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This package provides a rudimentary XOR check of a list of arguments in JS. Given any arity of arguments it will return true iff onlyone of the arguments istruthy, otherwise, it will return false.

npm install xor-js# XOR ;)yarn add xor-js

A powerful application is to combine this package withinvariant to create rules for your API.

importxorfrom'xor-js';importinvariantfrom'invariant';functionMyComponent({ primary, secondary, tertiary, ...props}){invariant(xor(primary,secondary,tertiary),'Only one of primary, secondary, or tertiary may be true.')return(...);}

This was adapted and inspired fromthis post on Code Review.