webpack 編譯報錯 Couldn't find preset "env"

ERROR in ./product/entry/login.js
Module build failed: Error: Couldn't find preset "env" relative to directory "D:\\work\\Vue\\cdm-builder\\cdm\\src\\web"
    at D:\work\Vue\cdm-builder\cdm\src\web\node_modules\babel-core\lib\transformation\file\options\option-manager.js:293:19
    at Array.map (native)
    at OptionManager.resolvePresets (D:\work\Vue\cdm-builder\cdm\src\web\node_modules\babel-core\lib\transformation\file\options\option-manager.js:275:20)
    at OptionManager.mergePresets (D:\work\Vue\cdm-builder\cdm\src\web\node_modules\babel-core\lib\transformation\file\options\option-manager.js:264:10)
    at OptionManager.mergeOptions (D:\work\Vue\cdm-builder\cdm\src\web\node_modules\babel-core\lib\transformation\file\options\option-manager.js:249:14)
    at OptionManager.init (D:\work\Vue\cdm-builder\cdm\src\web\node_modules\babel-core\lib\transformation\file\options\option-manager.js:368:12)
    at File.initOptions (D:\work\Vue\cdm-builder\cdm\src\web\node_modules\babel-core\lib\transformation\file\index.js:212:65)
    at new File (D:\work\Vue\cdm-builder\cdm\src\web\node_modules\babel-core\lib\transformation\file\index.js:135:24)
    at Pipeline.transform (D:\work\Vue\cdm-builder\cdm\src\web\node_modules\babel-core\lib\transformation\pipeline.js:46:16)
    at transpile (D:\work\Vue\cdm-builder\cdm\src\web\node_modules\babel-loader\lib\index.js:46:20)
    at Object.module.exports (D:\work\Vue\cdm-builder\cdm\src\web\node_modules\babel-loader\lib\index.js:163:20)
 @ multi main

錯誤原因:


在 .babelrc 文件中設置了env 選項,這需要 babel-preset-env 

npm install babel-preset-env --save-dev 依賴引入



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