Webpack2不理解我的SASS文件中的@import语句(如何使用webpack2编译SASS?)

时间:2017-02-05 23:05:44

标签: javascript sass webpack webpack-2 sass-loader

Using Webpack 2sass-loader 4.11

webpack --config webpack.config.js

enter image description here

这是我的webpack.config.js

var path = require('path');
var sass = require("./sass/lifeleveler.scss");

module.exports = {
    entry: './dist/main.js',
    output: {
        filename: 'lifeleveler.app.js',
        path: path.resolve(__dirname, 'dist')
    },
    watch: true,
    watchOptions: {
        aggregateTimeout: 300,
        poll: 1000,
        ignored: /node_modules/
    },
    module: {
        loaders: [
            {
                test: /\.scss$/,
                include: [
                    path.resolve(__dirname, 'node_modules'),
                    path.resolve(__dirname, './sass')
                ],
                loaders: ["style-loader", "css-loader", "sass-loader"]
            }
        ],
        rules: [
            {
                test: /\.tsx?$/,
                loader: 'ts-loader',
                exclude: /node_modules/,
            },
            {
                enforce: 'pre',
                test: /\.tsx?$/,
                use: "source-map-loader"
            }
        ]
    },
    sassLoader: {
        includePaths: [path.resolve(__dirname, "./sass")]
    },
    resolve: {
        modulesDirectories: ['./sass'],
        extensions: [".tsx", ".ts", ".js", "scss"]
    },
    devtool: 'inline-source-map'
};

请注意我在配置顶部尝试此操作时:

var css = require("!raw-loader!sass-loader!./sass/lifeleveler.scss");
var css = require("!css-loader!sass-loader!./sass/lifeleveler.scss");

出现此错误:

  

错误:找不到模块'!raw-loader!sass-loader!./ sass / lifeleveler.scss'

这就是为什么我这样做的原因:var sass = require("./sass/lifeleveler.scss");

我的lifeleveler.scss文件(from my SASS project starter kit):

@import "vendors/normalize";    // Normalize stylesheet
@import "vendors/reset";        // Reset stylesheet
@import "modules/base";         // Load base files
@import "modules/defaults";     // Defaults elements
@import "modules/inputs";       // Inputs & Selects
@import "modules/buttons";      // Buttons
@import "modules/layout";       // Load Layouts
@import "modules/svg";          // Load SVG
@import "modules/queries";      // Media Queries

最后我的文件夹结构,你看到任何明显的问题吗?

enter image description here

I found this solution here,但我将./sass路径添加到modulesDirectories数组但仍然收到错误。

经过多次挖掘后,我也发现了this Github issue and solution here,但他的修复对我来说也不起作用:(

2 个答案:

答案 0 :(得分:9)

我在这里重现了你的问题,并且能够解决它。

首先,您需要更改webpack配置文件。一些要点:

  1. scss加载器置于rules选项中,并将每个加载器分隔为一个对象(如this);
  2. 摆脱配置顶部的行var sass = require("./sass/lifeleveler.scss");。应该从入口点JS调用该文件。在这种情况下:dist/main.js。此时(在读取配置之前),webpack未配置为加载任何内容。这导致你出现的错误。
  3. 摆脱sassLoader.includePathsresolve.modulesDirectories,因为它们无效 webpack 2 键。
  4. Webpack 2 配置结构与 Webpack 1 略有不同(您可以查看官方迁移指南here)..

    工作webpack.config.js文件将是这样的:

    var path = require('path');
    
    
    module.exports = {
        entry: './dist/main.js',
        output: {
            filename: 'lifeleveler.app.js',
            path: path.resolve(__dirname, 'dist')
        },
        watch: true,
        watchOptions: {
            aggregateTimeout: 300,
            poll: 1000,
            ignored: /node_modules/
        },
        module: {
            rules: [
                {
                    test: /\.scss$/,
                    include: [
                        path.resolve(__dirname, "sass")
                    ],             
                    use: [
                         { loader: "style-loader" },
                         { loader: "css-loader" },
                         { loader: "sass-loader" }
                    ]
                },
                {
                    test: /\.tsx?$/,
                    loader: 'ts-loader',
                    exclude: /node_modules/,
                },
                {
                    enforce: 'pre',
                    test: /\.tsx?$/,
                    use: "source-map-loader"
                }
            ]
        },
        resolve: {
            extensions: [".tsx", ".ts", ".js", "scss"]
        },
        devtool: 'inline-source-map'
    };
    

    main.js中,现在您可以要求调用scss文件:

    require('../sass/lifeleveler.scss'); //assuming main.js is at ./dist
    

    确保您已安装npm style-loadercss-loadernode-sasssass-loader

    现在编译正确!

答案 1 :(得分:3)

尝试将此配置发送到webpack.config.js

...
module: {
  rules: [
    {
      test: /.s?css$/,
      use: ExtractTextWebpack.extract({
        fallback: 'style-loader',
        use: [
          {
            loader: 'css-loader',
            options: {
              sourceMap: true,
              importLoader: true
            }
          },
          {
            loader: 'postcss-loader',
            options: {
              plugins: [
                ... // fill your config
              ]
            }
          },
          {
            loader: 'sass-loader',
            options: {
              ... // fill your config
            }
          }
        ]
      })
    }
  ]
},
plugins: [
  new ExtractTextWebpack({
    filename: 'bundle.css'
  })
]
...

这是您需要的依赖项版本。

"devDependencies": {
    "css-loader": "^0.26.1",
    "extract-text-webpack-plugin": "beta",
    "node-sass": "^4.5.0",
    "postcss-loader": "^1.2.2",
    "sass-loader": "^4.1.1",
    "style-loader": "^0.13.1",
    "webpack": "^2.2.1",
  }

不要忘记将style.scss root用于您的输入文件。

示例: 在您的./dist/main.js中,您需要写下require('../sass/liveleverer.scss')