嘿，我正在做一个简单的react+SSR项目，它包含了isomorphic-style loader。我遵循了分步指南来实现它，详细内容如下https://www.npmjs.com/package/isomorphic-style-loader但它就是不起作用。我做的样式没有表现出来。有人能指导我解决这个问题吗？
这是我的webpack config
var path = require('path');
var webpack = require('webpack');
var nodeExternals = require('webpack-node-externals');
var browserConfig = {
entry: './src/browser/index.js',
output: {
path: path.resolve(__dirname, 'public'),
filename: 'bundle.js',
publicPath: '/',
},
module: {
rules: [
{ test: /.(js)$/, use: 'babel-loader' },
{
test: /.css$/,
use: [
'isomorphic-style-loader',
{
loader: 'css-loader',
options: {
importLoaders: 1,
},
},
'postcss-loader',
],
},
],
},
mode: 'production',
plugins: [
new webpack.DefinePlugin({
__isBrowser__: 'true',
}),
],
};
var serverConfig = {
entry: './src/server/index.js',
target: 'node',
externals: [nodeExternals()],
output: {
path: __dirname,
filename: 'server.js',
publicPath: '/',
},
mode: 'production',
module: {
rules: [
{ test: /.(js)$/, use: 'babel-loader' },
{
test: /.css$/,
use: [
'isomorphic-style-loader',
{
loader: 'css-loader',
options: {
importLoaders: 1,
},
},
'postcss-loader',
],
},
],
},
plugins: [
new webpack.DefinePlugin({
__isBrowser__: 'false',
}),
],
};
module.exports = [browserConfig, serverConfig];
这是我的index.js (server)
import express from 'express';
import cors from 'cors';
import React from 'react';
import { renderToString } from 'react-dom/server';
import { StaticRouter, matchPath } from 'react-router-dom';
import serialize from 'serialize-javascript';
import StyleContext from 'isomorphic-style-loader/StyleContext';
import App from '../shared/App';
import routes from '../shared/routes';
const app = express();
app.use(cors());
app.use(express.static('public'));
app.get('*', (req, res, next) => {
const css = new Set(); // CSS for all rendered React components
const insertCss = (...styles) =>
styles.forEach((style) => css.add(style._getCss()));
const activeRoute = routes.find((route) => matchPath(req.url, route)) || {};
const promise = activeRoute.fetchInitialData
? activeRoute.fetchInitialData(req.path)
: Promise.resolve();
promise
.then((data) => {
const context = { data };
const markup = renderToString(
<StyleContext.Provider value={{ insertCss }}>
<StaticRouter location={req.url} context={context}>
<App />
</StaticRouter>
</StyleContext.Provider>
);
res.send(`
<!DOCTYPE html>
<html>
<head>
<title>SSR with RR</title>
<script src="/bundle.js" defer></script>
<script>window.__INITIAL_DATA__ = ${serialize(data)}</script>
<style type="text/css">${[...css].join('')}</style>
</head>
<body>
<div id="app">${markup}</div>
</body>
</html>
`);
})
.catch(next);
});
app.listen(3000, () => {
console.log(`Server is listening on port: 3000`);
});
这是我的index.js (browser)
import React from 'react';
import { hydrate } from 'react-dom';
import App from '../shared/App';
import { BrowserRouter } from 'react-router-dom';
import StyleContext from 'isomorphic-style-loader/StyleContext';
const insertCss = (...styles) => {
const removeCss = styles.map((style) => style._insertCss());
return () => removeCss.forEach((dispose) => dispose());
};
hydrate(
<StyleContext.Provider value={{ insertCss }}>
<BrowserRouter>
<App />
</BrowserRouter>
</StyleContext.Provider>,
document.getElementById('app')
);
并且这里是CCD_ 7内部的使用不工作的CCD_。
import React from 'react';
import { NavLink } from 'react-router-dom';
import style from './css/style.css';
import withStyles from 'isomorphic-style-loader/withStyles';
function Navbar() {
const languages = [
{
name: 'All',
param: 'all',
},
{
name: 'JavaScript',
param: 'javascript',
},
{
name: 'Ruby',
param: 'ruby',
},
{
name: 'Python',
param: 'python',
},
{
name: 'Java',
param: 'java',
},
];
return (
<ul className='navbar'>
{languages.map(({ name, param }) => (
<li key={param}>
<NavLink
activeStyle={{ fontWeight: 'bold' }}
to={`/popular/${param}`}
>
{name}
</NavLink>
</li>
))}
</ul>
);
}
export default withStyles(style)(Navbar);
我也遇到了同样的问题。问题与css加载程序有关。默认情况下，css加载程序生成使用ES模块语法的JS模块。同构样式加载器需要CommonJS模块语法。
试试这个：
{
loader: 'css-loader',
options: {
importLoaders: 1,
esModule: false,
},
}