No Rest For The Living

No Rest For The Living is a Minecraft mod that disables sleeping. Phantoms no longer spawn when you are sleep-deprived. Instead, attempting to sleep will summon phantoms every 1 to 2 minutes, essentially inverting the vanilla behaviour.

If you only want to disable sleeping without triggering spawns, you can set the doInsomnia gamerule to false. The playersSleepingPercentage gamerule becomes obsolete with this mod.