Functional coverage against Material UI
A function-level benchmark, verified features and concrete remaining gaps using Faye UI’s own implementation.
Functional benchmark
Faye UI uses its own implementation. The benchmark is the functions an application can deliver: selection, fields, feedback, overlays, navigation, layout, themes and transitions. Matching Material styling or prop names is not required.
Current coverage
The functional audit reviewed 58 official component-guide pages from Material UI 9.5.0. Faye UI has implementations for all reviewed families, with public modular imports from one package. Broad coverage is not a declaration of complete functional parity.
Notifications now support semantic types, actions, six placements, timeout/pause, visible limits, keyboard dismissal and transitions. Shared fields cover persistent labels, hints/errors, adornments, validation and autosizing. Cards/lists/media, progress modes, four-edge dialogs/drawers, grouped actions, steppers, tabs, responsive layouts and motion have concrete implementations and behavioral examples. See feedback, advanced fields, surface compositions, interactive consumer experience and motion.
Completed reference functions
The follow-up implementation closes the eight ordinary core compositions and additional MUI Lab timeline layout identified by the audit. See consumer interactions and navigation for the APIs, working examples and behavior boundaries.
| Function | Faye UI implementation |
|---|---|
| Named marks, restricted nonuniform values and nonlinear scales | Slider.Marks, Slider.DiscreteRoot, scale and formatValue |
| FIFO notifications after exit and optional click-away | useToastQueue and Toaster.dismissOnClickAway |
| Persistent/content-pushing and mini navigation | NavigationDrawer, with a responsive modal sheet |
| Hidden breadcrumb path expansion | CollapsedBreadcrumbs with Menu links and focus return |
| Scroll-aware navigation | useScrollTrigger, ScrollAppBar, reduced-motion back-to-top |
| Controlled, hover and directional quick actions | FloatingActions with configurable trigger and popup parts |
| Touch long-press tooltip activation | TouchTooltip, preserving normal tap behavior |
| All badge corners and circular overlap | BadgeIndicator position and overlap variants |
| Alternating and opposite-content timelines | Timeline position and TimelineItem.opposite |
Dialog, drawer, popover, swipe drawer and notification dismiss controls now default to localized icon buttons. Explicit text/content/render overrides remain available. Functional parity refers to delivered behavior within this reviewed scope; matching APIs or artwork is unnecessary. Qualification results are recorded separately from the implementation ledger.
Themes and customization
The theme system supports semantic accent, secondary, information, success, warning and danger palettes; light/dark/system, brands, density, typography, spacing, shape, elevation, motion, nested scopes, RTL and additional named axes. Customization covers per-part profiles, variants and component defaults. Theme studio uses the actual contract/compiler.
Specialist grids, charts, advanced date/time, virtualization, rich text and data engines remain separate extension scope. These boundaries do not waive missing ordinary UI functions. Tests and verification describe executed coverage; universal accessibility or device certification is not claimed.