fix: added NaN check for directive render loops closes #1873

[logaretm]

closes #1873

[codecov]

Codecov Report

Merging #1880 into master will decrease coverage by 0.03%.
The diff coverage is 83.33%.

@@            Coverage Diff             @@
##           master    #1880      +/-   ##
==========================================
- Coverage   97.19%   97.15%   -0.04%     
==========================================
  Files          60       60              
  Lines        2243     2249       +6     
  Branches      696      698       +2     
==========================================
+ Hits         2180     2185       +5     
- Misses         57       58       +1     
  Partials        6        6

Impacted Files	Coverage Δ
src/utils/index.js	97.63% <83.33%> (-0.35%)	⬇️

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