Javascript Webpack 4、postcss-loader 和 autoprefixer 插件

Webpack 4, postcss-loader and autoprefixer plugin

提问by doublea

I'm getting quite frustrated trying to get autoprefixer working.

试图让 autoprefixer 工作时，我感到非常沮丧。

Here is my webpack.config.js

这是我的webpack.config.js

const HtmlWebPackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");

const config = {
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /node_modules/,
                use: {
                    loader: "babel-loader"
                }
            },
            {
                test: /\.(scss)$/,
                use: [
                    MiniCssExtractPlugin.loader,
                    { loader: "css-loader", options: {} },
                    { loader: "postcss-loader", options: {} },
                    // {
                    //  loader: "postcss-loader",
                    //  options: {
                    //      ident: "postcss",
                    //      plugins: (loader) => [
                    //          require('autoprefixer')({ browsers: ['defaults']})
                    //      ]
                    //  }
                    // },
                    { loader: "sass-loader", options: {} }
                ]
            },
            {
                test: /\.mp3$/,
                use: {
                    loader: "file-loader"
                }
            }
        ]
    },
    plugins: [
        new HtmlWebPackPlugin({
            template: "./src/index.html",
            filename: "./index.html"
        }),
        new MiniCssExtractPlugin({
            filename: "main.css"
        })
    ]
};

module.exports = config;

Here is my postcss.config.js

这是我的postcss.config.js

module.exports = {
  plugins: [
    require('autoprefixer')()
  ]
}

Currently my package.jsonis holding my browserslist options

目前我的package.json持有我的 browserslist 选项

As you can see I've tried using the webpack file to hold my config settings for postcss-loader and I've also tried creating a separate config file.

正如你所看到的，我已经尝试使用 webpack 文件来保存我的 postcss-loader 配置设置，我也尝试创建一个单独的配置文件。

I've tried moving the browserslist but I don't think that's the issue bc I run npx browserslistand I can see a list of browsers that were selected.

我试过移动浏览器列表，但我认为这不是我运行的问题npx browserslist，我可以看到选择的浏览器列表。

My postcss-loaderdeclaration in my webpack config comes after css-loaderand before sass-loader

我postcss-loader在 webpack 配置中的声明css-loader前后出现sass-loader

I also receive no errors in my console when I run webpack so not sure what is happening but could really use some help!

当我运行 webpack 时，我的控制台也没有收到任何错误，所以不确定发生了什么，但真的可以使用一些帮助！

回答by ynceonrudi

Not working but { browsers: ['defaults']}

不工作但是 { browsers: ['defaults']}

Try:

尝试：

     {
        test: /\.css$/,
        use: [
            MiniCssExtractPlugin.loader,
            'css-loader?modules&importLoaders=1&localIdentName=[local]_[hash:base64:6]',
            {
                loader: 'postcss-loader',
                options: {
                    plugins: () => [require('autoprefixer')({
                        'browsers': ['> 1%', 'last 2 versions']
                    })],
                }
            },
        ]
    }

or

或者

// postcss.config.js

module.exports = {
    plugins: [
        require('autoprefixer')({
            'browsers': ['> 1%', 'last 2 versions']
        })
    ]
};

回答by altrugon

The big picture here is that you are actually missing the Autoprefixerpackage on your environment, so to fix the problem you have two solutions:

这里的大局是您实际上在您的环境中缺少Autoprefixer包，因此要解决该问题，您有两种解决方案：

Solution 1

解决方案1

npm install --save-dev postcss-loader autoprefixer

Now inside your postcss.config.jsfile you can add something like this:

现在在您的postcss.config.js文件中，您可以添加如下内容：

module.exports = {
  plugins: [
    require('autoprefixer')({
      'browsers': ['> 1%', 'last 2 versions']
    })
  ]
};

Solution 2 (recommended)

解决方案2（推荐）

This one comes from PostCSS Loader documentation, and since you are using this package perhaps this is the recommended way to go.

这个来自PostCSS Loader 文档，因为你正在使用这个包，所以这可能是推荐的方法。

postcss-preset-envincludes autoprefixer, so adding it separately is not necessary if you already use the preset.

postcss-preset-env包含autoprefixer，因此如果您已经使用了预设，则无需单独添加它。

As you can see in order to get Autoprefixer you just need to install PostCSS Preset Env.

正如您所看到的，为了获得 Autoprefixer，您只需要安装PostCSS Preset Env。

npm install --save-dev postcss-loader postcss-preset-env

Now get rid of your postcss.config.jsfile and move that configuration into your webpack.config.jsto make it look to something like this:

现在摆脱你的postcss.config.js文件并将该配置移动到你的webpack.config.js 中，使其看起来像这样：

...
rules: [
  {
    test: /\.(sa|sc|c)ss$/,
    use: [
      MiniCssExtractPlugin.loader,
      { loader: "css-loader", options: {} },
      {
        loader: "postcss-loader",
        options: {
          ident: 'postcss',
          plugins: [
            require('autoprefixer')({
              'browsers': ['> 1%', 'last 2 versions']
            }),
          ]
        }
      },
      { loader: "sass-loader", options: {} }
    ]
  }
]
...

I hope this helps, it also took me a long time to figure it out too ;)

我希望这会有所帮助，我也花了很长时间才弄明白;)

回答by dlemm

As mentioned above, you need to specify the browser-list. But instead of adding this to your webpack.configand to the postcss-configyou can add the following code simply to the package.jsonafter the dependencies. Worked for me.

如上所述，您需要指定浏览器列表。但是webpack.config，postcss-config您可以将以下代码简单地添加到package.json依赖项之后，而不是将其添加到您的和。为我工作。

"browserslist": [
  "> 1%",
  "last 2 versions"
],

回答by u6176355

Try edit like this

尝试像这样编辑

webpack.config.js:

webpack.config.js：

{
            test: /\.scss$/,
            use: [
                "style-loader", "css-loader", 'postcss-loader', 'resolve-url-loader', 'sass-loader?sourceMap'
            ]
        },

postcss.config.js:

postcss.config.js：

require('autoprefixer')({browsers: ['last 10 versions']}),