Magento 2 implements Swagger providing a JSON Schema of the REST endpoints, this package compiles the JSON into classes and methods using templates (see inside the templates/
directory) for consuming the API in a NodeJS applicaton.
npm install magento2-swagger --save
A full specification of all the endpoints in this packages can be found in the Magento 2 Dev Docs
var magentoSwagger = require('magento2-swagger').Magento;
var magento = new magentoSwagger('http://www.example.com/rest');
magento.catalogCategoryManagementV1GetTreeGet().done(function (response) {
console.log(response.body);
});