@extra-entries/find-key (npm): Get key of first value in entries that satisfies the test, like Array.findIndex().
Keywords: extra|entries|standard|utility|method|manipulation|function|merferry|find|key|chunk|compare|concat|count|count-as|difference|drop|every|filter|filter-at|find-all|flat|flat-map|for-each|from-lists|get|get-all