Depends on if I'm going for a realistic drumkit or something more synthetic.
For realistic drumkits, I stick to the "traditional" mixing mindset where you pan the drums like a physical drumkit - kick is center, snare is slightly to the left of that, hi hats are slightly to the left of that, hi tom is between the snare and the kick drum, low tom is to the right of the kick drum, the floor tom is even further to the right, and then you have your ride cymbal on the right and a crash cymbal somewhere (traditionally on the left, above or next to the hi hat and hi tom). Then I'll decide if I want the listener's perspective to be up on stage with the band (so the drums would be panned the way I just mentioned) or in the crowd looking up at the band on stage (so the drums would be panned
inverted to the way I just mentioned).
If I'm making some synthetic drum machine beat or something very unnatural in composition, the kick and snare tend to remain centered and mono, though elements of the snare might be processed to be wider. I play with the panning on hi hats a lot either manually through automation or with an autopanning effect - same with shakers, tambourines, and other percussion; otherwise they get pushed super wide (i tend to make liberal use of the haas effect, which might not be a good thing

). Rides get panned and crash cymbals tend to get spread super wide, so they're kind of out of the way of everything and just tingling the edges of your ears.
As long as you don't have everything sitting on top of each other (no matter where they are in the stereo field) and your decisions follow a consistent pattern, you can pan things however you want. I've been listening to a lot of early 00's hardcore and post-hardcore lately and the way they mix their drums can get really crazy. On one record I was hearing every element of the drumkit except for the kick and the snare hard panned left or right! In the context of the mix as a whole, however, it made sense.