Bracket notation with empty path

Setup

Selector: $[]

{"": 42, "''": 123, "\"\"": 222}

Results

Consensus

Not supported

Other responses

Bash (JSONPath.sh) 

[]

C (json-glib) 

[]

Elixir (jaxon) 

[
  42
]

Golang (github.com-spyzhov-ajson) 

[
  42
]

JavaScript (Goessner) ² 

[
  {
    "": 42,
    "\"\"": 222,
    "''": 123
  }
]

JavaScript (jsonpath-plus) 

[
  42
]

PHP (Goessner) ² 

[
  {
    "": 42,
    "\"\"": 222,
    "''": 123
  }
]

PHP (softcreatr-jsonpath) 

[
  {
    "": 42,
    "\"\"": 222,
    "''": 123
  }
]

Python (jsonpath) ² 

[
  {
    "": 42,
    "\"\"": 222,
    "''": 123
  }
]

Ruby (jsonpath) 

[]

dotNET (JsonPathLib) 

[
  {
    "": 42,
    "\"\"": 222,
    "''": 123
  }
]

Errors

Clojure (json-path) ¹ 

java.lang.Exception object must be an array.

Golang (github.com-bhmj-jsonslice) ¹ ³ 

field not found

Golang (github.com-oliveagle-jsonpath) ¹ 

len(tail) should >=3, []

Perl (JSON-Path) 

Assertion ("]" is not an operator) failed!
 at build/lib/perl5/Carp/Assert.pm line 282, <STDIN> line 1.
	Carp::Assert::assert(...) called at build/lib/perl5/JSON/Path/Evaluator.pm line 215
	JSON::Path::Evaluator::_evaluate(...) called at build/lib/perl5/JSON/Path/Evaluator.pm line 120
	JSON::Path::Evaluator::evaluate(...) called at build/lib/perl5/JSON/Path/Evaluator.pm line 93
	JSON::Path::Evaluator::evaluate_jsonpath(...) called at build/lib/perl5/JSON/Path.pm line 103
	JSON::Path::values(...) called at main.pl line 11

Rust (jsonpath_plus) 

Error Parsing JSON Path:
$[]
panic occurred

Footnotes