Support converting JSON5 comments to JSON object fields

[aSemy]

Presently comments are discarded when reading data and and writing data out. This allows for full compatibility with plain-JSON, but it would be nice if comments were handled.

In plain-JSON a common workaround is to use //

{
  "//": "comment",
  "example": "value"
}

If comments occur within JSON5-objects this convention could be formalised for JSON5<->plain-JSON mapping. JSON5 comments would be converted to and from String-JsonPrimitives with a key of // (this would need to be unique)..

{
  // comment
  "example": "value"
}

When comments are not easily mapped to an object value (they're in arrays, or outside of an object) I'm not sure what can be done.

[astynax]

Nice idea!
What do you think about preserving of the original place of comment?

{
  // Here is
  // a comment for "a"
  "a": 42
  // and a comment for "b"
  "b": false
}

can become

{
  "//\"a\"": ["Here is", "a comment for \"a\""],
  "a": 42,
  "//\"b\"": ["and a comment for \"b\""],
  "b": false
}

Such "markup" will protect against of merging all the comments into a single key or from the "the last value wins" situation.

And, yes, it looks a bit ugly :(