Hash in path

[brettz9]

Hi,

Thanks for your library--it's working well for me.

Just a heads up though that although your README mentions use with the # character, as expected per the spec, the internal PREFIX_RE regular expression doesn't allow such paths (it only allows a hash at the end).

[0xfede]

Hi, I'm not sure I understand the problem: can you provide an example?

[brettz9]

Maybe I am mistaken, but shouldn't the fragments such as listed at https://datatracker.ietf.org/doc/html/rfc6901#section-6 work, e.g., pointer({abc: true}, '#/abc')?

The path in your example at https://github.com/vivocha/jsonref?tab=readme-ov-file#pointerdata-path--value suggests this form of fragment identifier should work (i.e., #/prop1/prop2):

`path`, either a string (`#/prop1/prop2`) or an array of path components (`[ "#", "prop1", "prop2" ]`

This doesn't work currently because you have the following code in src/pointer.ts:

      const PREFIX_RE: RegExp = /^(0|[1-9][0-9]*?)([#]?)$/;
// ...
      const match = prefix.match(PREFIX_RE);
      if (!match) {
        throw new SyntaxError(`Bad prefix ${prefix}`);
      }

...and that regular expression, PREFIX-RE will not allow # at the beginning.