Docs - sample code updates needed?

There seems to be confusion on how to write class components in the docs. Using this as a starting point for other pages which may need to be updated.

There is a mixture of function declaration and class components in the docs which can be confusing as when someone may want or need to use either method. Since the release of hooks, the docs should have a new site version release (similar to how Babel has site versions) with the updated, preferred way to write components backed by the core team.

in CONTRIBUTING.md, it shows that you should write classes with a constructor, but the Blog post titled "Update on Async Rendering" seems to prefer the former method of writing components.

Can this be solidified and added to the docs where necessary? Will there be a need to have a new site version with focus on function declaration components?

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Start by comparing the class-component guidance in CONTRIBUTING.md with the "Update on Async Rendering" blog post, then inventory the affected documentation pages. Confirm the core team's preferred guidance and whether a new site version is needed; the work is done when the guidance and necessary examples are consistently updated.