Multiple nots is knotty to read

Simplifying multiple nots:

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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;