Describe the bug

If you put = instead of == or === in filter expression [?(@.<property>=<value>], it actually replaces in the result all values of that <property> with new <value>.

Code sample or steps to reproduce

{
  "books": [
    {
      "id": 1,
      "name": "HPMOR"
    },
    {
      "id": 2,
      "name": "TG"
    }
  ]
}

Json path

$..books[?(@.id=55)]

Result:

[
  {
    "id": 55,
    "name": "HPMOR"
  },
  {
    "id": 55,
    "name": "TG"
  }
]

Console error or logs

Tried this on https://jsonpath-plus.github.io/JSONPath/demo/ site, there were no errors in logs.

Expected behavior

I would prefer this handled as invalid syntax.

Expected result

hmm, it could be empty, idk

Environment (IMPORTANT)

Tried this on https://jsonpath-plus.github.io/JSONPath/demo/, sorry, can't find the version it uses.

Desktop**

• OS: MacOS Monterey 12.2.1
• Browser and version Mozilla 101.0

Additional context

Actually, this caught me in https://github.com/Kong/insomnia, but found this behavior in the library itself.
According to http://jsonpath.com/, original implementation has this issue too.

PS
Sorry, I am not a JS developer, cannot provide all details and didn't manage to track the root of the problem further.