巴貝爾預設-ENV語法錯誤：與擴展性

Question

意外令牌爲什麼它不接受擴展性？我爲此使用babel-preset-env。

.babelrc

{ 
    "presets": [ 
     "react", 
     [ 
      "env", 
      { 
       "targets": {}, 
       "debug": true, 
       "modules": "commonjs" 
      } 
     ] 
    ] 
} 

的package.json

{ 
    "name": "myapp", 
    "version": "0.1.0", 
    "main": "index.js", 
    "private": true, 
    "dependencies": { 
    "babel-core": "6.25.0", 
    "babel-loader": "7.1.1", 
    "babel-preset-env": "^1.6.0", 
    "babel-preset-react": "^6.24.1", 
    "extract-text-webpack-plugin": "3.0.0", 
    "file-loader": "0.11.2", 
    "html-webpack-plugin": "^2.30.1", 
    "moment": "^2.18.1", 
    "react": "^15.6.1", 
    "react-dom": "^15.6.1", 
    "react-router": "^4.1.2", 
    "react-router-dom": "^4.1.2", 
    "redux": "^3.7.2", 
    "redux-form": "^7.0.3", 
    "style-loader": "0.18.2", 
    "url-loader": "0.5.9", 
    "webpack": "3.5.1", 
    "webpack-dev-server": "2.7.1", 
    "webpack-node-externals": "^1.6.0" 
    }, 
    "scripts": { 
    "start": "", 
    "build": "webpack" 
    } 
} 

Answer 1

的Object rest spread運營商將可能是ECMAScript規範（它在階段3的將來的功能此時此刻）。

現在，它可以得到支持，感謝Babel，但你必須使用transform-object-rest-spread plugin。

{ 
    "presets": [ 
     "react", 
     [ 
      "env", 
      { 
       "targets": {}, 
       "debug": true, 
       "modules": "commonjs" 
      } 
     ], 
     "transform-object-rest-spread" 
    ] 
}