In the past i always read that javascript debug is a nighmare and never goes to javascript because i don't want to add  code in the source to read the values of variables .

I think with sourcemap  inspect variable , go to line error  must be easier  ?

I wanted to test sourcemap with last version  of phpstorm and a  short javascript  code to understand how it work so i ask question before spend some time on debug .

I don't want to deal with problem version so search a tutorial that explicit speak about javascript  and no pre processor  language , pre compiler .

I focus on find detect  errors/bug  ( line number and file name )  easely when i use javascript  with js  framework .

since specification of css and html is not the same beetween broswer  , i think there must be many difference beetween, all ther javascript engine implementation in broswers , i don't know if  debug can  support many broswer ( embedding javascript runtime )  or this question is a non sense ?

Thank's for any help .