services/flattener library

Classes

FlattenChange

Metadata describing an incremental single-node expand/collapse, so a scroll anchor can preserve position when the change happened above the viewport.

Flattener<T>

Owns the flat-list cache and the incremental-vs-rebuild decision.

FlattenResult<T>

The result of a Flattener.update: the current flat list plus, when the update was an incremental single-node change, its FlattenChange.