eloquent js squirrel journal

index.js

function hasEvent(event, entry) {
  return entry.events.indexOf(event) !== -1
}

function tableFor(event, journal) {
  return journal.reduce(
    (table, entry) => {
      const hasTheEvent = hasEvent(event, entry)
      const isSquirrel = entry.squirrel

      if (hasTheEvent && isSquirrel) {
        table[3] += 1
        return table
      }

      if (hasTheEvent) {
        table[1] += 1
        return table
      }

      if (isSquirrel) {
        table[2] += 1
        return table
      }

      table[0] += 1
      return table
    },
    [0, 0, 0, 0]
  )
}

console.log(tableFor('pizza', JOURNAL))