webpack-dev-server hot reloved 未检测到 scss 中的变化

问题描述

我尝试用 node 和 webpack 做静态页面来热重定位和自动重新编译 scss。我想在每次更改 scss 文件后刷新项目，所以我需要 webpack-dev-server 来检测 scss 文件更改，重新编译 scss 并刷新页面。我在 HTML 中使用 cmd ().

我有两个问题。我使用 node-scss 重新编译它，但首先：

我需要从 webpack 运行：

node-sass --output-style 压缩 -o dist src/scss

在每次重新加载之前我尝试了 devServer.before，plugins.WebpackShellPluginNext - 但不是每次刷新都可以工作，只有当我启动 webpack 时

webpack 不会检测我的 scss 文件中的更改。我当然有 sass-loader，但它没有反应。

package.json

    {
  "name": "pluto","version": "1.0.0","description": "","main": "index.js","scripts": {
    "start": "webpack serve --mode development --env development --config webpack.config.js","css": "node-sass --output-style compressed -o dist src/scss"
  },"author": "","license": "ISC","devDependencies": {
    "autoprefixer": "^10.3.1","babel-core": "^6.26.3","babel-loader": "^8.2.2","babel-plugin-transform-runtime": "^6.23.0","babel-preset-es2015": "^6.24.1","css-loader": "^6.2.0","html-webpack-plugin": "^5.3.2","mini-css-extract-plugin": "^2.1.0","node-sass": "^6.0.1","postcss-cli": "^8.3.1","sass": "^1.36.0","sass-loader": "^12.1.0","style-loader": "^3.2.1","webpack": "^5.46.0","webpack-cli": "^4.7.2","webpack-dev-server": "^3.11.2"
  },"dependencies": {
    "babel-polyfill": "^6.26.0","babel-runtime": "^6.26.0","webpack-shell-plugin-next": "^2.2.2"
  }
}

webpack.config:

    const HtmlWebpackPlugin = require("html-webpack-plugin");
    const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const path = require("path");
const WebpackShellPluginNext = require('webpack-shell-plugin-next');
const spawn = require('child_process').spawn;

module.exports = {
  devServer: {
    hot: true,index: 'index.html'
  },entry: {
    app: "./src/index.js",},output: {
    path: path.resolve(__dirname,"dist"),filename: "bundle.js",module: {
    rules: [
      {
        test: /\.css$/,use: ["style-loader","css-loader","postcss-loader"],{
                test: /\.scss$/,use: [MiniCssExtractPlugin.loader,'style-loader',"sass-loader"]
      },],plugins: [
    new WebpackShellPluginNext({
      onBuildStart:{
        scripts: ['node-sass --output-style compressed -o dist src/scss'],blocking: true,parallel: false
      },onBuildEnd:{
        scripts: ['echo "Webpack End"'],blocking: false,parallel: true
      }
    }),new HtmlWebpackPlugin({ filename: "index.html",template: "index.html" }),new MiniCssExtractPlugin({
      filename: "[name].css",chunkFilename: "[id].css",}),};

也许你知道如何解决它或者做得更好/更容易？

解决方法

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