Bugfixes: Error Catching

[CodeLenny]

Closes #11

[codecov]

Codecov Report

Merging #12 into master will increase coverage by 0.63%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #12      +/-   ##
==========================================
+ Coverage   98.75%   99.38%   +0.63%     
==========================================
  Files           6        7       +1     
  Lines         160      163       +3     
==========================================
+ Hits          158      162       +4     
+ Misses          2        1       -1

Flag	Coverage Δ
#ava	78.72% <100%> (?)
#httptest	42.55% <20%> (-7.45%)	⬇️
#jest	75.46% <70%> (?)
#unittest	84.04% <100%> (+7.79%)	⬆️

Impacted Files	Coverage Δ
index.js	100% <100%> (+1.19%)	⬆️
lib/catchError.js	100% <100%> (ø)

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