Custom event freezing

I read somewhere that coding is a bit like writing a novel except that if you forget a comma on page 127, the entire book doesn’t make sense.

Except when you code the IDE tells you when there's a mistake such as a missing comma.. That makes me think that an event editor would be really nice, especially if it tells you if you have an invalid event command (e.g. missing parameters) or if you character queue command is invalid (e.g. like the above mistake).