Accessing functions and variables from HTML

[kanatkubash]

It seems all typescript code are wrapped in a function and called and this leads to function declarations not to be globally available. How can I declare functions in typescript file globally?
For example :

index.ts
function handleClick(){ }
index.html
<div onclick="handleClick()"></div>

Here handleClick is not found, because it is wrapped in an outer function before calling

[kanatkubash]

I figured one way of doing this would be :

Object.assign(window, { yourFunctionOne, yourFunctionTwo })