A new compiler lets programmers use their C# skills to build JavaScript and HTML5 Web applications. By integrating with Microsoft’s Visual Studio IDE and leveraging Microsoft’s Roslyn compiler ...

The new JavaScript compiler made its debut in the nightly releases of Firefox 18 in September, but the project had already been underway for a good year at that point.

If a JavaScript function is called more than six times, or loops more than 100 times, it gets fed into the next stage: a basic JIT compiler that produces executable code.