Typescript signatures for add, multiply are incorrect

[dmyronuk]

Describe the bug
From the docs

Add two or more values, x + y. For matrices, the function is evaluated element wise... math.add(x, y, z, ...)

But the function takes exactly 2 arguments according to TS definition:

mathjs/types/index.d.ts

Line 1038 in 02f195f

add<T extends MathType>(x: T, y: T): T

Same issue affects multiply

To Reproduce
const x = math.add(1, 2, 3);
Transpiler error: Expected 2 arguments, but got 3.

If you suppress the error with @ts-ignore the function works as expected.

[josdejong]

Thanks for reporting, will be fixed via 2e427ec (not yet published).

[josdejong]

Fix published now in v12.4.2