Comments or is something already being worked on ?
There are already 2 such classes: SVGMatrix and CSSMatrix. The former is an affine transformation
matrix (commonly misnamed a "2x3 matrix") and the latter is a 3D homogeneous
transformation matrix (commonly correctly named a "4x4 matrix").
Are those classes in their current implementations thread-safe ? Could a Web
Worker easily do matrix calculations with them ? I would guess a basic physics
engine in a worker would be a nice use case.
And what about making something that is generic enough for both SVG and CSS, or
even full blown algebra ? And then specify bindings of implicit conversions
from those DOM classes into a basic ES matrix (if you would like to call it
that) ?