reafactor: fix some error messages

Author: DimitarTachev

lib/commands/debug.ts

@@ -121,7 +121,7 @@ export class DebugPlatformCommand extends ValidatePlatformCommandBase implements
 		}
 
 		if (this.$options.hmr && this.$options.debugBrk) {
-			this.$errors.fail("Expected exactly one of the --debug-brk and --hmr options");
+			this.$errors.fail("--debug-brk and --hmr flags cannot be combined");
 		}
 
 		const minSupportedWebpackVersion = this.$options.hmr ? LiveSyncCommandHelper.MIN_SUPPORTED_WEBPACK_VERSION_WITH_HMR : null;

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

@@ -93,7 +93,7 @@ export class IOSDevice implements Mobile.IiOSDevice {
 		await this.$iOSSocketRequestExecutor.executeAttachRequest(this, constants.AWAIT_NOTIFICATION_TIMEOUT_SECONDS, appId);
 		const port = await this.$iOSDebuggerPortService.getPort({ projectDir, deviceId: this.deviceInfo.identifier, appId });
 		if (!port) {
-			this.$errors.fail("NativeScript debugger was not able to get inspector socket port.");
+			this.$errors.failWithoutHelp("Device socket port cannot be found.");
 		}
 
 		const deviceId = this.deviceInfo.identifier;

lib/common/mobile/ios/simulator/ios-simulator-device.ts

@@ -38,7 +38,7 @@ export class IOSSimulator implements Mobile.IiOSDevice {
 		await this.$iOSEmulatorServices.postDarwinNotification(attachRequestMessage, this.deviceInfo.identifier);
 		const port = await this.$iOSDebuggerPortService.getPort({ projectDir, deviceId: this.deviceInfo.identifier, appId });
 		if (!port) {
-			this.$errors.fail("NativeScript debugger was not able to get inspector socket port.");
+			this.$errors.failWithoutHelp("Device socket port cannot be found.");
 		}
 
 		try {