node.js + SOAP API integration

I am integrating a payment gateway called cashu.com. They use a SOAP-based API. There is only one call we want to use, DoPaymentRequest. This call generates a payment page. Test account details: CASHU: { merchant_id: 'soluki', encryptionkey: "ptidgxxesqu89zeh", }, Endpoint according to the documentation is [login to view URL] I am attaching the documentation. We use the enhanced encryption, see page number 15, its a simple md5 function we need to use. What I need is a node 9.2 compatible, Promise-ready NPM module that I can use to interact with the SOAP api so that in my code I can do the following: const CashU = require('cashu'); const input = { id: "myorderid", currency: "usd", amount: 12, language: "en", display_text: "Some product name", } [login to view URL](input).then(function(result) { }).catch(function(error) { });