The math.parse feature is very helpful in converting a math expression or a matrix into TeX.
I have one suggestion and one doubt regarding this feature.

Scenario: I want to perform some math operation and display the output in TeX.

let a = math.matrix([1,2,3,4]);
let b = math.divide(a,0);
let c = b.toString();
let d = math.parse(c);
let texOut = d.toTex();

Suggestion:
The output is "\begin{bmatrix}Infinity\\Infinity\\Infinity\\Infinity\\\end{bmatrix}". However replacing Infinity with \infty is more appropriate.

Doubt:
Also, I am not sure if I am correctly using the last step. Because: math variable b is converted to string and then math.parse is applied. Is there any command to obtain TeX directly from b instead of converting it into a string and then back into a math.js object?

PS: In the math.js example here.

1. If we place Infinity in the Expression, we get:
   
2. If we place Inf in the Expression, we get:
   

So, I think math.evaluate and math.parse part their ways here in understanding the input string.

Thank you.