utils.js

//utils.js
// Controls a standard Web API use case
// It includes the getReqData() function
// which retrieves data from the client on the server

function getReqData(req) {
    return new Promise((resolve, reject) => {
        try {
            let body = "";
            // listen to data sent by client
            req.on("data", (chunk) => {
                // append the string version to the body
                body += chunk.toString();
            });
            // listen till the end
            req.on("end", () => {
                // send back the data
                resolve(body);
            });
        } catch (error) {
            reject(error);
        }
    });
}

// since only one function don't need to export entire file
module.exports = { getReqData };