Step $5$: Create a function with closure

Write a function outerFunction that declares a local variable and returns an inner function. The inner function should update the local variable each time it's called.

Hint:

Closures allow the inner function to remember the local variables of the outer function even after the outer function is done.

Snippet:

function outerFunction$()\{$ let count $=0$; return function$()\{//$ update count here $\}\}$