chore(): new plugin cleanup

src/plugins/appversion.ts

@@ -3,10 +3,10 @@ import {Plugin, Cordova} from './plugin';
 /**
  * Reads the version of your app from the target build settings.
  *
- * Requires Cordova plugin: cordova-plugin-appversion. For more info, please see the [cordova-plugin-version docs](ttps://github.com/whiteoctober/cordova-plugin-app-version).
+ * Requires Cordova plugin: `cordova-plugin-app-version`. For more info, please see the [Cordova App Version docs](ttps://github.com/whiteoctober/cordova-plugin-app-version).
  *
  * ```
- * ionic plugin add https://github.com/whiteoctober/cordova-plugin-app-version.git
+ * cordova plugin add cordova-plugin-app-version
  * ````
  *
  * @usage
@@ -18,41 +18,64 @@ import {Plugin, Cordova} from './plugin';
  * ```
  */
 @Plugin({
-  plugin: 'cordova-plugin-appversion',
+  plugin: 'cordova-plugin-app-version',
   pluginRef: 'cordova.getAppVersion'
 })
 export class AppVersion {
-
   /**
    * Returns the name of the app
+   * @returns {Promise}
    */
-  @Cordova
-  static getAppName () : string {
-    return;
+  @Cordova()
+  static getAppName () {
+    // This Promise is replaced by one from the @Cordova decorator that wraps
+    // the plugin's callbacks. We provide a dummy one here so TypeScript
+    // knows that the correct return type is Promise, because there's no way
+    // for it to know the return type from a decorator.
+    // See https://github.com/Microsoft/TypeScript/issues/4881
+    return new Promise<any>((res, rej) => {});
   }
 
   /**
    * Returns the package name of the app
+   * @returns {Promise}
    */
-  @Cordova
-  static getPackageName () : string {
-    return;
+  @Cordova()
+  static getPackageName () {
+    // This Promise is replaced by one from the @Cordova decorator that wraps
+    // the plugin's callbacks. We provide a dummy one here so TypeScript
+    // knows that the correct return type is Promise, because there's no way
+    // for it to know the return type from a decorator.
+    // See https://github.com/Microsoft/TypeScript/issues/4881
+    return new Promise<any>((res, rej) => {});
   }
 
   /**
    * Returns the build identifier of the app
+   * @returns {Promise}
    */
-  @Cordova
-  static getVersionCode () : string {
-    return;
+  @Cordova()
+  static getVersionCode () {
+    // This Promise is replaced by one from the @Cordova decorator that wraps
+    // the plugin's callbacks. We provide a dummy one here so TypeScript
+    // knows that the correct return type is Promise, because there's no way
+    // for it to know the return type from a decorator.
+    // See https://github.com/Microsoft/TypeScript/issues/4881
+    return new Promise<any>((res, rej) => {});
   }
 
   /**
    * Returns the version of the app
+   * @returns {Promise}
    */
-  @Cordova
-  static getVersionNumber () : string {
-    return;
+  @Cordova()
+  static getVersionNumber() {
+    // This Promise is replaced by one from the @Cordova decorator that wraps
+    // the plugin's callbacks. We provide a dummy one here so TypeScript
+    // knows that the correct return type is Promise, because there's no way
+    // for it to know the return type from a decorator.
+    // See https://github.com/Microsoft/TypeScript/issues/4881
+    return new Promise<any>((res, rej) => {});
   }
 
 }