Module node_data 

Per-node layout data — stored in Document’s parallel storage.

The DOM IS the layout tree. Each node stores its own Taffy style, cache, and layout results. No separate LayoutTree needed.

Chrome equivalent: LayoutObject’s per-node layout state, but stored as a parallel column rather than a separate tree.

Lifecycle

• Created in Document::alloc_node() with defaults.
• Style synced from ComputedValues → taffy::Style after restyle.
• Cache cleared on style/content changes, propagated to ancestors.
• Cleared in Document::destroy_node().

Structs

LayoutNodeData

Per-node layout data stored directly on the DOM node.