SpQL is an easier way of querying SharePoint's web services. It abstracts away a lot the complexity and redundancy of constructing SOAP requests into an easy to use API.
Using npm:
$ npm i spql
import spql from "spql";
The UMD build is also available on unpkg:
<script src="https://unpkg.com/spql@1/dist/spql.min.js"></script>
You can find the library on window.spql
.