CanvasRenderingContext2D.setTransform() - Web APIs
the newer type consists of a single parameter, matrix, representing a 2d transformation matrix to set (technically, a dommatrixinit object; any object will do as long as it contains the above components as properties).

DOMMatrix - Web APIs
frommatrix() creates a new mutable dommatrix object given an existing matrix or a dommatrixinit dictionary which provides the values for its properties.

DOMMatrixReadOnly - Web APIs
frommatrix() creates a new mutable dommatrix object given an existing matrix or a dommatrixinit dictionary which provides the values for its properties.

DOMPointReadOnly - Web APIs
methods matrixtransform() applies a matrix transform specified as a dommatrixinit object to the dompointreadonly object.

Path2D.addPath() - Web APIs
(technically a dommatrixinit object).