/**
 * @name App Availability
 * @description
 * This plugin allows you to check if an app is installed on the user's device. It requires an URI Scheme (e.g. twitter://) on iOS or a Package Name (e.g com.twitter.android) on Android.
 *
 * Requires Cordova plugin: cordova-plugin-appavailability. For more info, please see the [AppAvailability plugin docs](https://github.com/ohh2ahh/AppAvailability).
 *
 * @usage
 * ```typescript
 * import { AppAvailability, Device } from 'ionic-native';
 *
 *
 * let app;
 *
 * if (Device.platform === 'iOS') {
 *   app = 'twitter://';
 * } else if (Device.platform === 'Android') {
 *   app = 'com.twitter.android';
 * }
 *
 * AppAvailability.check(app)
 *   .then(
 *     (yes: string) => console.log(app + ' is available'),
 *     (no: string) => console.log(app + ' is NOT available')
 *   );
 * ```
 */
export declare class AppAvailability {
    /**
     * Checks if an app is available on device
     * @param {string} app Package name on android, or URI scheme on iOS
     * @returns {Promise<boolean>}
     */
    static check(app: string): Promise<boolean>;
}