fix: render empty extensions and bindings

[magicmatatjahu]

Description

Changes proposed in this pull request:

Render empty extensions and bindings:

• improve jsonFieldToSchema function to handle null and undefined values.
• add unit tests for helper and also for Bindings and Extensions component

Related issue(s)
Resolves asyncapi/studio#221

[paulRbr]

Ok with this solution, but wdyt about “failing early” in the .map entries?

Something like:

const renderedBindings = Object.entries(bindings).map(
  ([bindingName, binding]) => {
    if (!binding) {
      return null;
    }
    ...

[magicmatatjahu]

@paulRbr It can be done, but in 99.99% of cases there should be no null/undefined, so I gave this comparison at the end using the schema && ... guard :)

[derberg]

we need to start generating studio previews on PRs 😅

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[asyncapi-bot]

🎉 This PR is included in version 1.0.0-next.27 🎉

The release is available on:

• npm package (@next dist-tag)
• GitHub release

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