JavaScriptServices/samples/misc/ES2015Transpilation/Controllers/ScriptController.cs

using System.Threading.Tasks;
using Microsoft.AspNet.Mvc;
using Microsoft.AspNet.NodeServices;

namespace ES2015Example.Controllers
{
    public class ScriptController : Controller
    {
        private static NodeInstance nodeInstance = new NodeInstance(); 
        
        public async Task<ContentResult> Transpile(string filename)
        {
            // TODO: Don't hard-code wwwroot; use proper path conversions
            var fileContents = System.IO.File.ReadAllText("wwwroot/" + filename);
            var transpiledResult = await nodeInstance.Invoke("transpilation.js", fileContents);
            return Content(transpiledResult, "application/javascript");
        }
    }
}