Endless number of awaits with 100% CPU usage on first load of Routify app

When I first open my app on a new domain (or in an incognito tab), the browser tab freezes with 100% CPU usage. If I force close the tab and open it again, everything works as normal: very strange.

If I pause execution while this is happening, it looks like there is some sort of infinite number of waiting promises, or infinite recursion happening. Here is what the call stack looks like:

And here are the relevant functions that are getting called repeatedly. First, pushstate:

then updatePage:

and finally preload():

version Routify 2.12.7 with Svelte 3.32.1.

Again, this only happens on the first load, not subsequent ones.

@jakobrosenberg: happy to add this to our next live debugging session 😁

[jakobrosenberg]

This should hopefully be fixed now. Thanks for the help on this one @mizzao and @lamualfa.

[jakobrosenberg]

Thanks for the repro @lamualfa . I’m trying to crack this one.