Summary & Key Takeaways ​

• Defines when a write becomes visible at flush, ensuring consistent behavior across channels.
• Clarifies that setOptimistic(v) becomes the active override at the carrying flush.
• Rewrites a node held by a transaction to keep the staged value for latest() until the next flush.
• Corrects documentation for until() within actions, requiring a yield after await before creating readers.
• Ensures an async memo's held landing retains the committed frame's dependencies.

Our Commentary ​

Reactivity is the heart of SolidJS, so any changes here are worth noting. The clarification around optimistic writes and async memos feels like a necessary step towards a more predictable and robust system. I'm glad they're tightening up these core behaviors, even if it means a few doc corrections. It makes the mental model more solid.