fraction methods are not typed

[yukulele]

Describe the bug
Fraction type only exposes s, n add d properties

mathjs/types/index.d.ts:4018:

export interface Fraction {
  s: number
  n: number
  d: number
}

so we can't use methods

To Reproduce

math.fraction('1.5').toFraction() // "3/2"

> tsc
error TS2339: Property 'toFraction' does not exist on type 'Fraction'.

9 math.fraction('1.5').toFraction()
                       ~~~~~~~~~~

[josdejong]

Thanks for reporting, we should improve the TypeScript definitions. Ideally, we can import and use type definitions from Fraction.js.

Who can help fix the TypeScript definitions of fractions?

[yukulele]

I think you might need to update the fraction.js version first, which is out outdated.

[josdejong]

Yes, that is addressed via #3283, it is a breaking change planned for v14.

[josdejong]

Fixed now in v14.0.1.