babelrc

{
	"presets": [
		"@babel/preset-env",
		"@babel/preset-typescript"
	],
	"env": {
		"test": {
			"plugins": [
				"@babel/plugin-proposal-decorators"
			]
		}
	}
}

package.json

{
  "name": "myapp",
  "version": "0.0.1",
  "author": "Ionic Framework",
  "homepage": "http://ionicframework.com/",
  "private": true,
  "scripts": {
    "clean": "ionic-app-scripts clean",
    "build": "ionic-app-scripts build",
    "lint": "ionic-app-scripts lint",
    "ionic:build": "ionic-app-scripts build",
    "ionic:serve": "ionic-app-scripts serve",
    "test": "jest --no-cache"
  },
  "jest": {
    "verbose": true,
    "globals": {
      "ts-jest-babel-7": {
        "useBabelrc": true
      }
    },
    "transform": {
      "^.+\\.(j|t)sx?$": "ts-jest-babel-7"
    },
    "testRegex": "(/__tests__/.*|\\.(test|spec))\\.(ts|tsx|js)$",
    "moduleFileExtensions": [
      "ts",
      "tsx",
      "js",
      "json"
    ],
    "testPathIgnorePatterns": [
      "/node_modules/",
      "plugins",
      "platforms"
    ]
  },
  "dependencies": {
    "@angular/common": "^5.2.5",
    "@angular/compiler": "^5.2.5",
    "@angular/compiler-cli": "^5.2.5",
    "@angular/core": "^5.2.5",
    "@angular/forms": "^5.2.5",
    "@angular/http": "^5.2.5",
    "@angular/platform-browser": "^5.2.5",
    "@angular/platform-browser-dynamic": "^5.2.5",
    "@ionic-native/barcode-scanner": "^4.4.3",
    "@ionic-native/call-number": "^4.5.3",
    "@ionic-native/camera": "^4.4.3",
    "@ionic-native/core": "^4.5.3",
    "@ionic-native/device": "^4.4.3",
    "@ionic-native/file": "^4.5.3",
    "@ionic-native/file-transfer": "^4.5.3",
    "@ionic-native/flashlight": "^4.5.3",
    "@ionic-native/launch-navigator": "^4.5.3",
    "@ionic-native/qr-scanner": "^4.5.3",
    "@ionic-native/splash-screen": "4.5.3",
    "@ionic-native/status-bar": "4.5.3",
    "@ionic-native/web-intent": "^4.5.3",
    "@ionic/storage": "^2.1.3",
    "@ngx-translate/core": "^9.0.2",
    "@ngx-translate/http-loader": "^2.0.1",
    "call-number": "^1.0.1",
    "com-darryncampbell-cordova-plugin-intent": "0.0.19",
    "cordova-android": "7.1.0",
    "cordova-browser": "5.0.3",
    "cordova-common": "^2.2.0",
    "cordova-ios": "4.5.4",
    "cordova-plugin-actionsheet": "^2.3.3",
    "cordova-plugin-camera": "^4.0.2",
    "cordova-plugin-compat": "^1.2.0",
    "cordova-plugin-device": "^2.0.1",
    "cordova-plugin-dialogs": "^2.0.1",
    "cordova-plugin-file": "^6.0.1",
    "cordova-plugin-file-transfer": "^1.7.1",
    "cordova-plugin-flashlight": "^3.2.0",
    "cordova-plugin-ionic-webview": "^1.1.16",
    "cordova-plugin-splashscreen": "^5.0.2",
    "cordova-plugin-whitelist": "^1.3.3",
    "cordova-serve": "^2.0.0",
    "cordova-sqlite-storage": "^2.2.1",
    "ionic-angular": "^3.9.2",
    "ionic-plugin-keyboard": "^2.2.1",
    "ionicons": "3.0.0",
    "jest-zone-patch": "0.0.8",
    "moment": "2.20.1",
    "moment-timezone": "^0.5.14",
    "mx.ferreyra.callnumber": "~0.0.2",
    "ng-socket-io": "^0.2.4",
    "ng2-file-upload": "^1.3.0",
    "phonegap-plugin-barcodescanner": "^7.1.0",
    "properties-parser": "0.3.1",
    "q": "1.5.1",
    "rxjs": "5.5.6",
    "sw-toolbox": "3.6.0",
    "uk.co.workingedge.phonegap.plugin.launchnavigator": "^4.1.5",
    "xcode": "^1.0.0",
    "zone.js": "0.8.20"
  },
  "devDependencies": {
    "@babel/core": "^7.0.0-beta.42",
    "@babel/plugin-proposal-decorators": "^7.0.0-beta.42",
    "@babel/preset-env": "^7.0.0-beta.42",
    "@babel/preset-typescript": "^7.0.0-beta.42",
    "@ionic/app-scripts": "3.1.8",
    "@types/jest": "^22.2.0",
    "babel-core": "^7.0.0-bridge.0",
    "babel-jest": "^22.4.3",
    "babel-plugin-transform-es2015-modules-commonjs": "^6.26.0",
    "jest": "^22.4.3",
    "ts-jest-babel-7": "^22.0.7",
    "typescript": "2.7.1"
  },
  "description": "An Ionic project",
  "cordova": {
    "plugins": {
      "cordova-plugin-camera": {},
      "uk.co.workingedge.phonegap.plugin.launchnavigator": {
        "LOCATION_USAGE_DESCRIPTION": "This app requires access to your location for navigation purposes"
      },
      "cordova-plugin-device": {},
      "cordova-plugin-ionic-webview": {},
      "cordova-plugin-splashscreen": {},
      "cordova-plugin-whitelist": {},
      "ionic-plugin-keyboard": {},
      "phonegap-plugin-barcodescanner": {},
      "cordova-plugin-flashlight": {},
      "cordova-plugin-compat": {},
      "cordova-plugin-file": {},
      "cordova-plugin-file-transfer": {},
      "cordova-sqlite-storage": {},
      "com-darryncampbell-cordova-plugin-intent": {}
    },
    "platforms": [
      "android",
      "browser",
      "ios"
    ]
  }
}