fix(listener): return if there is no arguments

[evenchange4]

No description provided.

[codecov]

Codecov Report

Merging #6 into master will increase coverage by 0.06%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master       #6      +/-   ##
==========================================
+ Coverage    97.5%   97.56%   +0.06%     
==========================================
  Files           6        6              
  Lines          40       41       +1     
  Branches        1        2       +1     
==========================================
+ Hits           39       40       +1     
  Misses          1        1

Impacted Files	Coverage Δ
src/listener.js	94.44% <100%> (+0.32%)	⬆️

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