为什么我的 webpack laravel.mix 会在 10-20 秒内编译我的文件？

再会。开始在项目中使用 laravel.mix，但在 10 多秒内就遇到了编译墙><

如何让 laravel.mix 在一秒钟内编译我的源代码？

我的 webpack.mix.js：

let mix = require('laravel-mix');

mix.autoload({
  jquery: ['$', 'window.jQuery']
});
mix.setPublicPath('./')
    .sass('src/scss/main.scss', 'dist/css')
    .sourceMaps()
    .js('src/js/main.js', 'dist/js')
    .extract(['bootstrap', 'popper.js', 'jquery' ]);

mix.browserSync({
  proxy: 'laravel.mix.li-lit'
});

我的 package.json：

{
    "private": true,
    "scripts": {
        "dev": "npm run development",
        "development": "cross-env NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
        "watch": "npm run development -- --watch",
        "watch-poll": "npm run watch -- --watch-poll",
        "hot": "cross-env NODE_ENV=development node_modules/webpack-dev-server/bin/webpack-dev-server.js --inline --hot --config=node_modules/laravel-mix/setup/webpack.config.js",
        "prod": "npm run production",
        "production": "cross-env NODE_ENV=production node_modules/webpack/bin/webpack.js --no-progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
    },
    "browserslist": [
        "> 1%",
        "last 3 version"
    ],
    "devDependencies": {
        "browser-sync": "^2.26.3",
        "browser-sync-webpack-plugin": "^2.2.2",
        "cross-env": "^5.2.0",
        "css-mqpacker": "^7.0.0",
        "cssnano": "^4.1.8",
        "laravel-mix": "^4.0.14",
        "resolve-url-loader": "^2.3.1",
        "sass": "^1.16.1",
        "sass-loader": "^7.1.0",
        "vue-template-compiler": "^2.5.22"
    },
    "dependencies": {
        "bootstrap": "^4.2.1",
        "inputmask": "^4.0.6",
        "jquery": "^3.3.1",
        "popper.js": "^1.14.6",
        "swiper": "^4.4.6",
        "wowjs": "^1.1.3"
    }
}

这是我的 webpack 在 scss 编译开始时所说的（只是更改了背景并删除了）：

这是他在编译更改时所说的：