I've found on StackOverflow an old answer written by me, in which I've used the first form.
Reading it now, it sounds weird and wrong;
I am inclined to think that the second form is the only one correct,
"preventing it to" and
"preventing it from" there are 300.000+ results for the first and 700.000+ results for the second!
The 300k+ results for the first form seem way too much for a completely wrong form, hence I've decided to ask here.
EDIT: The original sentence is:
white-space: nowrap;to your
This will do exactly what you need, preventing divs to wrap.