NativeScript - Write Native with TypeScript

const formatMessage = (level: number) =>
  `The battery level is ${level}%`;

// iOS
const value = UIDevice.currentDevice.batteryLevel * 100;

// Android
const value = bm.getIntProperty(
  BatteryManager.BATTERY_PROPERTY_CAPACITY
);

alert(formatMessage(value));

Native development for everyone

NativeScript lets you build fully native apps without sacrificing user experience, using a shared set of components that map directly to each platform's native UI building blocks.