[Solved. Posted with code] Enable / disable hit boxes once per animation frame?

Phaser 3
12

Thanks both to @Milton and @samme for the help. Here’s the working code:

Play.js

export default class Play extends Phaser.Scene {

create() {
    //Player
    this.player = new Player(this, 0, 0);
	this.container = this.add.container(100, 100);
  	this.container.setSize(16, 16);
  	this.physics.world.enable(this.container);
  	this.container.add(this.player);
  	//Weapon
	this.meleeWeapon = new MeleeWeapon(this, 0, 0);
	this.physics.world.enable(this.meleeWeapon);
	this.container.add(this.meleeWeapon); 
    this.meleeWeapon.setUp();
    //Enemy
	this.enemy = new Enemy(this, 600, 600);
	this.enemies = this.add.group();
	this.enemies.add(this.enemy)
	//Collisions
  	this.physics.add.overlap(this.meleeWeapon, this.enemies, this.onMeetEnemy, false, this);
	}

//the enemy class is in charge of subtracting damage from the enemy's health
onMeetEnemy(weapon, enemy) {
   enemy.takeDamage(weapon.damage);
}
if(this.spaceBar.isDown) {
   if(!this.meleeWeapon.isAttacking) {
	this.meleeWeapon.attack();
    }
   }

onHitEnemy(weapon, enemy) {
    if(weapon.isAttacking) {
        enemy.takeDamage(this.meleeWeapon.damage);
        weapon.body.enable = false;
    }
  }
}

Weapon.js

export default class MeleeWeapon extends Phaser.Physics.Arcade.Sprite
{
    constructor (scene, x, y)
    {
       //... add to scene and so on...

         this.anims.create({
            key: 'attack',
            frames: this.anims.generateFrameNames('meleeWeapon', {prefix:'meleeWeapon-attack-', start: 1, end: 4 }),
            frameRate: 10,
            repeat: 0
        });

        this.damage = 1;

        }

    setUp()
    {
        this.body.enable = false;
        this.isAttacking = false;
    }

    attack ()
    {
        if(!this.isAttacking)
        {
            this.isAttacking = true;
            this.body.enable = true;
            this.attackAnimation = this.anims.play('attack', false);
            this.attackAnimation.on('animationcomplete', () => {
                this.body.enable = false;
                this.isAttacking = false;
            }); 

        }   
    }
}