Function isMachineRational

src/compute-engine/numerics/rationals.ts:13–17

(
  x: unknown | null
)

}

export function isMachineRational(
  x: unknown | null
): x is [SmallInteger, SmallInteger] {
  return x !== null && Array.isArray(x) && typeof x[0] === 'number';
}

export function isBigRational(x: unknown | null): x is [bigint, bigint] {
  return x !== null && Array.isArray(x) && typeof x[0] === 'bigint';