在mac系统下为啥文件变动使用watch命令不生效？webpack --config webpack.config.prod.js --watch --mode productionwebpack.config.prod.js也非常简单const path = require('path');const MiniCssExtractPlugin = require('mini-css-extract-plugin');const ManifestPlugin = require('webpack-manifest-plugin');module.exports = { entry: './src/index.js', output: { filename: 'main.js', publicPath: '', path: path.resolve(__dirname, 'build') }, devtool: 'source-map', watchOptions: { ignored: /node_modules/ }, module: { rules: [ { test: /\.(js|jsx)$/, exclude: /node_modules/, use: { loader: 'babel-loader' } }, { test: /\.(sa|sc|c)ss$/, use: [ { loader: MiniCssExtractPlugin.loader, options: { hmr: process.env.NODE_ENV === 'development' } }, 'css-loader', // translates CSS into CommonJS 'sass-loader' // compiles Sass to CSS, using Node Sass by default ] } ] }, plugins: [ new MiniCssExtractPlugin({ filename: '[name].css', chunkFilename: '[id].css' }), new ManifestPlugin() ]};