Performance And Accessibility

Performance and accessibility are first-class runtime concerns in Editora, not post-processing steps.

Performance focus areas

• Debounced input/change pipelines.
• Scoped DOM scanning (viewport-only when feasible).
• Multi-instance isolation to avoid cross-editor work.
• Lightweight plugin selection for bundle control.

Accessibility focus areas

• ARIA roles and aria-* metadata on editable regions.
• Keyboard-first navigation for toolbar and dialogs.
• Command discoverability via labels/tooltips.
• Optional accessibility checker workflows.

Practical tuning

1. Keep plugin lists minimal for each editor context.
2. Use debounced input for analytics/autosave pipelines.
3. Enable viewport-scoped scans for long documents.
4. Validate focus order across toolbar, content, dialogs, and sidebars.

Multi-instance considerations

• Ensure status bar and selection tracking are editor-scoped.
• Keep spellcheck/comments sidebars mounted per instance.
• Avoid global listeners that mutate non-active editors.

API Surface

• Runtime performance config (debounceInputMs, scan options).
• Runtime accessibility config (enableARIA, keyboard navigation, checker hooks).
• Plugin-level keyboard and focus handling contracts.

Config Matrix

Dimension	Option	Impact
Input throughput	debounceInputMs	lower CPU/churn
Large docs	viewportOnlyScan	reduced traversal cost
Assistive tech	enableARIA	improved semantics
Keyboard UX	keyboardNavigation	complete non-pointer workflow
Quality checks	checker	authoring-time a11y feedback

Validation Checklist

• Typing latency remains stable in long documents.
• Keyboard-only users can access all primary editing features.
• Focus trap/escape behavior is correct in modals and side panels.
• Performance and a11y settings behave consistently in React and web component modes.