```
/*
Problem statement and Explanation : https://en.wikipedia.org/wiki/Coprime_integers
In number theory, two integers a and b are coprime, relatively prime or
mutually prime if the only positive integer that is a divisor of both
of them is Consequently, any prime number that divides one of a
or b does not divide the other. This is equivalent to their greatest
common divisor (gcd) being. One says also a is prime to b or a
is coprime with b.
*/
// Here we use a GetEuclidGCD method as a utility.
const GetEuclidGCD = (arg1, arg2) => {
let less = arg1 > arg2 ? arg2 : arg1
for (less; less >= 2; less--) {
if ((arg1 % less === 0) && (arg2 % less === 0)) return (less)
}
return (less)
}
// CoPrimeCheck function return the boolean in respect of the given number is co-prime or not.
/**
* CoPrimeCheck function return the boolean in respect of the given number is co-prime or not.
* @param {Number} firstNumber first number for checking is prime or not.
* @param {Number} secondNumber second number for checking is prime or not.
* @returns return correspond boolean value, if both number are co-prime return `true`, else return `false`.
*/
const CoPrimeCheck = (firstNumber, secondNumber) => {
// firstly, check that input is a number or not.
if (typeof firstNumber !== 'number' || typeof secondNumber !== 'number') {
return new TypeError('Argument is not a number.')
}
/*
This is the most efficient algorithm for checking co-primes
if the GCD of both the numbers is 1 that means they are co-primes.
*/
return GetEuclidGCD(firstNumber, secondNumber) === 1
}
export { CoPrimeCheck }
```

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