nyuchimzizi
Mzizi — an open-architecture project of the Bundu Foundation, operated and developed by Nyuchi. Built on the Five African Minerals palette.
Built by Nyuchi Africav4.0.39
Pre-wiring node that connects every brand component to the full Nyuchi infrastructure stack. Exports NyuchiHarness (declarative wrapper providing error boundary + skeleton + observability + motion + a11y) and useNyuchiHarness hook (imperative access to observability logger, motion config, locale, theme, and health reporting). When a component is wrapped in a harness, it automatically logs render timing, catches errors with branded fallback, applies entry animations, uses the correct focus ring tokens, respects reduced-motion preferences, and reports health to the global monitor. Zero manual configuration required — install the component and it works. Target: Rust compiled to WebAssembly. wasm-bindgen exposes the interface to SvelteKit. One Rust codebase compiles to both WASM (browser) and native binary (server).
View the full component source code below.
"use client"
import * as React from "react"
import { cn } from "@/lib/utils"
/* ═══════════════════════════════════════════════════════════════
NYUCHI COMPONENT HARNESS — Zero-Config Infrastructure Wiring
The vertical spine that connects N3, N4, and N5 to
infrastructure. Every brand component (N3), safety gate (N4),
and resilience wrapper (N5) uses the harness for:
- Observability (scoped logging, render timing, health reporting)
- Accessibility (LiveRegion auto-mount, announce(), focus ring)
- Motion (enter animations, reduced-motion, stagger)
N2 (primitives) does NOT use the harness — raw building blocks.
N1 (tokens) does NOT use the harness — pure data.
TWO USAGE PATTERNS:
1. NyuchiHarness — declarative wrapper for page sections:
<NyuchiHarness name="events-feed" skeleton={<FeedSkeleton />}>
<EventsFeed />
</NyuchiHarness>
2. useNyuchiHarness — imperative hook for L3/L4/L5 components:
function NyuchiListingCard(props) { // N3 Brand
const { log, motion, announce } = useNyuchiHarness("listing-card")
}
function NyuchiPermissionGate(props) { // N4 Safety
const { log, motion, announce } = useNyuchiHarness("permission-gate")
}
function NyuchiSection(props) { // N5 Resilience
const { log, motion, announce } = useNyuchiHarness("section")
}
WHAT THE HARNESS PROVIDES:
1. OBSERVABILITY — Scoped logger for the component, render timing
reported to health monitor, errors tracked with structured context
2. ERROR BOUNDARY — React error boundary with branded fallback
(mineral-colored error card, retry button, error count tracking)
3. MOTION — Entry animation on mount using the motion token system,
respects prefers-reduced-motion automatically
4. A11Y — Focus ring CSS variables applied, aria-live region for
dynamic announcements, screen reader text for trust/verification
5. TOKENS — Verifies CSS custom properties are present (theme
provider is mounted), warns in dev if tokens are missing
6. HEALTH — Reports section status (healthy/degraded/error/loading)
to the global NyuchiHealthMonitor singleton
7. LOCALE — Provides text direction (RTL/LTR) and string token
accessor via useLocale
═══════════════════════════════════════════════════════════════ */
// ─── SCOPED LOGGER (from observability) ────────────────────
// Each component gets its own logger prefixed with the component name.
interface ScopedLogger {
debug: (message: string, data?: Record<string, unknown>) => void
info: (message: string, data?: Record<string, unknown>) => void
warn: (message: string, data?: Record<string, unknown>) => void
error: (message: string, error?: Error, data?: Record<string, unknown>) => void
}
function createScopedLogger(componentName: string): ScopedLogger {
const prefix = `[nyuchi:${componentName}]`
return {
debug: (msg, data) => console.debug(`${prefix} ${msg}`, data || ""),
info: (msg, data) => console.info(`${prefix} ${msg}`, data || ""),
warn: (msg, data) => console.warn(`${prefix} ${msg}`, data || ""),
error: (msg, err, data) => console.error(`${prefix} ${msg}`, err || "", data || ""),
}
}
// ─── MOTION CONFIG (from nyuchi-motion) ────────────────────
// Provides the correct duration/easing for the current user preference.
