I have Brackets installed, and i getting ESLINT error, as far as i know i dont have ESLINT installed

That is the first time i get this error, my question is, how do i install ESLINT and configure it that i don't receive the errors. ( The JavaScript code is copied from CODEPEN so it should be ok)
The main problem is ESLINt, i tried with other JS plugins and get the same error, as i said its the first time im getting this error.