@extra-iterable/search-infix-right (npm): Finds last index of an infix.
Keywords: extra|iterable|search|infix|right|searchInfixRight|accumulate|cartesian-product|chunk|compare|concat|copy|copy-within|count|count-as|cut|cut-at|cut-at-right|cut-right|cycle|difference|drop|drop-right|drop-while