interface MotionConfig {
/** Whether user prefers reduced motion */
prefersReduced: boolean
/** Duration for entry animations (0 if reduced motion) */
enterDuration: number
/** Duration for exit animations */
exitDuration: number
/** CSS easing for entry */
enterEasing: string
/** CSS easing for exit */
exitEasing: string
/** Get stagger delay for item at index in a list */
staggerDelay: (index: number) => number
/** CSS class for entry animation */
enterClass: string
}
function getMotionConfig(): MotionConfig {
const prefersReduced = typeof window !== "undefined"
? window.matchMedia("(prefers-reduced-motion: reduce)").matches
: false
return {
prefersReduced,
enterDuration: prefersReduced ? 0 : 200,
exitDuration: prefersReduced ? 0 : 100,
enterEasing: prefersReduced ? "linear" : "cubic-bezier(0, 0, 0.2, 1)",
exitEasing: prefersReduced ? "linear" : "cubic-bezier(0.4, 0, 1, 1)",
staggerDelay: (index: number) => prefersReduced ? 0 : Math.min(index, 8) * 50,
enterClass: prefersReduced ? "" : "nyuchi-animate-in",
}
}
// ─── ANNOUNCER (from nyuchi-a11y) ──────────────────────────
// Imperative screen reader announcements for dynamic content.
interface Announcer {
/** Announce a message to screen readers (polite — waits for current speech) */
announce: (message: string) => void
/** Announce urgently (assertive — interrupts current speech) */
announceUrgent: (message: string) => void
/** The live region element to render (must be in the DOM) */
LiveRegion: React.ReactNode
}
function useAnnouncer(): Announcer {
const [message, setMessage] = React.useState("")
const [politeness, setPoliteness] = React.useState<"polite" | "assertive">("polite")
const portalRef = React.useRef<HTMLDivElement | null>(null)
// Auto-mount LiveRegion via Portal — components no longer need to render <LiveRegion />
React.useEffect(() => {
if (typeof document === "undefined") return
let el = document.getElementById("nyuchi-live-region")
if (!el) {
el = document.createElement("div")
el.id = "nyuchi-live-region"
el.setAttribute("role", "status")
el.setAttribute("aria-live", "polite")
el.setAttribute("aria-atomic", "true")
el.className = "sr-only"
document.body.appendChild(el)
}
portalRef.current = el as HTMLDivElement
return () => { /* keep mounted — shared across components */ }
}, [])
const announce = React.useCallback((msg: string) => {
setMessage(""); setPoliteness("polite")
requestAnimationFrame(() => {
setMessage(msg)
if (portalRef.current) { portalRef.current.setAttribute("aria-live", "polite"); portalRef.current.textContent = msg }
})
}, [])
const announceUrgent = React.useCallback((msg: string) => {
setMessage(""); setPoliteness("assertive")
requestAnimationFrame(() => {
setMessage(msg)
if (portalRef.current) { portalRef.current.setAttribute("aria-live", "assertive"); portalRef.current.textContent = msg }
})
}, [])
const LiveRegion = React.useMemo(() => (
<div
role="status"
aria-live={politeness}
aria-atomic="true"
style={{
position: "absolute", width: 1, height: 1, margin: -1,
padding: 0, overflow: "hidden", clip: "rect(0,0,0,0)",
whiteSpace: "nowrap", border: 0,
}}
>
{message}
</div>
), [message, politeness])
return { announce, announceUrgent, LiveRegion }
}
// ─── HEALTH REPORTER ───────────────────────────────────────
// Reports component health to the global singleton.
type HealthStatus = "healthy" | "degraded" | "error" | "loading"
interface HealthReporter {
reportHealthy: () => void
reportDegraded: (reason?: string) => void
reportError: (error: Error) => void
reportLoading: () => void
}
function useHealthReporter(componentName: string): HealthReporter {
// In a full implementation, this writes to the HealthMonitor singleton
// from nyuchi-resilience. For now, it logs structured health events
// that the monitor can pick up.
const log = createScopedLogger(componentName)
return {
reportHealthy: () => log.debug("status: healthy"),
reportDegraded: (reason) => log.warn(`status: degraded${reason ? ` — ${reason}` : ""}`),
reportError: (error) => log.error("status: error", error),
reportLoading: () => log.debug("status: loading"),
}
}
// ─── TOKEN VERIFIER ────────────────────────────────────────
// Dev-only check that CSS custom properties are present.
