Why does SvelteKit load 4 about:blank pages when adding Sentry?

[kevinrenskers]

I originally asked this on the Sentry repo, but they say it's not them making these requests, it must be SvelteKit. Maybe somewhere here knows?

I started a completely blank SvelteKit project, by using npm create svelte@latest my-app and choosing the skeleton option.

The only change I made is adding this code to hooks.client.ts:

import * as SentrySvelte from "@sentry/svelte";

SentrySvelte.init({
  dsn: "https://my_dsn_here",
});

And now I can see 4 requests getting made to about:blank, and I just can't figure out why this is happening. It seems to only happen in Safari, or at least it's the only browser that shows these in the network inspector.

It's not a huge deal of course, but I just can't figure out what line of code is causing this. Creating a build of the project and grepping for about:blank doesn't give any results.

[filipwiniarski]

+1, curious about that one. I'm not sure if it affects performance, but I'm trying to optimize my app for Safari