Dot notation with double quotes

Setup

Selector: $."key"

{
  "key": "value",
  "\"key\"": 42
}

Results

Other responses

Bash (JSONPath.sh) 

[
  "value"
]

C (json-glib) 

[
  42
]

Clojure (json-path) ¹ 

null

Cpp (jsoncons) 

[
  "value"
]

Dart (json_path)

Not supported

Instance of 'ParserException': end of input expected (at 1:2)

Elixir (ExJsonPath)

Not supported

syntax error before: {string,1,<<"key">>}

Elixir (jaxon) 

[
  "value"
]

Elixir (warpath) ¹

Not supported

Parser error: Invalid token on line 1, syntax error before: <<"key">>

Golang (github.com-PaesslerAG-jsonpath) ¹

Not supported

parsing error: $."key"	:1:3 - 1:8 unexpected String while scanning JSON select expected Ident, "." or "*"

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

"value"

Golang (github.com-ohler55-ojg)

Not supported

Golang (github.com-oliveagle-jsonpath) ¹ 

42

Golang (github.com-spyzhov-ajson) 

[
  "value"
]

Golang (github.com-vmware-labs-yaml-jsonpath) 

[
  42
]

Haskell (jsonpath)

Not supported

Invalid JSONPath: $."key"
 Error: 1:3:
  |
1 | $."key"
  |   ^
unexpected '"'
expecting '.' or white space

JavaScript (Goessner) ² 

[
  42
]

JavaScript (brunerd)

Not supported

JavaScript (jsonpath)

Not supported

Parse error on line 1:
$."key"
--^
Expecting 'STAR', 'IDENTIFIER', 'SCRIPT_EXPRESSION', 'INTEGER', 'END', got 'QQ_STRING'

JavaScript (jsonpath-plus) 

[]

JavaScript (jsonpathly)

Not supported

mismatched input '"key"' expecting {'*', 'true', 'false', 'null', KEY, SPECIAL_KEY, NUMBER}

Java (com.github.jsurfer)

Not supported

line 1:2 no viable alternative at input '."key"'
org.antlr.v4.runtime.misc.ParseCancellationException

Java (com.jayway.jsonpath) ¹ ³ 

42

Kotlin (com.nfeld.jsonpathkt) ¹ 

42

Objective-C (SMJJSONPath) ¹ ³ 

42

PHP (Goessner) ² 

[
  42
]

PHP (galbar-jsonpath)

Not supported

Invalid JSONPath error: 'Error in JSONPath near '."key"''

PHP (remorhaz-jsonpath) 

[
  "value"
]

PHP (softcreatr-jsonpath) 

[
  "value"
]

Perl (JSON-Path) 

[
  "value"
]

Python (jsonpath) ² 

[
  42
]

Python (jsonpath-ng) 

[
  "value"
]

Python (jsonpath-rw) 

[
  "value"
]

Python (jsonpath2)

Not supported

line 1:2 mismatched input '"key"' expecting {'*', ID}
ValueError('line 1:2 mismatched input \'"key"\' expecting {\'*\', ID}')

Python (python-jsonpath)

Not supported

JSONPathSyntaxError("unexpected token 'key'")

Raku (JSON-Path)

Not supported

JSON path parse error at position 1

Ruby (jsonpath) 

[]

Rust (jsonpath)

Not supported

parsing error

Rust (jsonpath_lib)

Not supported

path error: 
$."key"
^^

Rust (serde_json_path)

Not supported

at position 2, in dot member name, must start with lowercase alpha or '_'

Scala (jsonpath) 

[
  42
]

Swift (Sextant) 

[
  42
]

dotNET (Json.NET) 

[
  42
]

dotNET (JsonCons.JsonPath) 

[
  "value"
]

dotNET (JsonPath.Net)

Not supported

Could not find any valid selectors.

dotNET (JsonPathLib) 

[
  42
]

dotNET (Manatee.Json) 

[
  "value"
]

Errors

Erlang (ejsonpath) 

init terminating in do_boot (function_clause)

Crash dump is being written to: /dev/null...done
{"init terminating in do_boot",function_clause}

Rust (jsonpath_plus) 

Error Parsing JSON Path:
$."key"
panic occurred

Footnotes