Filter expression with subpaths

Setup

Selector: $[?(@.a.b==3)]

[
  {
    "a": {
      "b": 3
    }
  },
  {
    "a": {
      "b": 2
    }
  }
]

Results

Consensus

[
  {
    "a": {
      "b": 3
    }
  }
]

Other responses

Bash (JSONPath.sh)

[
  3
]

C (json-glib)

Not supported

Unable to compile selector `$[?(@.a.b==3)]': Invalid array index definition “?(@.a.b==3)]”

Clojure (json-path) ¹

[]

Elixir (jaxon)

[]

Golang (github.com-oliveagle-jsonpath) ¹

[]

Kotlin (com.nfeld.jsonpathkt) ¹

Not supported

Unexpected char, char=?, index=2

PHP (softcreatr-jsonpath)

[]

Python (jsonpath-ng)

Not supported

JsonPathLexerError('Error on line 1, col 2: Unexpected character: ? ')

Python (jsonpath-rw)

Not supported

JsonPathLexerError('Error on line 1, col 2: Unexpected character: ? ')

Python (jsonpath2)

Not supported

line 1:10 extraneous input '=' expecting {'@', '$', 'true', 'false', 'null', '{', '[', STRING, NUMBER}
ValueError("line 1:10 extraneous input '=' expecting {'@', '$', 'true', 'false', 'null', '{', '[', STRING, NUMBER}")

Raku (JSON-Path)

Not supported

Evaluation of embedded Perl 6 code not allowed (construct with :allow-eval)

Rust (jsonpath)

[]

Errors

PHP (Goessner) ²

ArgumentCountError

Perl (JSON-Path)

non-safe evaluation, died at main.pl line 11.

Footnotes

• ¹ This implementation returns a single value where only one match is possible (instead of an array of a single value).
• ² This implementation returns a specific not found value if no match exists.
• ³ This implementation returns a specific not found value if a query that would regularly return a single match results in no match.