Example that shows how you can easily integrate node-sync to your app without refactoring

sync_integration.js

someObject = {

	myNewMethod : function(a, b) // <-- no callback
	{
		console.log(Fiber.current); // Inside of fiber
		
		if (a == 1)
		    throw "'a' cannot be 1"; // we can use throw here
		
		return a + b; // the result as regular 'return' value
		
	}.async(), // <-- make it friendly with async environment
	
	myOtherNewMethod : function()
	{
	    console.log(Fiber.current); // Inside of fiber
	    
	    // we can use myNewMethod synchronously from here
	    var result = this.myNewMethod(2, 2);
	    console.log(result); // 4
	    
	    // it will throw exceptions right here
	    try {
	        var result = this.myNewMethod(1, 2);
	    }
	    catch (e) {
	        console.log(e); // 'a' cannot be 1
	    }
	    
	}.async()
}

// My asynchronously app which doesn't know anything about fibers
MyApp(function(){
    
    // So, we can use myNewMethod as a regular asynchronous function
    someObject.myNewMethod(2, 2, function(err, result){
        console.log(result); // 4
    })
    // Errors as it should be
    someObject.myNewMethod(1, 2, function(err, result){
        console.log(err); // 'a' cannot be 1
    })
    
})