如何使用webpack内联CSS中的字体?

Axe*_*xel 10 javascript css data-uri webpack

问题背景:我正在使用katex在页面上渲染一些数学。然后,我想创建该页面一部分的PDF版本,因此我创建了一个HTML文档,其中包含要导出的部分,它内联了所有CSS并将其传递给渲染器。渲染器无法访问节点资源,这就是内联所有内容的原因。除字体外,它运行完美。

我同时尝试了url-loader和bas64-inline-loader,但是生成的字体没有内联。我在调试器中检查了生成的CSS,旧的URL仍然存在,没有字体的data-URL。

这是我当前的webpack.config.js:

const path = require('path');
const {CleanWebpackPlugin} = require('clean-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
    mode: 'development',
    entry: {
        "editor": './src/editor.js',
        "editor.worker": 'monaco-editor/esm/vs/editor/editor.worker.js',
        "json.worker": 'monaco-editor/esm/vs/language/json/json.worker',
        "css.worker": 'monaco-editor/esm/vs/language/css/css.worker',
        "html.worker": 'monaco-editor/esm/vs/language/html/html.worker',
        "ts.worker": 'monaco-editor/esm/vs/language/typescript/ts.worker',
    },
    output: {
        globalObject: 'self',
        filename: '[name].bundle.js',
        path: path.resolve(__dirname, 'dist')
    },
    module: {
        rules: [
            {
                test: /\.(woff|woff2|ttf|eot|svg)(\?v=\d+\.\d+\.\d+)?$/,
                use: ['url-loader']
            },
            {
                test: /\.css$/,
                use: ['style-loader', 'css-loader']
            }
        ]
    },
    plugins: [
        new CleanWebpackPlugin(),
        new HtmlWebpackPlugin({
            filename: 'editor_text.html',
            template: 'src/editor_text.html'
        }),
        new HtmlWebpackPlugin({
            filename: 'editor_markdown.html',
            template: 'src/editor_markdown.html',
            inlineSource: '/katex/.*'
        })
    ]
};
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Grz*_* T. 4

最好的方法是使用 postcss-cli 和 postcss-inline-base64

网页包:

{
  test: /\.(css|sass|scss)$/,
  use: [
    MiniCssExtractPlugin.loader,
    {
      loader: 'css-loader',
      options: {
        importLoaders: 2,
        sourceMap: true
      },
    },
    {
      loader: 'postcss-loader', // important
      options: {
        sourceMap: true,
        config: {
          path: './config/',
        },
      },
    },
    {
      loader: 'sass-loader',
      options: {
        sourceMap: true,
      },
    },
  ],
}, {
  test: /\.(woff(2)?|ttf|eot|svg)(\?v=\d+\.\d+\.\d+)?$/,
  use: [{
    loader: 'file-loader',
  }]
},
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创建配置文件夹宽度 postcss.config.js

module.exports = {
  plugins: {
    'postcss-inline-base64': {
      baseDir: './sources/'
    },
  },
};
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baseDir 是字体的路径。在 scss 文件中,我以这种方式添加字体:

@font-face {
  font-family: 'Lato-Light';
  src: url('b64---../fonts/Lato-Light.ttf---') format('truetype');
  font-weight: normal;
  font-style: normal;
}
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通过这项工作,我们得到了一个很好的将字体转换为 Base64 的结果@font-face{font-family:Lato-Light;src:url("data:font/ttf;charset=utf-8;base64,...

更新: 我准备了一个小例子postcss-inline-base64