robb (npm): Simple type checker in JavaScript.
Keywords: utils|util|type checking|type checker|type|checker|isAlpha|isAlphanumeric|isArguments|isArray|isBoolean|isDate|isDecimal|isDefined|isElement|isEmail|isEmpty|isEven|isFinite|isFunction|isInt|isIp|isIpv4|isIpv6|isLowercase|isNaN|isNegative|isNull|isNumber|isObject|isOdd|isPercentage|isPort|isPositive|isPrime|isRegExp|isString|isUndefined|isUnsignedInt|isUppercase|isUrl|isWindow