Bad code

bad_code.js

class Animal {
    constructor(age) {
        this.age = age
    }
}

class Dog extends Animal {
    constructor(amountOfLegs, age) {
        super(age)
        this.amountOfLegs = amountOfLegs
    }

    // Print out the wrod bark
    bark() {
        const BARK = 'Bark'
        console.log(`${BARK}`)
    }
}

class Cat extends Animal {
    constructor(amountOfLegs, age) {
        super(age)
        this.amountOfLegs = amountOfLegs
    }

    // Print out the wrod meow
    meow() {
        console.log('Meow')
    }
}

class Farm {
    constructor(animals) {
        this.animals = animals
        console.log('TEST ARRAY', this.animals)
    }

    // Return a count of the animals for each age
    // I think no animal will be older than 10 so this should be fine
    gettFarmAnimalAgecCount() {
        let MAX_AGE_COUNT = 10

        let animalsByAge = {}

        for (let age = 0; age < MAX_AGE_COUNT; age++) {
            const c = this.getAnimalsOfAge(age)
            // We only want a key / value pair for animals of the ages that exist, so dont save for cases of 0
            if (c > 0) {
                animalsByAge[age] = c   
            }
        }

        return animalsByAge
    }
    
    // Get count of animals of age
    getAnimalsOfAge(age) {
        let m = 0

        for (let indexOfAnimalInArray = 0; indexOfAnimalInArray < this.animals.length; indexOfAnimalInArray++) {
            if (this.animals[indexOfAnimalInArray].age == age) {
                m++
            }
        }
        if (m <= 0) {
            return 0
        }

        return m
    }
}

let dog = new Dog(1, 1)
let dog2 = new Dog(1, 2)
let cat = new Cat(1, 2)

let farm = new Farm([dog2, dog, cat])

console.log(farm.gettFarmAnimalAgecCount())