Heroes of Code and Logic VII

function heroesOfCodeAndLogicVII(arr) {

    let heroNumber = Number(arr.shift())
    let heroes = {}
    arr.splice(0, heroNumber).map(row => row.split(' ')).map(row => {
        heroes[row[0]] = { hp: Number(row[1]), mp: Number(row[2]) }
    })

    let commandParser = {
        'CastSpell': castSpell,
        'TakeDamage': takeDamage,
        'Recharge': recharge,
        'Heal': heal
    }

    arr.forEach(line => {
        let [command, ...args] = line.split(' - ')
        if (command !== 'End') {
            console.log(commandParser[command](heroes, ...args))
        }
    })

    Object.entries(heroes).sort((a, b) => a[0].localeCompare(b[0])).sort((a, b) => b[1].hp - a[1].hp)
        .map(row => console.log(`${row[0]}\n  HP: ${row[1].hp}\n  MP: ${row[1].mp}`))

    function castSpell(heroes, heroName, mpNeeded, spellName) {
        mpNeeded = Number(mpNeeded)
        let hero = heroes[heroName]
        if (hero.mp >= mpNeeded) {
            hero.mp -= mpNeeded
            return `${heroName} has successfully cast ${spellName} and now has ${hero.mp} MP!`
        }
        return `${heroName} does not have enough MP to cast ${spellName}!`
    }

    function takeDamage(heroes, heroName, damage, attacker) {
        damage = Number(damage)
        let hero = heroes[heroName]
        hero.hp -= damage
        if (hero.hp > 0) {
            return `${heroName} was hit for ${damage} HP by ${attacker} and now has ${hero.hp} HP left!`
        }
        delete heroes[heroName]
        return `${heroName} has been killed by ${attacker}!`
    }

    function recharge(heroes, heroName, amount) {
        amount = Number(amount)
        let hero = heroes[heroName]
        let oldValue = hero.mp
        hero.mp = Math.min(200, hero.mp + amount)
        return `${heroName} recharged for ${hero.mp - oldValue} MP!`
    }

    function heal(heroes, heroName, amount) {
        amount = Number(amount)
        let hero = heroes[heroName]
        let oldValue = hero.hp
        hero.hp = Math.min(100, hero.hp + amount)
        return `${heroName} healed for ${hero.hp - oldValue} HP!`
    }
}