Example

var {
isNumber,
isEven,
isOdd
parseInt,
parseFloat,
isPrime,
} = require("./index");

isNumber(value)

isNumber(10); -> true
isNumber("10"); -> true
isNumber(""); -> false
isNumber(undefined); -> false
isNumber(null); -> false
isNumber("abc"); -> false

isEven(value)

isEven(10); -> true
isEven(9); -> false
isEven("a12"); -> false;
isEven(undefined); -> false;
isEven(null); -> false;

isOdd(value)

isOdd(10); -> false
isOdd(9); -> true
isOdd("abc"); -> false;
isOdd(undefined); -> false;
isOdd(null); -> false;

parseInt(value),

parseInt("10.7"); -> 10
parseInt("1a"); -> throw "Input parameter is not a number!";

parseFloat(value)

parseFloat("10.7"); -> 10.7
parseFloat("a"); -> throw "Input parameter is not a number!";

isPrime(number)

isPrime(10); -> false
isPrime(7); -> true
isPrime("A"); -> false
isPrime(undefined); -> false