extract method

src/vs/code/electron-main/main.ts

@@ -106,11 +106,13 @@ function main(accessor: ServicesAccessor, mainIpcServer: Server, userEnv: platfo
 
 	// Setup Windows mutex
 	let windowsMutex: Mutex = null;
-	try {
-		const Mutex = (<any>require.__$__nodeRequire('windows-mutex')).Mutex;
-		windowsMutex = new Mutex(product.win32MutexName);
-	} catch (e) {
-		// noop
+	if (platform.isWindows) {
+		try {
+			const Mutex = (<any>require.__$__nodeRequire('windows-mutex')).Mutex;
+			windowsMutex = new Mutex(product.win32MutexName);
+		} catch (e) {
+			// noop
+		}
 	}
 
 	// Register Main IPC services
@@ -265,6 +267,25 @@ function setupIPC(accessor: ServicesAccessor): TPromise<Server> {
 	const logService = accessor.get(ILogService);
 	const environmentService = accessor.get(IEnvironmentService);
 
+	function allowSetForegroundWindow(service: LaunchChannelClient): TPromise<void> {
+		let promise = TPromise.as(null);
+		if (platform.isWindows) {
+			promise = service.getMainProcessId()
+				.then(processId => {
+					logService.log('Sending some foreground love to the running instance:', processId);
+					
+					try {
+						const { allowSetForegroundWindow } = <any>require.__$__nodeRequire('windows-foreground-love');
+						allowSetForegroundWindow(processId);
+					} catch (e) {
+						// noop
+					}
+				});
+		}
+
+		return promise;
+	}
+
 	function setup(retry: boolean): TPromise<Server> {
 		return serve(environmentService.mainIPCHandle).then(server => {
 			if (platform.isMacintosh) {
@@ -299,21 +320,7 @@ function setupIPC(accessor: ServicesAccessor): TPromise<Server> {
 					const channel = client.getChannel<ILaunchChannel>('launch');
 					const service = new LaunchChannelClient(channel);
 
-					let promise = TPromise.as(null);
-					if (platform.isWindows) {
-						promise = service.getMainProcessId()
-							.then(processId => {
-								logService.log('Sending some foreground love to the running instance:', processId);
-								try {
-									const { allowSetForegroundWindow } = <any>require.__$__nodeRequire('windows-foreground-love');
-									allowSetForegroundWindow(processId);
-								} catch (e) {
-									// noop
-								}
-							});
-					}
-
-					return promise
+					return allowSetForegroundWindow(service)
 						.then(() => service.start(environmentService.args, process.env))
 						.then(() => client.dispose())
 						.then(() => TPromise.wrapError('Sent env to running instance. Terminating...'));