By using node sdk , file is uploaded and then after uploading file ,  I would like to get that uploaded file id. File is uploaded successfully response code s200. Althought I try out , I cannot get that uploaded file id. I cannot understand how can I get data from return Promise<Object> data type.
Therefore, could you support and find out solution for that issue. My code snippest is as below.
 

 // Initialize the Box SDK

              var sdk = new BoxSDK({

                clientID: sdkConfig.clientID,

                clientSecret: sdkConfig.clientSecret,

                appAuth: {

                    keyID: sdkConfig.appAuth.keyID,

                    privateKey: sdkConfig.appAuth.privateKey,

                    passphrase: sdkConfig.appAuth.passphrase

                }

            });

 

             var appUserClient = sdk.getAppAuthClient('user',userId);

              var stream =fs.createReadStream(newPath); // upload file’s path

              var parentFolderId = parentFolderId

              var fileName = files.uploadÂ0].originalFilename; // upload file’s name

 

             // File is uploaded

          var response =  appUserClient.files.uploadFile(parentFolderId,fileName,stream);

            // want to accept uploaded file’s id that step ※