Sass postcss config 2020

package.json

{
    "name": "sass-postcss",
    "version": "1.0.0",
    "scripts": {
        "dev": "npm run compile -- --watch",
        "compile": "sass style.scss:build.css",
        "build": "npm run compile && postcss -u autoprefixer cssnano -r --map=false build.css"
    },
    "browserslist": [
        "> 5%",
        "last 2 versions",
        "not ie < 11",
        "not dead"
    ],
    "dependencies": {
        "autoprefixer": "^9.7.4",
        "cssnano": "^4.1.10",
        "postcss-cli": "^7.1.0",
        "sass": "^1.25.0"
    }
}