fix: remove persisted emulator's data on deviceLost event

lib/common/definitions/mobile.d.ts

@@ -730,6 +730,12 @@ declare module Mobile {
 		 * @returns {Promise<IStartEmulatorOutput>} Starts the emulator and returns the errors if some error occurs.
 		 */
 		startEmulator(options: Mobile.IStartEmulatorOptions): Promise<IStartEmulatorOutput>;
+
+		/**
+		 * Called when emulator is lost. Its purpose is to clean any resources used by the instance.
+		 * @returns {void}
+		 */
+		detach?(deviceInfo: Mobile.IDeviceInfo): void;
 	}
 
 	interface IStartEmulatorOutput {
@@ -772,6 +778,11 @@ declare module Mobile {
 		 * @param imageIdentifier - The imagerIdentifier of the emulator.
 		 */
 		startEmulatorArgs(imageIdentifier: string): string[];
+		/**
+		 * Called when emulator is lost. Its purpose is to clean any resources used by the instance.
+		 * @returns {void}
+		 */
+		detach?(deviceInfo: Mobile.IDeviceInfo): void;
 	}
 
 	interface IVirtualBoxService {

lib/common/mobile/android/android-device.ts

@@ -121,6 +121,12 @@ export class AndroidDevice implements Mobile.IAndroidDevice {
 		}
 	}
 
+	public detach(): void {
+		if (this.isEmulator) {
+			this.$androidEmulatorServices.detach(this.deviceInfo);
+		}
+	}
+
 	private async getDeviceDetails(shellCommandArgs: string[]): Promise<IAndroidDeviceDetails> {
 		const parsedDetails: any = {};
 

lib/common/mobile/android/android-emulator-services.ts

@@ -59,6 +59,10 @@ export class AndroidEmulatorServices implements Mobile.IEmulatorPlatformService
 		};
 	}
 
+	public detach(deviceInfo: Mobile.IDeviceInfo) {
+		this.$androidVirtualDeviceService.detach(deviceInfo);
+	}
+
 	private async startEmulatorCore(options: Mobile.IAndroidStartEmulatorOptions): Promise<{runningEmulator: Mobile.IDeviceInfo, errors: string[], endTimeEpoch: number}> {
 		const timeout = options.timeout || AndroidVirtualDevice.TIMEOUT_SECONDS;
 		const endTimeEpoch = getCurrentEpochTime() + this.$utils.getMilliSecondsTimeout(timeout);

lib/common/mobile/android/android-virtual-device-service.ts

@@ -142,6 +142,12 @@ export class AndroidVirtualDeviceService implements Mobile.IAndroidVirtualDevice
 		});
 	}
 
+	public detach(deviceInfo: Mobile.IDeviceInfo) {
+		if (this.mapEmulatorIdToImageIdentifier[deviceInfo.identifier]) {
+			delete this.mapEmulatorIdToImageIdentifier[deviceInfo.identifier];
+		}
+	}
+
 	private async getEmulatorImagesCore(): Promise<Mobile.IEmulatorImagesOutput> {
 		let result: ISpawnResult = null;
 		let devices: Mobile.IDeviceInfo[] = [];