop\\新建文件夾\\henge-test"at D:\360MoveData\Users\Administrator\Desktop\新建文件夾\henge-test\node_modules\babel-core\lib\transformation\file\options\option-manager.js:293:19at Array.map (<anonymous>)at OptionManager.resolvePresets (D:\360MoveData\Users\Administrator\Desktop\新建文件夾\henge-test\node_modules\babel-core\lib\transformation\file\options\option-manager.js:275:20)at OptionManager.mergePresets (D:\360MoveData\Users\Administrator\Desktop\新建文件夾\henge-test\node_modules\babel-core\lib\transformation\file\options\option-manager.js:264:10)at OptionManager.mergeOptions (D:\360MoveData\Users\Administrator\Desktop\新建文件夾\henge-test\node_modules\babel-core\lib\transformation\file\options\option-manager.js:249:14)at OptionManager.init (D:\360MoveData\Users\Administrator\Desktop\新建文件夾\henge-test\node_modules\babel-core\lib\transformation\file\options\option-manager.js:368:12)at File.initOptions (D:\360MoveData\Users\Administrator\Desktop\新建文件夾\henge-test\node_modules\babel-core\lib\transformation\file\index.js:212:65)at new File (D:\360MoveData\Users\Administrator\Desktop\新建文件夾\henge-test\node_modules\babel-core\lib\transformation\file\index.js:135:24)    at Pipeline.transform (D:\360MoveData\Users\Administrator\Desktop\新建文件夾\henge-test\node_modules\babel-core\lib\transformation\pipeline.js:46:16)at transpile (D:\360MoveData\Users\Administrator\Desktop\新建文件夾\henge-test\node_modules\babel-loader\lib\index.js:50:20)at Object.module.exports (D:\360MoveData\Users\Administrator\Desktop\新建文件夾\henge-test\node_modules\babel-loader\lib\index.js:173:20)     @ multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./src/main.js

按照element-ui中的步驟 把.babelrc 文件內容從

{"presets": [["env", {"modules": false,"targets": {"browsers": ["> 1%", "last 2 versions", "not ie <= 8"]}}],"stage-2"],"plugins": ["transform-vue-jsx", "transform-runtime"]
}

更改為了

{"presets": [["es2015", { "modules": false }]],"plugins": [["component",{"libraryName": "element-ui","styleLibraryName": "theme-chalk"}]]
}

然后運行時就報了這個問題

解決方案：
安裝es2015 工具

npm install --save-dev babel-preset-es2015