Performance And Accessibility
Performance and accessibility strategy for scalable editing experiences and inclusive UX.
Performance focus areas
- Debounced input/change pipelines.
- Scoped DOM scanning (
viewport-onlywhen 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
- Keep plugin lists minimal for each editor context.
- Use debounced input for analytics/autosave pipelines.
- Enable viewport-scoped scans for long documents.
- 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
| Surface | Type | Notes |
|---|---|---|
performance.debounceInputMs | Runtime config | Reduces high-frequency change churn |
performance.viewportOnlyScan | Runtime config | Limits expensive traversal work for large documents |
accessibility.enableARIA | Runtime config | Enables semantic ARIA metadata |
accessibility.keyboardNavigation | Runtime config | Enables keyboard-first interaction model |
accessibility.checker | Runtime/plugin config | Enables accessibility auditing workflows |
| Plugin keyboard/focus contracts | Plugin API | Ensures dialogs/toolbars stay keyboard accessible |
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.