Hm. That’s a bit confusing because the question looked and sounded like you’re a new user. But apparently you used ST3 before and ST4 “inherits” or uses these settings.
However, you said eslint is working on some projects, or for some directories. You just need to figure out which settings/folders Sublime Text picks up. And Sublime Text will print that to the console on startup. It prints all the relevant paths it uses.
I just checked that SublimeLinter actually watches/observes its settings, so for me it is enough to set "debug": true,
, then save, and in the console I see:
reloading settings Packages/User/SublimeLinter.sublime-settings
SublimeLinter: log_handler.py:77 Logging installed; log level INFO
If you save some settings and don’t see at least “reloading settings…” you’re likely editing the wrong file.
If I misspell “debug” as “debugs”, I get indeed an error message. E.g.
Invalid settings in 'Packages/User/SublimeLinter.sublime-settings':
Additional properties are not allowed ('debugs' was unexpected)