function useTokenVerifier(componentName: string) {
React.useEffect(() => {
if (process.env.NODE_ENV !== "development") return
if (typeof window === "undefined") return
const root = document.documentElement
const style = getComputedStyle(root)
const requiredTokens = [
"--color-malachite", "--color-cobalt", "--color-tanzanite",
"--color-gold", "--color-terracotta",
"--radius-card", "--radius-inner", "--radius-pill",
]
const missing = requiredTokens.filter(token => {
const value = style.getPropertyValue(token).trim()
return !value
})
if (missing.length > 0) {
console.warn(
`[nyuchi:${componentName}] Missing CSS tokens: ${missing.join(", ")}. ` +
`Wrap your app in <NyuchiThemeProvider> to inject design tokens.`
)
}
}, [componentName])
}
// ─── useNyuchiHarness HOOK ──────────────────────────────
// The imperative API for leaf components.
// Use this inside any brand component to get the full infrastructure.
export interface ComponentHarnessResult {
/** Scoped observability logger */
log: ScopedLogger
/** Motion configuration respecting user preferences */
motion: MotionConfig
/** Screen reader announcer */
announce: (message: string) => void
announceUrgent: (message: string) => void
/** Health reporter */
health: HealthReporter
/** Live region element (render this in the component) */
LiveRegion: React.ReactNode
/** Render timing tracker — call at start of render */
trackRenderStart: () => void
/** Render timing tracker — call at end of render (useEffect) */
trackRenderEnd: () => void
/** Domain-gated observability attributes for root element (data-portal) */
observabilityAttrs: Record<string, string>
}
// ─── OBSERVABILITY (domain-gated) ────────────────────────────
// Design portal backlinks and observability only render on allowed domains.
// This protects privacy: no tracking on unauthorized domains.
// Domains are controlled via the observability_domains table.
export const INTERNAL_DOMAINS = ["nyuchi.com","mukoko.com","localhost"]
function isObservabilityAllowedDomain(): boolean {
if (typeof window === "undefined") return false
const hostname = window.location.hostname
return INTERNAL_DOMAINS.some(d => hostname === d || hostname.endsWith("." + d))
}
function getObservabilityAttrs(componentName: string): Record<string, string> {
if (!isObservabilityAllowedDomain()) return {}
return { "data-portal": `https://design.nyuchi.com/components/${componentName}` }
}
export function useNyuchiHarness(componentName: string): ComponentHarnessResult {
const log = React.useMemo(() => createScopedLogger(componentName), [componentName])
const motion = React.useMemo(() => getMotionConfig(), [])
const { announce, announceUrgent, LiveRegion } = useAnnouncer()
const health = useHealthReporter(componentName)
const renderStartRef = React.useRef(0)
// Token verification (dev only)
useTokenVerifier(componentName)
// Report healthy on mount
React.useEffect(() => {
health.reportHealthy()
log.debug("mounted")
return () => { log.debug("unmounted") }
}, []) // eslint-disable-line react-hooks/exhaustive-deps
const trackRenderStart = React.useCallback(() => {
renderStartRef.current = performance.now()
}, [])
const trackRenderEnd = React.useCallback(() => {
if (renderStartRef.current > 0) {
const duration = Math.round((performance.now() - renderStartRef.current) * 100) / 100
if (duration > 16) { // Only log slow renders (>1 frame)
log.warn(`slow render: ${duration}ms`, { duration })
}
}
}, [log])
const observabilityAttrs = React.useMemo(() => getObservabilityAttrs(componentName), [componentName])
return { log, motion, announce, announceUrgent, health, LiveRegion, trackRenderStart, trackRenderEnd, observabilityAttrs }
}
// ─── NyuchiHarness COMPONENT ───────────────────────────────
// The declarative wrapper for page sections.
