Laravel Mix - How to watch multiple entry points for changes

I've split frontend and admin webpack.mix files like so:

webpack.mix.js:

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

if (process.env.section) {
    require(`${__dirname}/webpack.mix.${process.env.section}.js`);
}

Then a seperare webpack.mix.admin.js and webpack.mix.website.js file for controlling the mix with the following in package.json:

  "scripts": {
    "dev": "npm run development",
    "development": "cross-env process.env.section=website NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
    "watch": "cross-env process.env.section=website NODE_ENV=development node_modules/webpack/bin/webpack.js --watch --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
    "watch-poll": "npm run watch -- --watch-poll",
    "hot": "cross-env process.env.section=website 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 process.env.section=website NODE_ENV=production node_modules/webpack/bin/webpack.js --no-progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
    "admin-dev": "npm run admin-development",
    "admin-development": "cross-env process.env.section=admin NODE_ENV=development node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
    "admin-watch": "cross-env process.env.section=admin NODE_ENV=development node_modules/webpack/bin/webpack.js --watch --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
    "admin-watch-poll": "npm run admin-watch -- --watch-poll",
    "admin-hot": "cross-env process.env.section=admin NODE_ENV=development node_modules/webpack-dev-server/bin/webpack-dev-server.js --inline --hot --config=node_modules/laravel-mix/setup/webpack.config.js",
    "admin-prod": "npm run admin-production",
    "admin-production": "cross-env process.env.section=admin NODE_ENV=production node_modules/webpack/bin/webpack.js --no-progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
  },

It's all running well but I can only run npm run watch on the frontend when ideally I want to watch both frontend and admin files for changes.

I've tried npm run watch & npm run admin-watch but the latter is ignored

At the moment I am watching the frontend files and running npm run admin-prod as and when required but this has started to get a little frustrating

via Chebli Mohamed