I have an error that I have not yet been able to solve, and it is in Brackets. The problem is with JavaScript, Brackets marks me errors as in the object "document" or other objects that are of JS as it also marks me error in "alert". I recently started learning about JavaScript and I do not know what this error could be. I'm thinking that maybe I'm missing some plugin in Brackets or imoportar some libraries, but I think it is not necessary to import libraries. Something I must say, is that the script in the browser works correctly, the error is only in Brackets.
I would greatly appreciate the help!
Greetings. 