Export zap's internal observing logger#372

Merged

akshayjshah merged 2 commits intouber-go:masterfrom billf:observer

Mar 14, 2017

+74-119

Commits on Mar 14, 2017

Expose an observer suitable for use in tests

billf
authored and
Akshay Shah
committed
Unexport ObservedLogs.Add
Akshay Shah
committed