Multiple nots is knotty to read

Simplifying multiple nots:

const isVariant = e.match(VARIANT_TESTER);
const matchingFirstHanzi = isVariant?.[2];
const matchingSecondHanzi = isVariant?.[4];

// knotty read:
// const needToShow
//     = !isVariant || (matchingFirstHanzi !== hanzi && matchingSecondHanzi !== hanzi);

// De-Morgan'd, easy to read:
// const needToHide = isVariant && (matchingFirstHanzi === hanzi || matchingSecondHanzi === hanzi);

const needToHide = isVariant && [matchingFirstHanzi, matchingSecondHanzi].includes(hanzi);
const needToShow = !needToHide;