Laravel 5.4: Webpack: Custom SSL Certificate and Key for Browsersync Laravel Mix

webpack.mix.js

const { mix } = require('laravel-mix');

/*
 |--------------------------------------------------------------------------
 | Mix Asset Management
 |--------------------------------------------------------------------------
 |
 | Mix provides a clean, fluent API for defining some Webpack build steps
 | for your Laravel application. By default, we are compiling the Sass
 | file for the application as well as bundling up all the JS files.
 |
 */


mix.js('resources/assets/js/app.js', 'public/js')
   .sass('resources/assets/sass/app.scss', 'public/css');

mix.browserSync({
    proxy: 'https://example.app',
    host: 'example.app',
    https: {
        key: "/Users/user/.valet/Certificates/example.app.key",
        cert: "/Users/user/.valet/Certificates/example.app.crt"
    },
    open: 'external',
});