Im making a game where I need the enemy to spot the player once in a certain range, and then start chasing the player. I cant find anything anywhere at all that would help with how to make sprites chase each other

Im using Kaboom.js, javascript only (no html), on replit.com

Here is my code so far but it does not work because to my knowledge Kaboom.js does not have a way to get only the x position of a sprite

export default function run(speed = 250, dir = -1) {
    return {
        id: "run",
        require: [ "pos", "area", ],
        add() {
                if (player.pos > this.pos) {
                    dir = -dir
                    this.play("runRight")
                } else if (player.posx < this.posx) {
                    dir = -dir
                    this.play("runLeft")
                }
        },
        update() {
            this.move(speed * dir, 0)
        },
    }
}