@extra-array/count-all-on (npm): Counts occurrences of values.
Keywords: extra|array|bsearch|bsearchAny|bsearchClosest|bsearchRight|chunk|compare|concat$|copy$|copy|copyWithin|count|countAllOn|countOn|cut|cutRight|cycle|difference|differenceOn|fill|filter$|findIndices|findRight|flat|get|getAll|getLerp|group|groupOn|head|index|infix|infixes|init|interleave|intersection|intersectionOn|is|isDisjoint|isDisjointOn|isEqual|isInfix|isInfixOn|isPermutation|isPermutationOn|isPrefix|isPrefixOn|isSubsequence|isSubsequenceOn|isSuffix|isSuffixOn|isUnique|isUniqueOn|last|map$|max|maxOn|min|minOn|partition|partitionOn|permutation$|permutation|permutations|pop|prefix|prefixes|push|range|rangeOn|repeat|reverse|rotate$|rotate|search|searchAll|searchRight|set$|set|shift|slice$|sort$|sort|sortOn$|sortOn|splice|split|subsequence|subsequences|suffix|suffixes|swap$|swap|tail|union$|union|unionOn$|unionOn|unique|uniqueOn|unshift|zip|all|on|accumulate|adjacent-combine|cartesian-product|clear|concat|copy-within|count-each|cut-at|cut-at-right