Pre-increment by more than 1 (JavaScript)

Is there a version of the += operator that pre-increments?

I understand pre- and post- increment in JS (i++ and ++i), and I also am aware of i += n if I want to increment by n, but to my understanding the += operator is a post-increment. If I want to do an inline pre-increment by more than 1, which operator would I use? Is this possible?

Currently, my approach is to simply increment the variable on another line, but doing this inline would be nice!