Webpack - 如何确定 CSS 文件的输出样式? [英] Webpack - how to determine output style of CSS file?

问题描述

当使用 Gulp 将 Sass 转换为 CSS 时，我可以选择 CSS 文件的输出样式:嵌套、扩展、紧凑和压缩.我有同样的机会使用 Webpack 吗?如果是，你能告诉我如何配置 Webpack 来实现我的目标吗?

When using Gulp to convert Sass to CSS, I can choose output style of the CSS file between: nested, expanded, compact and compressed. Do I have the same opportunity using Webpack? If yes, can you show me how to configurate Webpack to achieve my goal?

下面是我当前的 webpack.config.js - 它将 sass 转换为 css，将 ES6 转换为 ES5 并且完美运行:

Below is my current webpack.config.js - it converts sass to css, translate ES6 to ES5 and it works perfectly:

const ExtractTextPlugin = require("extract-text-webpack-plugin");

module.exports = {
    entry: [
        "./js/app.js",
        "./scss/main.scss"
    ],
    output: {
        filename: "./js/out.js"
    },
    watch: true,
    module: {
        loaders: [
            {
                test: /.js$/,
                exclude: /node_modules/,
                loader: "babel-loader",
                query: {
                    presets: ["es2015"]
                }
            }
        ],
        rules: [
            {
                test: /.scss$/,
                use: ExtractTextPlugin.extract({
                    fallbackLoader: "style-loader",
                    use: ["css-loader?-url", "sass-loader?-url"]
                })
            }
        ]
    },
    plugins: [
        new ExtractTextPlugin({
            filename: "./css/main.css",
            disable: false,
            allChunks: true
        })
    ]
}

提前致谢！

推荐答案

您正在使用 sass-loader，它在底层使用了 node-sass.自述文件 说您可以将选项直接传递给 node-sass 通过指定 options 属性.您可以通过这种方式传入 outputStyle 设置.它看起来像这样:

You are using sass-loader, which uses node-sass under the hood. The readme says that you can pass options directly to node-sass by specifying an options property. You can pass in the outputStyle setting this way. It would look like this:

{
    test: /.scss$/,
    use: ExtractTextPlugin.extract({
        fallbackLoader: "style-loader",
        use: [{
            loader: 'css-loader'
        }, {
            loader: 'sass-loader',
            options: {
                outputStyle: 'expanded'
            }
        }]
    })
}

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