v2.12.0

What's New

• Runtime observability — Added correlated runtime diagnostics for better insight into editor performance and behavior.
• Peer dependency guards — Validates package compatibility contracts at release time to prevent integration breaks.
• Custom tracked-change review — Improved API for building custom tracked-change panels with occurrence-specific decision routing and scrollTo targeting.
• Custom content-control panels — Enhanced content-control catalog with demand renewal and passive subscriptions to reduce redundant reads.
• Custom search controls — Expanded search API with separate canReplace and canReplaceAll capabilities, option-aware queries, and better pending-state handling.
• Custom context menus — Improved contextAt API with defensive copying and pin-to-editor scoping.
• Custom toolbar controls — Simplified command state synchronization for custom toolbar implementations.

Performance

• Localized structural edits to conserve pagination across mutations without full recalculation.
• Batched DOM measurement checkpoints to reduce layout thrashing during updates.
• Bounded structural delete planning to prevent expensive upfront calculations.
• Resolved note display text lazily instead of eagerly pre-computing all display values.
• Settled footnote numbering through a bounded plane to avoid cascading renumbering.

Fixes

• Preserve table width when inserting columns instead of scaling cells.
• Support tracked edits on multi-run and previously-edited insertions without losing edit history.
• Preserve deep deletion presentation in tracked-change nesting scenarios.
• Maintain caret position after inline images with word wrapping.
• Import Google Docs nested lists without flattening structure.
• Prevent linked-list deletion errors from being fatal to document state.
• Keep image resize handles from intercepting clicks on following text.
• Recalculate sidebar layout when document width settles to avoid layout stalls.
• Preserve combined tcW/gridSpan width instead of collapsing tables during import.
• Stabilize initial pagination under cold font loading by parsing embedded SFNT metrics instead of relying on browser timing.
• Align Shift+Arrow table range selection with Word's behavior.
• Prevent duplicate tracked changes when rewriting changes programmatically.
• Honor RTL section column order during balancing and import.