installation

in a shell:

• npm i

launch the server

• npm run server

launch the client and see the issue

• In index.js, the 2nd http request should be commented

// ******  Should be commented at startup ********
//httpGetAsync('api/Home/action1?toto=boom', handler);

• start the client: in a shell: npm start
• navigate to http://localhost:1234 (the port is defined in devServer.js)
• In index.js, uncomment the line 11 //httpGetAsync('api/Home/action1?toto=boom', handler);
• auto-refresh... and boom! (authentication popup)