OptionaleffectsTemporary effects that are active on this object
OptionalspawningTotal number of ticks required to spawn this creep
Tick at which this creep will finish spawning
Capacities should not be null, except on minerals in a lab when another mineral type is already being stored.
ID of the user who owns this object.
Note: NPCs do not have long-form hex ID strings like normal players:
Spawn is your colony center. This structure can create, renew, and recycle creeps.
https://docs.screeps.com/api/#StructureSpawn