New built spawn has spawning set to undefined instead of null

[Puciek]

As per documentation of StructureSpawn http://support.screeps.com/hc/en-us/articles/205990342-StructureSpawn its attribute spawning should be set to null when it's not busy. 

But a newly built spawn had it set as undefined until I've made it spawn its first creep:

Game.spawns['E32S35-3'].spawning

undefined

 

Which does not seem like a intended way for it to work. You cannot reproduce this issue in SIM by just placing a spawn, but I imagine that building will do it.

[RaskVann]

Confirmed Game.spawns.Spawn1.spawning = null in simulator.

But doesn't checking == null or != null sufficient in both cases? This is a weird edge case.

[Puciek]

Well, that is how i've found the issue:

 _.find(this.spawns, {spawning: null});

[artch]

Thanks, fixed.