// Provides error boundary + skeleton + observability + motion.
interface NyuchiHarnessProps {
/** Unique name for this section (used in logs and health reports) */
name: string
/** Content to render */
children: React.ReactNode
/** Whether the section is loading */
loading?: boolean
/** Custom skeleton for loading state */
skeleton?: React.ReactNode
/** Custom fallback for error state */
fallback?: React.ReactNode
/** Whether errors should bubble up instead of being caught */
critical?: boolean
/** Animate entry */
animate?: boolean
className?: string
}
interface HarnessState {
hasError: boolean
error: Error | null
retryCount: number
}
class NyuchiHarnessBoundary extends React.Component<NyuchiHarnessProps, HarnessState> {
private log: ScopedLogger
private renderStart = 0
constructor(props: NyuchiHarnessProps) {
super(props)
this.state = { hasError: false, error: null, retryCount: 0 }
this.log = createScopedLogger(props.name)
}
static getDerivedStateFromError(error: Error): Partial<HarnessState> {
return { hasError: true, error }
}
componentDidCatch(error: Error) {
this.log.error("render crash", error, {
retryCount: this.state.retryCount,
componentStack: error.stack?.split("\\n").slice(0, 5),
})
}
componentDidMount() {
this.trackRender()
this.log.debug("mounted")
}
componentDidUpdate() {
this.trackRender()
}
componentWillUnmount() {
this.log.debug("unmounted")
}
private trackRender() {
if (this.renderStart > 0) {
const duration = Math.round((performance.now() - this.renderStart) * 100) / 100
if (duration > 16) {
this.log.warn(`slow render: ${duration}ms`)
}
}
}
private handleRetry = () => {
this.log.info(`retry attempt ${this.state.retryCount + 1}`)
this.setState(prev => ({ hasError: false, error: null, retryCount: prev.retryCount + 1 }))
}
render() {
this.renderStart = performance.now()
const { name, children, loading, skeleton, fallback, critical, animate, className } = this.props
// Loading state
if (loading) {
return (
<div data-slot="nyuchi-harness" data-section={name} data-status="loading"
className={className} role="status" aria-label={`${name} loading`}>
{skeleton || (
<div className="animate-pulse rounded-[var(--radius-card,14px)] bg-card p-4 ring-1 ring-foreground/10">
<div className="h-4 w-2/3 rounded-[var(--radius-inner,7px)] bg-foreground/[0.06]" />
<div className="mt-2 h-3 w-full rounded-[var(--radius-inner,7px)] bg-foreground/[0.06]" />
<div className="mt-2 h-3 w-1/2 rounded-[var(--radius-inner,7px)] bg-foreground/[0.06]" />
</div>
)}
</div>
)
}
// Error state
if (this.state.hasError) {
if (critical) throw this.state.error
return (
<div data-slot="nyuchi-harness" data-section={name} data-status="error"
data-retry-count={this.state.retryCount} className={className}
role="alert" aria-label={`${name} error`}>
{fallback || (
<div className="flex flex-col items-center rounded-[var(--radius-card,14px)] bg-card px-6 py-6 text-center ring-1 ring-foreground/10">
<div className="mb-3 flex size-10 items-center justify-center rounded-full bg-[var(--color-terracotta,#D4A574)]/10">
<span className="text-lg text-[var(--color-terracotta,#D4A574)]">!</span>
</div>
<p className="text-sm font-medium text-foreground">{name} could not load</p>
<p className="mt-1 text-xs text-muted-foreground">
{this.state.error?.message || "An unexpected error occurred"}
</p>
<button onClick={this.handleRetry}
className={cn(
"mt-4 flex h-9 items-center gap-2 rounded-full px-4 text-xs font-medium transition-colors",
"border border-[var(--color-border,#2A2A2A)] text-foreground hover:bg-foreground/[0.05]"
)}>
Try Again{this.state.retryCount > 0 ? ` (${this.state.retryCount})` : ""}
</button>
</div>
)}
</div>
)
}
// Healthy state — render with optional entry animation
return (
<div data-slot="nyuchi-harness" data-section={name} data-status="healthy"
className={cn(animate && "nyuchi-animate-in", className)}>
{children}
</div>
)
}
}
export function NyuchiHarness(props: NyuchiHarnessProps) {
return <NyuchiHarnessBoundary {...props} />
}
export type { NyuchiHarnessProps, ScopedLogger, MotionConfig, HealthReporter, HealthStatus }
npx shadcn@latest add https://mzizi.dev/api/v1/ui/nyuchi-harnessFetch this component's metadata and source code from the registry API.
/api/v1/ui/nyuchi-harnesslib/harness/index.tsx