Axis is great. It is less than 1K in size and simple to use. You just call `axis.isString('')` or `axis.isArray([])`. Todd provided `is` functions for all of the ES5 variable types. But after playing with Axis for a few minutes before I found a few bugs and realized that it didn't support ES6 types and I wanted, among other things, to know the type of a variable so I could use it in a switch statement. I liked what Todd had created but I wanted more.
So I created `xto` (Which stands for eXtended TypeOf). It does everything that Axis does but it fixed the few bugs related to `null` and `undefined` and added the features I needed.
With `xto` you can call `xto.isAtring(v)`, `xto.isMap(v)`, `xto.isPromise(v)`, etc. But you can also call `xto.typeof(v)` to get back the type of variable `v`. If you want to know the instance of an object you can call `xto.instance(v)` and if you want to know the entire instance hierarchy you can call `xto.instances(v)` which will return an array of instance strings.
I also added `xto.isAnyArray(v)` and `xto.isTypedArray(v)`. `xto.isAnyArray(v)` returns true if `v` is an `Array`, `Int16Array`, `Float64Array` or any other ES6 typed array. `xto.isTypedArray(v)` returns true is `v` is one of the ES6 typed arrays like `Int8Array`, `UInt32Array`, etc.
`xto` was written to use anywhere. You can `require` it in your Node.js code, `Import` it into Client-side JavaScript or just load it through a `<script>` tag. The minimized file is less than 2K in size. I have hand optimized the code to produce the smallest file possible.
If you need a better way to tell the typeof a JavaScript variable or the instance of a JavaScript object then `xto` is here to help.
