[Proposal] Display/Audit Suspense caches

[swyxio]

basically this would be a new tab in the devtools displaying what's inside the caches, giving the author control over key-based invalidation for easier testing and debugging. I'm sure there are more needs we don't even know about yet, but generally the idea is to have a cache-library-agnostic way to hook into caches (so that hopefully we don't all have to install a million other chrome extensions, but also take advantage of unique knowledge about Placeholders that the React Devtools should own).

There's a possibility that every cache library will want to implement their own devtools but that feels duplicative and it's likely to be a hurdle to smaller teams wanting to try writing cache libraries. I feel like the best place for this is with react-devtools, but reasonable people might disagree. Anyway, just raising the idea.

Relevant code:

• pomber/hitchcock: https://github.com/pomber/hitchcock
• suspense fixture: https://github.com/facebook/react/tree/master/fixtures/unstable-async/suspense

[bvaughn]

React DevTools has been rewritten and recently launched a new version 4 UI. The source code for this rewrite was done in a separate repository and now lives in the main React repo (github.com/facebook/react).

Because version 4 was a total rewrite, and all issues in this repository are related to the old version 3 of the extension, I am closing all issues in this repository. If you can still reproduce this issue, or believe this feature request is still relevant, please open a new issue in the React repo: https://github.com/facebook/react/issues/new?labels=Component:%20Developer%20Tools

[swyxio]

sad!

[bvaughn]

You would be 😋