hs.reload()
Example output:
2026-01-14 17:01:54: -- Lazy extension loading enabled
2026-01-14 17:01:54: -- Loading ~/.hammerspoon/init.lua
2026-01-14 17:01:54: -- Loading extension: timer
2026-01-14 17:01:54: -- Loading extension: caffeinate
2026-01-14 17:01:54: -- Done.