Fix flow error

[slonoed]

No description provided.

[codecov-io]

Codecov Report

Merging #17 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master     #17   +/-   ##
======================================
  Coverage    97.3%   97.3%           
======================================
  Files          10      10           
  Lines         483     483           
  Branches       87      87           
======================================
  Hits          470     470           
  Misses          9       9           
  Partials        4       4

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[kitten]

Closing since it's a duplicate of #16, but thanks for taking the time to send a PR 💛