node-ssdp doesn't work with webpack - node.js

Question

I'm using node-ssdp to detect an IOT device connected to the network. Both server code and client code works fine with a sample node project. My client app is in angular-electron with webpack as the module bundler. I installed node-ssdp in the angular project with
npm install node-ssdp --save
node-ssdp gets installed successfully. But then webpack fails with following errors.
ERROR in ./~/node-ssdp/test/lib/server.js
Module not found: Error: Can't resolve 'chai' in 'J:\fyp\desktop-client\node_modules\node-ssdp\test\lib'
# ./~/node-ssdp/test/lib/server.js 3:13-28
# ./~/node-ssdp ^.*server$
# ./~/node-ssdp/index.js
# ./src/app/providers/pd.service.ts
# ./src/app/app.module.ts
# ./src/main.ts
# multi ./src/main.ts
ERROR in ./~/node-ssdp/test/lib/client.js
Module not found: Error: Can't resolve 'chai' in 'J:\fyp\desktop-client\node_modules\node-ssdp\test\lib'
# ./~/node-ssdp/test/lib/client.js 4:13-28
# ./~/node-ssdp ^.*client$
# ./~/node-ssdp/index.js
# ./src/app/providers/pd.service.ts
# ./src/app/app.module.ts
# ./src/main.ts
# multi ./src/main.ts
ERROR in ./~/node-ssdp/test/helper.js
Module not found: Error: Can't resolve 'sinon' in 'J:\fyp\desktop-client\node_modules\node-ssdp\test'
# ./~/node-ssdp/test/helper.js 1:12-28
# ./~/node-ssdp/test/lib/server.js
# ./~/node-ssdp ^.*server$
# ./~/node-ssdp/index.js
# ./src/app/providers/pd.service.ts
# ./src/app/app.module.ts
# ./src/main.ts
# multi ./src/main.ts
ERROR in ./~/node-ssdp/test/helper.js
Module not found: Error: Can't resolve 'dgram' in 'J:\fyp\desktop-client\node_modules\node-ssdp\test'
# ./~/node-ssdp/test/helper.js 3:12-28
# ./~/node-ssdp/test/lib/server.js
# ./~/node-ssdp ^.*server$
# ./~/node-ssdp/index.js
# ./src/app/providers/pd.service.ts
# ./src/app/app.module.ts
# ./src/main.ts
# multi ./src/main.ts
I tried installing the above missing chai, sinon, dgram dependencies manually.chai and sinon errors got eliminated but not dgram.
I did tried several times and wasted few hours on this. But I was not succeeded. Can anyone suggest a solution please?