Tengo un problema con el framework Laravel 8. Traté de instalar NPM para trabajar bajo el concepto de Laravel Mix. Mi problema es que CSS y JS no se compilan.

webpack.mix.js

 mix.js('resources/js/app.js', 'public/js') .postCss('resources/css/app.css', 'public/css', [ // ]) ;

paquete.json

 { "private": true, "scripts": { "dev": "npm run development", "development": "mix", "watch": "mix watch", "watch-poll": "mix watch -- --watch-options-poll=1000", "hot": "mix watch --hot", "prod": "npm run production", "production": "mix --production" }, "devDependencies": { "@popperjs/core": "^2.10.2", "axios": "^0.21", "bootstrap": "^5.1.3", "laravel-mix": "^6.0.6", "lodash": "^4.17.19", "postcss": "^8.1.14", "resolve-url-loader": "^3.1.4", "sass": "^1.43.4", "sass-loader": "^11.1.1" } }