Payload property named message breaks with null value

[ly29]

Payload property named message breaks with null value

          "type": "object",
          "properties": {
            "message": {
              "type": ["string", "null"],
              "maxLength": 50
            }
          },
          "required": ["message"],
        },
        "examples": [{
            "name": "return",
            "payload": {
              "message": null
            }
          }
        ]
      }

It breaks rendering of the asyncapi spec, validation does not give valid errors and studio.asyncapi.com breaks

Expected result
It works and renders. Note that this works if the message property is renamed or given a non null example value.

Actual result

The following error is given

	Error thrown during AsyncAPI document validation. Name: Error, message: jsonPath: Cannot read properties of null (reading 'schemaFormat'): _$_property === 'message' && _$_v.schemaFormat === void 0, stack: Error: jsonPath: Cannot read properties of null (reading 'schemaFormat'): _$_property === 'message' && _$_v.schemaFormat === void 0 at v._eval (https://studio.asyncapi.com/static/js/main.f7f7093d.js:2:4494941) at https://studio.asyncapi.com/static/js/main.f7f7093d.js:2:4491179 at https://studio.asyncapi.com/static/js/main.f7f7093d.js:2:4493697 at Array.forEach (<anonymous>) at v._walk (https://studio.asyncapi.com/static/js/main.f7f7093d.js:2:4493676) at v._trace (https://studio.asyncapi.com/static/js/main.f7f7093d.js:2:4491130) at v._trace (https://studio.asyncapi.com/static/js/main.f7f7093d.js:2:4490522) at https://studio.asyncapi.com/static/js/main.f7f7093d.js:2:4490621 at https://studio.asyncapi.com/static/js/main.f7f7093d.js:2:4493697 at Array.forEach (<anonymous>)

Steps to reproduce

Paste the following gist into the asyncapi studio
https://gist.github.com/ly29/6b56cc8252ad48ac681f19ea468d540f

Troubleshooting
I have reduced the issue down to one specific property that breaks.

[github-actions]

Welcome to AsyncAPI. Thanks a lot for reporting your first issue. Please check out our contributors guide and the instructions about a basic recommended setup useful for opening a pull request.
Keep in mind there are also other channels you can use to interact with AsyncAPI community. For more details check out this issue.

[derberg]

thanks for the issue,

so basically even though the message type is a tuple of string and null the example with "message": null throws an issue, but if you change to "message": "test" it works fine

this is a validation issue, cannot be fixed in the react component. Moving to parser

[github-actions]

Welcome to AsyncAPI. Thanks a lot for reporting your first issue. Please check out our contributors guide and the instructions about a basic recommended setup useful for opening a pull request.
Keep in mind there are also other channels you can use to interact with AsyncAPI community. For more details check out this issue.

[ly29]

Yeah it was not clear to me where to report, thank you taking care of that.

[ly29]

So this looks like a bug to me. Any pointers to where to fix. Should be a reasonably small fix I imagine...

[jonaslagoni]

Without being 100% sure, I think its

parser-js/src/ruleset/v2/ruleset.ts

Line 119 in 0a765c1

'asyncapi2-message-examples': {

that might be complaining.

[github-actions]

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