Avoid type-checking (part 2)
Avoid type-checking (part 2)

DavidVujic/clean-code-javascript,chux0519/clean-code-javascript,HemantPawar/clean-code-javascript,andersontr15/clean-code-javascript-es,ChrisNikkel/clean-code-javascript,greg-dev/clean-code-javascript-pl,ryanmcdermott/clean-code-javascript