BrowserslistError：React / Express App中未知的浏览器查询“死”

Question

当我运行'npm start'时，应用程序启动正常，但是'npm run build'在终端中给我以下消息：

> workout_tracker@0.1.0 build /Users/*******/mern-workout/client
> react-scripts build

Creating an optimized production build...
Failed to compile.

./src/Components/UI/Spinner/Spinner.module.css
Module build failed: BrowserslistError: Unknown browser query `dead`
    at Array.forEach (<anonymous>)


npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! workout_tracker@0.1.0 build: `react-scripts build`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the workout_tracker@0.1.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional 
logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/*******/.npm/_logs/2018-10-22T23_21_04_691Z-debug.log

我进行了搜索，但是，唯一的解决方案似乎是针对使用Angular的人，他们的Bootstrap版本有问题。我没有在我的应用程序中使用Bootstrap。

我试图从browserslist数组中删除“ not dead”只是为了看看会发生什么，而我得到了这个：

Creating an optimized production build...
Failed to compile.

Failed to minify the code from this file: 

    ./node_modules/query-string/index.js:8 

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! workout_tracker@0.1.0 build: `react-scripts build`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the workout_tracker@0.1.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/******/.npm/_logs/2018-10-22T23_41_55_488Z-debug.log

这是我的package.json文件：

 {
  "name": "workout_tracker",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "axios": "^0.18.0",
    "browserslist": "^4.3.1",
    "cssnano": "^4.1.7",
    "firebase": "^5.3.0",
    "jw-paginate": "^1.0.2",
    "jw-react-pagination": "^1.0.7",
    "normalize.css": "^8.0.0",
    "query-string": "^6.2.0",
    "random-id": "0.0.2",
    "react": "^16.5.2",
    "react-dom": "^16.5.2",
    "react-headroom": "^2.2.2",
    "react-icons-kit": "^1.1.6",
    "react-redux": "^5.0.7",
    "react-router-dom": "^4.3.1",
    "react-scripts-cssmodules": "^1.1.10",
    "react-swipe-to-delete-component": "^0.3.4",
    "react-swipeout": "^1.1.1",
    "redux": "^4.0.0",
    "redux-thunk": "^2.3.0"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  },
  "devDependencies": {
    "css-loader": "^1.0.0",
    "redux-devtools-extension": "^2.13.5",
    "webpack": "^3.8.1"
  },
  "browserslist": [
    ">0.2%",
    "not dead",
    "not ie <= 11",
    "not op_mini all"
  ],
  "proxy": "http://localhost:4000"
}

Answer 1

When using React please take a look into your package.json. You may find the following added there.

  "browserslist": [
    ">0.2%",
    "not dead",
    "not ie <= 11",
    "not op_mini all"
  ]

Remove "not dead", and run yarn run build again. Fixed the issue for me.

Answer 2

'dead' 描述出现在较新的版本中。换句话说，../node_modules/autoprefixer-stylus/node_modules/browserslist/index.js 中没有定义“死”。

如果你打开上面的 ../browserlist/index.js 文件，你会看到：

var QUERIES = [
  {
    regexp: /^last\s+(\d+)\s+major versions?$/i,
    select: function (context, versions) ...
  },
  ...,
]

您可以在其中添加以下内容：

{
  regexp: /^dead$/i,
  select: function (context) {
    var dead = ['ie <= 10', 'ie_mob <= 10', 'bb <= 10', 'op_mob <= 12.1']
    return resolve(dead, context)
  }
}

这对我来说很好，而无需更改 package-json.lock 中的依赖项版本

Answer 3

如果您有另一个使用非常旧的浏览器列表的工具，就会发生这种情况。

致电npm ls，找到谁使用 Browserslist < 4 并在那里打开问题以更新依赖项。