[gorhill]

This is not mentioned in the article, so just to be more specific, the override of `XMLHttpRequest.open()` applies only for the Safari-specific code of the extension.[1]

[1] See https://github.com/chrisaljoudi/uBlock/tree/master/platform/..., the code is in `vapi-client.js`, line 247.

[btown]

Direct link: https://github.com/chrisaljoudi/uBlock/blob/master/platform/...

[cjk101010]

Thanks for the pointer. You are right, but blocked gets the request in all three browsers nonetheless.