I think there are a few cases of non-transitive equalities in JavaScript, specifically around falsey values. Part of it also has to do with whether x is the rig

I think there are a few cases of non-transitive equalities in JavaScript, specifically around falsey values. Part of it also has to do with whether x is the right-side input or the left-side input, because that changes type coercion rules. Aha, found one: ['0'] == 0 > true [0] == 0 > true [0] == ['0'] > false Transitivity of equality can also never be relied upon when dealing with Floating Point numbers. This is correct and unavoidable behavior, but still surprising to many developers.