Installing

To utilize unirest for node.js install the the npm module:

$ npm install unirest

After installing the npm package you can now start simplifying requests like so:

var unirest = require('unirest');

Creating Request

unirest.post("https://SquareECommerceserg.osipchukV1.p.rapidapi.com/captureSingleTransaction")
.header("X-RapidAPI-Key", "undefined")
.header("Content-Type", "application/x-www-form-urlencoded")
.end(function (result) {
  console.log(result.status, result.headers, result.body);
});