How to get coverage with istanbul with only manual tests, only regression test manual, not autommated

[espeeche]

hi, please, any help will be really important to me. I have read a lot but i don´t know how to do it... in wich file write the "require("istanbul-middleware", so i am really a begginer.

Please, my javascript is ExtJs. And i want when the tester is doing the manual test, capture the coverage of javascript files. Please, provide me the steps with examples to really silly persons......

Thanks in advance.