How to stop animation script from repeating?

Question

css

Good day to all.
I found an animation suitable for the site, but could not figure out how to stop the re-animation.
CODE
I don't know how to speed up the animation.
Probyval everything that was smart enough in JS, but since there is not much of it, I was only able to change colors and numbers.
Tell me how to stop the animation after it is completed and, if possible, how to speed it up?
Thank you!

Answer 1

On line 117, comment out this.index = 0; to stop repeat.
The speed is passed as the delay parameter to the Text constructor on line 180.

text = new Text({
        copy: 'Grawer Warszawy',
        delay: 10,
    });