xml-http-promise

Instrumentation retrofitting an XMLHttpRequest like interface on Promises

A non-serious experiment giving arbitrary (non http transfer related) promises interfaces that looked alike XMLHttpRqeuest. Where-as modern JavaScript like Fetch fully close over the http transferring process, old Object-Oriented design favored creating a a model for the http-transfer and creating an operational interface/controls on that model. This library explores, what if we tried modelling our asynchronous processes our. In this case, it does so by creating an XMLHttpRequest like interface atop existing Promise functions.

Some of the noted controls on the XHR object:

1. You can watch the xhr object advance, by checking it's readyState or via onreadystatechange. i. the onreadystatechange handler gets a reference to the xhr object.
2. response is synchronously available on the xhr object.
3. status says whether the xhr suceeded.
4. timeout behavior provided

All in all, this is a much more information-rich environment than EcmaScript Promises.