Fails to parse with trailing commas

[benbuckman]

Hello.
I am experimenting with using this for parsing Visual Studio Code's settings.json files which are in Microsoft's flavor of JSONC.
That syntax supports trailing commas, JS-style, like:

{
     "hello": "world",
}

But when I try to parse this snippet with this library, it raises:

jsonc_parser.errors.ParserError: <path> file cannot be parsed (message: Expecting property name enclosed in double quotes

Perhaps this library is implementing a narrower spec than VS Code's (is there a spec for JSONC at all?), but I wonder if this lack of comma support makes it not so useful for practical purposes.

Also, a question (and maybe a bug), is parse_str,

jsonc-parser/jsonc_parser/parser.py

Line 14 in 76d4421

def parse_str(_string: str) -> dict:

supposed to be an instance method (with self) or a @staticmethod (like parse_file)?

Thank you.

[ell1e]

For reference, Visual Studio Code as one of the most common JSONC implementations clearly allows trailing commas as can be seen if you save a file as .jsonc vs one saved as .json:

1. Trailing comma in .json file, shows error:

   

2. Trailing comma in .jsonc file, shows warning but is allowed without error:

   

3. In the user config which is JSONC, it won't even show a warning for it:

   

Hence it probably makes sense to allow a trailing comma by default if the intention is to support the most common usage of JSONC.