Question

我正在设置一个基本的Webpack安装，并希望使用PostCSS和PreCSS插件在@imported文件中自动浏览器重新加载预处理的CSS。目前，如果我修改并保存@imported文件，浏览器不刷新（下面的例子中为body.css）。如果我然后保存根引用的CSS文件（styles.css），那么浏览器将刷新并反映对@imported文件所做的任何更改。

我尝试过使用可配置的webpack-dev-server，并使用server.js。我已经尝试过没有安装热模型重装（HMR）。

有没有办法让webpack观看@imported CSS文件，还是我从根本上错过了什么？

的package.json

"dependencies": {
  "react": "^0.14.0",
  "react-dom": "^0.14.0"
},
"devDependencies": {
  "autoprefixer": "^6.3.1",
  "css-loader": "^0.23.1",
  "extract-text-webpack-plugin": "^1.0.1",
  "postcss-loader": "^0.8.0",
  "postcss-scss": "^0.1.3",
  "precss": "^1.4.0",
  "react-hot-loader": "^1.3.0",
  "style-loader": "^0.13.0",
  "webpack": "^1.12.13",
  "webpack-dev-server": "^1.14.1"
},
"scripts": {
  "test": "echo \"Error: no test specified\" && exit 1",
  "start": "node server.js",
  "start-dev-server": "webpack-dev-server 'webpack-dev-server/client?/' --host 0.0.0.0 --port 9090 --progress --colors",
  "build": "echo \"Build hasn't been specified yet\" && exit 1"
},

webpack.config.js

/*global require module __dirname*/
var path = require('path'),
    webpack = require('webpack'),
    ExtractTextPlugin = require('extract-text-webpack-plugin'),
    autoprefixer = require('autoprefixer'),
    precss = require('precss');

module.exports = {
    entry: [
    'webpack-dev-server/client?http://localhost:9090',
    'webpack/hot/only-dev-server',
    './entry.js'
  ],
    output: {
        path: path.join(__dirname, 'dist'),
        filename: 'bundle.js',
        publicPath: '/static/'
    },
    devtool: 'source-map',
    module: {
        loaders: [
            { 
                test: /\.css$/i,
                loaders: ExtractTextPlugin.extract('style-loader', 'css-loader?sourceMap&modules&importLoaders=1!postcss-loader')
            }
        ]
    },
    postcss: function() {
        return [precss, autoprefixer];
    },
    plugins: [
        // Set the name of the single CSS file here.
        new ExtractTextPlugin('main.css', { allChunks: true }),
        new webpack.HotModuleReplacementPlugin()
    ]
};

的index.html

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <link rel="stylesheet" type="text/css" href="/static/main.css" />
    </head>
    <body>
        <script src="http://localhost:9090/webpack-dev-server.js"></script>
        <script type="text/javascript" src="/static/bundle.js" charset="utf-8"></script>
    </body>
</html>

entry.js

require("./styles.css");
document.write(require("./content.js"));

styles.css的

@import "body.css";

body {
     /*background: yellow; */
    font-size: 30px;
}

div {
    display: flex;
}

body.css

$color: yellow;

body {
    background: $color;
}

div {
    color: white;

    a {
        color: green;
    }
}

div {
    display: flex;
}

Answer 1

经过互联网搜索后，可以在以下两个主题中找到答案：

https://github.com/postcss/postcss-loader/issues/8
https://github.com/jonathantneal/precss/issues/6

感谢@zzq889以下示例使用postcss-import来解决postcss-partial-import中的限制：

var postcssImport = require('postcss-import');

...

postcss: function (webpack) {
    return [
        postcssImport({
            addDependencyTo: webpack
        })
    ];
}

希望以后能够使用这个pull request或基于它的解决方案使用precss及其依赖库postcss-partial-import。

Webpack和Precss不会在@import文件更改时重新加载

1 个答案: