text: "use strict";
  let is = module.exports;
  
  is.isString = unknown => {
  	return typeof unknown === "string" ? true : false;
  };
  is.isFunction = unknown => {
  	return typeof unknown === "function" ? true : false;
  };
  is.isBoolean = unknown => {
  	return typeof unknown === "boolean" ? true : false;
  };
  is.isNumber = unknown => {
  	return typeof unknown === "number" ? true : false;
  };
  is.isObject = unknown => {
  	return typeof unknown === "object" ? true : false;
  };
  is.isUndefined = unknown => {
  	return typeof unknown === "undefined" ? true : false;
  };
  is.isArray = unknown => {
  	return Array.isArray(unknown) ? true : false;
  };
  