Fix: crash on WebStorm (fixes #14)

[mysticatea]

Fixes #14.

[codecov-io]

Codecov Report

Merging #15 into master will decrease coverage by 0.56%.
The diff coverage is 80%.

@@            Coverage Diff             @@
##           master      #15      +/-   ##
==========================================
- Coverage   97.43%   96.87%   -0.57%     
==========================================
  Files          25       25              
  Lines         312      320       +8     
==========================================
+ Hits          304      310       +6     
- Misses          8       10       +2

Impacted Files	Coverage Δ
lib/internal/get-linters.js	86.66% <80%> (-13.34%)	⬇️

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