带有sass-loader和resolve-url-loader的Webpack 4 - 未找到图像路径

Question

这里设置的重现性最低:https://github.com/jamesopti/webpack_playground/tree/resolve_url_loader_issue

我试图用resolve-url-loader我的scss url()图像路径添加一个hashname ,但我有一点时间让它与webpack 4一起工作.我有一堆图像/static/img/**在我的SCSS中被引用,如:

span.arrow {
  background: url(/static/img/audiences.png);
}

这最终在我的CSS中完全相同(resolve-url-loader找不到它们)

当我通过webpack运行以下配置时,我看到解析加载程序正在找到正确url()的路径,但调试模式是说找不到.

resolve-url-loader: /static/img/audiences.png
  /Users/usr1/webpack_playground/src
  /Users/usr1/webpack_playground/static/img
  NOT FOUND

是否有一些输出配置不正确？我尝试了各种设置组合无济于事:

  loader: 'resolve-url-loader',
  options: {
    debug: true,
    root: path.join(__dirname, './static/img'),
    includeRoot: true,
    absolute: true,
  },

我的最终目标是将文件加载器转换为/ dist散列版本:

span.arrow {
  background: url(/static/img/audiences-dhsye47djs82kdhe6.png);
}

// Webpack规则配置

rules: [
      {
        test: /\.(png|jpg|gif)$/,
        include: [
          path.resolve(__dirname, './static/img'),
        ],
        use: {
          loader: 'file-loader',
          options: {
            name: '[name]-[hash].[ext]',
          },
        },
      },
      {
        test: /\.svg$/,
        use: {
          loader: 'svg-inline-loader',
          options: {
            name: '[name]-[hash].[ext]',
          },
        },
      },
      { test: /\/src\/js\/(?:.*)\.css$/, use: [ { loader: 'style-loader' }, { loader: 'css-loader' } ] },
      {
        test: [/\.scss$/, /\.sass$/],
        use: [
          MiniCssExtractPlugin.loader,
          {
            loader: 'css-loader',
            options: {
              sourceMap: true,
            },
          },
          {
            loader: 'resolve-url-loader',
            options: {
              debug: true,
              root: './static/img',
              includeRoot: true,
            },
          },
          {
            loader: 'sass-loader',
            options: {
              outputStyle: 'compressed',
              sourceMap: true,
              includePaths: [
                './src'
              ],
            },
          },
        ],
      },
]

Answer 1

事实证明，我所需要的只是file-loader做我想做的事。

当任何 css/sass/style 加载器遇到图像（匹配我指定的文件扩展名）时，它会通过 进行处理file-loader，这两者都将其复制到指定命名格式指定的输出目录，并将 sass 加载器的名称返回到用作文件名。

rules: [
  {
    test: /\.(png|jpg|gif|svg)$/,
    exclude: [
      path.resolve(__dirname, './node_modules'),
    ],
    use: {
      loader: 'file-loader',
      options: {
        name: '[path][name]-[hash].[ext]',
        outputPath: '../',
        publicPath: '/dist',
      },
    },
  },
  {
    test: /\.svg$/,
    include: [
      path.resolve(__dirname, './node_modules'),
    ],
    use: {
      loader: 'svg-inline-loader',
      options: {
        name: '[name]-[hash].[ext]',
      },
    },
  },
  { test: /\/src\/js\/(?:.*)\.css$/, use: [ { loader: 'style-loader' }, { loader: 'css-loader' } ] },
  {
    test: [/\.scss$/, /\.sass$/],
    use: [
      MiniCssExtractPlugin.loader,
      {
        loader: 'css-loader',
        options: {
          sourceMap: true,
          root: path.resolve(__dirname),
        },
      },
      {
        loader: 'postcss-loader',
        options: {
          ident: 'postcss',
          plugins: () => [
            autoprefixer({
              'browsers': ['last 2 versions', 'ie >= 10'],
            }),
          ],
          sourceMap: true,
        },
      },
      {
        loader: 'sass-loader',
        options: {
          outputStyle: 'compressed',
          sourceMap: true,
          includePaths: [
            './src/scss',
          ],
        },
      },
    ],
  },
  {
    test: /\.html$/,
    use: [
      {
        loader: 'html-loader',
        options: {
          root: path.resolve(__dirname),
        },
      },
    ],
  },
  {
    test: [
      /\/bundles\/(?:.*)\.js$/,
    ],
    use: {
      loader: 'babel-loader',
    },
  },
];