Unfortunately, JavaScript canvas games do not currently support vsync options. However, we have added an option to turn off number pop-ups in order to improve performance in v0.0.7. We hope this update will be helpful.
https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame
Instead of forcing an update every frame, you can instead use requestAnimationFrame(), and then calculate the fps to get your delta time for updating the game. I see that the game is minified and obfuscated so I can’t see how you do things, so I’m afraid I can’t help much more with this.