draw.js

draw() {
    let x = 0, y = 0;
    for (const row of this.board) {
        x = 0;
        for (const point of row) {
            this.canvasContext.fillStyle = point.color;
            this.canvasContext.fillRect(x, y, Game.SQUARE_LENGTH, Game.SQUARE_LENGTH);
            this.canvasContext.restore();
            this.canvasContext.strokeStyle = Game.BORDER_COLOR;
            this.canvasContext.strokeRect(x, y, Game.SQUARE_LENGTH, Game.SQUARE_LENGTH);
            x += Game.SQUARE_LENGTH;
        }
        y += Game.SQUARE_LENGTH;
    }
    setTimeout(() => {
        requestAnimationFrame(this.draw.bind(this));
    }, 17)
}