Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)
Simple set of functions to check variables. Includes check of undefined / defined / defined and not null / defined and not empty / is number / is function is object
Check your types at runtime with ESNext syntax by meta programing in node.js and browser with interfaces, types, strict object and more.
provides helpers to check if argument type is object, array, function