Porting Javascript to Typescript
<p>I am trying to port a load of JS code I have inherited into Typescript. I have a file which is creating a module - <code>Bluetooth</code> - so goes through a whole load of functions adding them to the Bluetooth module, like this:</p>

<pre><code>Bluetooth.xzy = function() {
...}

//repeated various times

module.exports = Bluetooth;
</code></pre>

<p>However, just in the file, there is a structure like this, it is mostly extending other classes. What is going on, I haven't seen this ()(); structure before. I am turning Bluetooth into a class, wuld the contents of this function be in a constructor?</p>

<pre><code>(function () {
// Whole load of normal function logic
})();
</code></pre>