It would be great to have a way to do vector operations without allocating more memory.
It's very common when doing graphical programming to have lines like:

vector(x,y).sub(...).normalize().mulitply(...)

It would be great to be able to write this more performantly as:

vector(x,y).subMut(...).normalizeMut().mulitplyMut(...)

Approach 1

Name the mutable methods in the same way as the rest of the lib: .subMut or .subtractMut, addMut

Approach 2

Matter.js takes in as input an output vector to assign the result.
https://brm.io/matter-js/docs/classes/Vector.html

Currently, Vector methods like .add and .subtract take as input, a vector object. This means that one may be forced to create a new Vector object unnecessarily. It would be great to have a method that takes in x and y scalars directly to improve memory performance.

Reversed clockwise direction to match screen coordinates.