All files utils

85.71% Statements 42/49

75% Branches 18/24

90.91% Functions 20/22

87.23% Lines 41/47

File	Statements		Branches		Functions		Lines
bit-array.ts	84.85%	28/33	62.5%	10/16	100%	11/11	84.85%	28/33
event.ts	75%	6/8	100%	0/0	71.43%	5/7	83.33%	5/6
exception.ts	100%	8/8	100%	8/8	100%	4/4	100%	8/8