Example of npm script commands used in an Ionic project.

package.json

    "scripts": {
        "clean": "ionic-app-scripts clean",
        "build": "npm run ionic:build",
        "start": "concurrently \"npm run build:watch\" \"npm run serve\"",
        "serve": "lite-server -c=bs-config.json",
        "ionic:build": "gulp default && npm run lint && ionic-app-scripts build",
        "ionic:serve": "gulp default && npm run lint && ionic-app-scripts serve --sourceMap source-map --iscordovaserve --wwwDir platforms/browser/www/ --buildDir platforms/browser/www/build",
        "build-prod-browser": "gulp browser && ionic-app-scripts build browser --wwwDir platforms/browser/www --sourceMap source-map",
        "build-dev-browser": "gulp browser && ionic-app-scripts build browser --wwwDir platforms/browser/www --sourceMap source-map --dev",
        "build-dev-android": "gulp default && cordova build android --debug",
        "build-prod-android": "gulp default && cordova build android --release",
        "build-dev-ios": "gulp default && cordova build ios --debug",
        "build-prod-ios": "gulp default && cordova build ios --release",
        "watch": "gulp default && ionic-app-scripts watch --sourceMap source-map",
        "test": "karma start ./test-config/karma.conf.js --single-run || true",
        "test:watch": "karma start ./test-config/karma.conf.js || true",
        "test:coverage": "karma start ./test-config/karma.conf.js --coverage --single-run || true",
        "test:coverage:watch": "karma start ./test-config/karma.conf.js --coverage || true",
        "lint": "tsfmt -r && tslint -p tsconfig-lint.json"