… because currently, the -simple edition works fine for me.
If you need fancy, tell me why and I might resume it.
If your collection is missing the slot you want to work with, have it be created on the fly.
The kitchen sink edition supports async factory functions and custom preconfiguration. If you prefer a leight-weight approach, check out getoraddkey-simple.
Inspired by lodash feature request #2288.
see doc/demo/usage.js :TODO:
ISC