What is the emotion when someone dies?

However painful the mortal disease, there is every reason to believe that the moment preceding death is one of calmness and freedom from pain. As life approaches extinction, insensibility supervenes—a numbness or disposition to repose, which do not admit of the idea of suffering. Even in those cases where the activity of the mind remains to the last, and where nervous sensibility would seem to continue, it is surprising how often there has been observed a state of happy feeling on the approach of death.

The Encyclopaedia of Death and Life in the Spirit World—Opinions and Experiences from Eminent Sources