jq Delete Not Working?

[seifer44]

Describe the bug
jq's del() function does not appear to work as expected.

Version
v0.45.25

To Reproduce

1. Set up a watch on https://flatoutsuspension.net/products/impreza-grl
2. Use Playwright/Chromium fetching.
3. Add a filter of jq:del(.priceValidUntil)

Shared watch URL: https://changedetection.io/share/X6_XUSIFeV0a

Expected behavior
All JSON to be displayed, except for .priceValidUntil.

Example

$ cat tmp.json
{
    "@context": "https://schema.org",
    "@type": "BreadcrumbList",
    "itemListElement": [
        {
            "@type": "ListItem",
            "position": 1,
            "item": {
                "@id": "https://flatoutsuspension.net/",
                "name": "Home"
            }
        },
        {
            "@type": "ListItem",
            "position": 2,
            "item": {
                "@id": "https://flatoutsuspension.net/products/",
                "name": "Shop by Product"
            }
        },
        {
            "@type": "ListItem",
            "position": 3,
            "item": {
                "@id": "https://flatoutsuspension.net/coilover-kits/",
                "name": "Coilover Kits"
            }
        },
        {
            "@type": "ListItem",
            "position": 4,
            "item": {
                "@id": "https://flatoutsuspension.net/offroad-lift-coilovers/",
                "name": "Offroad & Lift Coilovers"
            }
        },
        {
            "@type": "ListItem",
            "position": 5,
            "item": {
                "@id": "https://flatoutsuspension.net/pages/flatout_grlite",
                "name": "Flatout GR Lite Coilovers"
            }
        },
        {
            "@type": "ListItem",
            "position": 6,
            "item": {
                "@id": "https://flatoutsuspension.net/products/impreza-grl",
                "name": "Subaru Impreza/ WRX Coilovers [GR Lite]"
            }
        }
    ]
}{
    "@type": "Offer",
    "priceCurrency": "USD",
    "price": "1795",
    "itemCondition": "https://schema.org/NewCondition",
    "availability": "https://schema.org/InStock",
    "url": "https://flatoutsuspension.net/products/impreza-grl",
    "priceValidUntil": "2025-07-03"
}
$ jq 'del(.priceValidUntil)' tmp.json
{
  "@context": "https://schema.org",
  "@type": "BreadcrumbList",
  "itemListElement": [
    {
      "@type": "ListItem",
      "position": 1,
      "item": {
        "@id": "https://flatoutsuspension.net/",
        "name": "Home"
      }
    },
    {
      "@type": "ListItem",
      "position": 2,
      "item": {
        "@id": "https://flatoutsuspension.net/products/",
        "name": "Shop by Product"
      }
    },
    {
      "@type": "ListItem",
      "position": 3,
      "item": {
        "@id": "https://flatoutsuspension.net/coilover-kits/",
        "name": "Coilover Kits"
      }
    },
    {
      "@type": "ListItem",
      "position": 4,
      "item": {
        "@id": "https://flatoutsuspension.net/offroad-lift-coilovers/",
        "name": "Offroad & Lift Coilovers"
      }
    },
    {
      "@type": "ListItem",
      "position": 5,
      "item": {
        "@id": "https://flatoutsuspension.net/pages/flatout_grlite",
        "name": "Flatout GR Lite Coilovers"
      }
    },
    {
      "@type": "ListItem",
      "position": 6,
      "item": {
        "@id": "https://flatoutsuspension.net/products/impreza-grl",
        "name": "Subaru Impreza/ WRX Coilovers [GR Lite]"
      }
    }
  ]
}
{
  "@type": "Offer",
  "priceCurrency": "USD",
  "price": "1795",
  "itemCondition": "https://schema.org/NewCondition",
  "availability": "https://schema.org/InStock",
  "url": "https://flatoutsuspension.net/products/impreza-grl"
}

I have the same expected output from https://jqplay.org

Screenshots
Below, you can see a detected change from priceValidUntil, which is not ideal.

Desktop (please complete the following information):

• OS: Windows 10
• Browser FireFox
• Version 127.0.2

[dgtlmoon]

Hmm your shared watch does not include any of the priceValidUntil parts so I cant reproduce it

Also if I use jq:del(.itemListElement) I can see that it gets removed.. (@type goes to the bottom of the list)

unsure? seems to be OK? i tried in plain-requests and chrome fetcher

[seifer44]

I was able to replicate removing .itemListElement, but I still can't delete .priceValidUntil.

Here's another share link of me attempting to reapply the jq filter: https://changedetection.io/share/JmkkjsPJ068a

[seifer44]

I'm still having this problem. Are you still not able to reproduce it @dgtlmoon?

[dgtlmoon]

@seifer44 correct #2462 (comment) for now :/

[seifer44]

hhmmm... is the delete only happening on the first JSON object? That behavior would match what was found with jq:del(.itemListElement) working.