Our JS style guide is an ESLint config determined with a reasonably quick discussion between our frontend devs. We referred to Airbnb but didn't lift it directly, basically we just had a chat about what we thought was reasonable and someone did the work to codify it in the config and handle that painful first commit that brings the existing code into line.
Basically what I'd suggest - there's no universally right or wrong config (even though personally I think there are some universally right/wrong choices within the options ;)). It's about a workable standard that fits your team's needs.