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reactjs - 在 React 服务器端渲染时 CSS-Module 类未定义

问题描述

我没有为 React SSR 使用 Webpack 配置。相反，这是我的配置：

require("@babel/register")({
  presets: ["@babel/preset-env", "@babel/preset-flow", "@babel/preset-react"],
  plugins: [
    "@babel/plugin-transform-runtime",
    "@babel/plugin-proposal-class-properties",
    "babel-plugin-dynamic-import-node",
    "@babel/plugin-transform-modules-commonjs",    
    [
      "module-resolver",
      {
        root: ["./src"]
      }
    ]
  ]
});

require("ignore-styles");

module.exports = require("./server.js");

问题是呈现的 html 中未定义 css 类。我怎样才能解决这个问题？

标签： reactjsserver-side-renderingcss-modulesbabel-register

解决方案

I finally added this plugin to babel:

[
  "css-modules-transform",
  {
    camelCase: true,
    extensions: [".css", ".scss"],
    preprocessCss: "./ssr/utils/SsrCssModuleHandler.js",
    generateScopedName: "[hash:base64:5]"
  }
]

in which SsrCssModuleHandler is a module:

    var sass = require('node-sass');

    var path = require('path');

    module.exports = function processSass(data, filename) {
        var result;
        result = sass.renderSync({
            data: data,
            file: filename
        }).css;
        return result.toString('utf8');
    };

and the problem is solved!

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