This is in your package.json. You should see a section called “scripts”.
Mine has the following in there:
“scripts”: {
“build”: “ionic-app-scripts build”,
“watch”: “ionic-app-scripts watch”,
“serve:before”: “watch”,
“emulate:before”: “watch”,
“deploy:before”: “build”,
“build:before”: “build”,
“run:before”: “watch”
}