Support `[=]` and `{=}` token in `json-prune` series like AdGuard

[piquark6046]

Prerequisites

• I verified that this is not a filter list issue. Report any issues with filter lists or broken website functionality in the uAssets issue tracker.
• This is NOT a YouTube, Facebook or Twitch report. These sites MUST be reported by clicking their respective links.
• This is not a support issue or a question. For support, questions, or help, visit /r/uBlockOrigin.
• I performed a cursory search of the issue tracker to avoid opening a duplicate issue.
• The issue is not present after disabling uBO in the browser.
• I checked the documentation to understand that the issue I am reporting is not normal behavior.

I tried to reproduce the issue when...

• uBO is the only extension.
• uBO uses default lists and settings.
• using a new, unmodified browser profile.

Description

[=] and {=} tokens are used for checking a property's value to prune a matching parent property.
https://github.com/AdguardTeam/Scriptlets/blob/master/wiki/about-scriptlets.md#-%EF%B8%8F-json-prune

A specific URL where the issue occurs.

https://map.naver.com/p?c=15.00,0,0,0,dh

Steps to Reproduce

1. Add the following filter to your user filter:

map.naver.com##+js(json-prune-xhr-response, layers.[-].metadata.name.{=}.POI_Ads, ,propsToMatch, url:/PCWeb_Real.json)

2. Save the changes.
3. Visit the provided uRL.

Expected behavior

It should be works like what Its AdGuard version works.

map.naver.com#%#//scriptlet('json-prune-xhr-response', 'layers.[-].metadata.name.{=}.POI_Ads', '', '/PCWeb_Real.json')

Please note that AdGuard scriptlet (2.2.7 or higher) is required.

Actual behavior

uBO cannot understand the syntax. So, the filter does not work.

uBO version

1.65.0

Browser name and version

Firefox 142.0.1

Operating System and version

Ubuntu 25.04

[stephenhawk8054]

uBO has jsonpath for these cases. Not sure if it's worth to expand json-prune or not.

[piquark6046]

uBO has jsonpath for these cases.

I cannot find the 'jsonpath' term in https://github.com/gorhill/uBlock/wiki/Resources-Library#json-prunejs-

[stephenhawk8054]

Yeah, they are not documented yet: gorhill/uBlock@b18daa5 , but can be used already (it's being used in the main lists for some cases now). The flavour is similar to https://goessner.net/articles/JsonPath/index.html

Can you share how the JSON looks like and which parts you want to remove?

[piquark6046]

'new uBO-flavored JSONPath syntax' Hmm...

[stephenhawk8054]

Ok, I can see the requests at https://map.naver.com. I'll test with jsonpath syntax.

[stephenhawk8054]

I think this matches in the logger for me:

map.naver.com##+js(json-edit-xhr-response, .layers.*[?.metadata.name=="POI_Ads"], propsToMatch, /PCWeb_Real.json)

but I don't know how the ads on this site look like.

[piquark6046]

#3787 (comment)
The filter works. But, I think that uBO should support the syntax to allow loading AG scriptlet filters from AG filters list as some AG filters lists are registered in uBO.

[stephenhawk8054]

Yeah, it depends if gorhill has enough time or not. Is the scriptlet used a lot in AG?

---

@piquark6046 Btw, if needed, I can add the filter above to uBO while waiting for this.

[piquark6046]

Yeah, it depends if gorhill has enough time or not. Is the scriptlet used a lot in AG?

Two or three items found.

[Yuki2718]

If it's used only in json-prune-xhr-response or json-prune-fetch-response, there's already an imparity in their arguments. Related issue: AdguardTeam/FiltersCompiler#250

[gorhill]

In uBO json-prune doesn't accept JSON paths, you need json-edit for this.

[Stevoisiak]

uBO has jsonpath for these cases. Not sure if it's worth to expand json-prune or not.

The issue with jsonpath is it requires switching to json-edit, which doesn't support the same optional parameters as json-prune.

For example, the following filter works in AdGuard, but I cannot recreate it in uBlock Origin.

www.deviantart.com##+js(json-prune, @@entities.deviation.{-}.isAiGenerated.[=].true, currentPageData)