Sticky submit bar: show org name + currently viewed stage
Repurpose the previously-empty left side of the floating submit bar. Top line is the org name; secondary line updates as the user scrolls so the currently viewed stage is always visible even after the top-of-form header has scrolled out of sight. IntersectionObserver with a top-biased rootMargin tracks which section is in view; topmost intersecting section wins ties. Submit-state feedback (error / in-flight) still takes priority over the viewing/draft text when active.
This commit is contained in:
Joel Brock
+113
-29
@@ -54,6 +54,10 @@ export function EngagementForm({ config, cid, cs }: EngagementFormProps) {
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const [submitState, setSubmitState] = useState<SubmitStatus>({ kind: "idle" });
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const [draftSavedAt, setDraftSavedAt] = useState<string | null>(null);
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const [draftRestored, setDraftRestored] = useState(false);
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// Section currently in view, updated as the user scrolls. Surfaces in
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// the sticky SubmitBar so the org name + viewed stage remain visible
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// even when the top-of-form header has scrolled out of sight.
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const [viewedSectionId, setViewedSectionId] = useState<string | null>(null);
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const {
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register,
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@@ -158,6 +162,54 @@ export function EngagementForm({ config, cid, cs }: EngagementFormProps) {
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};
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}, [cid, cs, reset, config.stageField]);
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// ── Observe which section is currently being viewed ───────────────────
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// The sticky submit bar mirrors this so the user always knows which org
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// they're on and which stage they're scrolled to, even after the top
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// header has left the viewport. We bias intersection toward the upper
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// 40% of the viewport — once a section's box enters that band, it
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// becomes "viewed"; the topmost intersecting section wins ties.
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useEffect(() => {
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if (load.kind !== "ready") return;
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const els = Array.from(
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document.querySelectorAll<HTMLElement>("[data-section-id]"),
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);
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if (els.length === 0) return;
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const intersecting = new Set<string>();
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const observer = new IntersectionObserver(
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(entries) => {
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for (const entry of entries) {
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const id = entry.target.getAttribute("data-section-id");
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if (!id) continue;
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if (entry.isIntersecting) intersecting.add(id);
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else intersecting.delete(id);
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}
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// Pick the topmost intersecting section (closest to viewport top).
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let bestId: string | null = null;
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let bestDist = Infinity;
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for (const el of els) {
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const id = el.getAttribute("data-section-id");
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if (!id || !intersecting.has(id)) continue;
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const dist = Math.abs(el.getBoundingClientRect().top);
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if (dist < bestDist) {
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bestDist = dist;
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bestId = id;
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}
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}
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if (bestId) setViewedSectionId(bestId);
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},
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{ rootMargin: "0px 0px -60% 0px", threshold: [0, 0.1] },
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);
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for (const el of els) observer.observe(el);
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return () => observer.disconnect();
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}, [load.kind, config.sections]);
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const viewedSectionLabel = useMemo(() => {
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if (!viewedSectionId) return null;
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const s = config.sections.find((x) => x.id === viewedSectionId);
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return s?.label ?? null;
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}, [viewedSectionId, config.sections]);
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// ── Auto-save draft on idle ────────────────────────────────────────────
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// Debounce — save 1.5s after the user stops editing. Uses watch's
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// subscription API so we get notified on every change WITHOUT re-rendering
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@@ -326,7 +378,11 @@ export function EngagementForm({ config, cid, cs }: EngagementFormProps) {
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? sectionsToRender[i + 1].pathwayState
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: undefined;
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return (
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<li key={section.id} className="relative list-none">
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<li
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key={section.id}
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data-section-id={section.id}
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className="relative list-none"
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>
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<MobileStem show={i > 0} state={pathwayState} />
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<RailMarker
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rank={section.rank}
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@@ -353,6 +409,8 @@ export function EngagementForm({ config, cid, cs }: EngagementFormProps) {
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state={submitState}
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isDirty={isDirty}
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draftSavedAt={draftSavedAt}
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orgName={load.data.orgName}
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viewedSectionLabel={viewedSectionLabel}
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/>
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</form>
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);
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@@ -458,32 +516,74 @@ function SubmitBar({
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state,
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isDirty,
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draftSavedAt,
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orgName,
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viewedSectionLabel,
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}: {
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state: SubmitStatus;
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isDirty: boolean;
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draftSavedAt: string | null;
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orgName: string;
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viewedSectionLabel: string | null;
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}) {
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// Build the small secondary line under the org name. Priority:
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// 1. submit feedback (error or in-flight) — most urgent
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// 2. "Viewing: <stage>" when the user has scrolled to a section
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// 3. draft / edit status — falls back when there's no section in view
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// yet (e.g. immediately after load, before any scroll)
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let secondary: React.ReactNode = null;
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if (state.kind === "error") {
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secondary = (
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<p className="truncate text-xs font-medium text-clay-700" role="alert">
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✕ {state.message}
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</p>
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);
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} else if (state.kind === "submitting") {
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secondary = (
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<p className="truncate text-xs text-ink-soft" role="status">
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Saving your check-in…
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</p>
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);
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} else if (viewedSectionLabel) {
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secondary = (
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<p className="truncate text-xs text-ink-mute" aria-live="polite">
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<span className="uppercase tracking-[0.12em]">Viewing:</span>{" "}
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<span className="text-ink-soft">{viewedSectionLabel}</span>
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{isDirty && draftSavedAt && (
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<span className="text-ink-mute"> · saved {formatRelative(draftSavedAt)}</span>
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)}
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</p>
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);
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} else if (isDirty && draftSavedAt) {
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secondary = (
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<p className="truncate text-xs text-ink-mute">
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Draft saved {formatRelative(draftSavedAt)} (locally on this device)
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</p>
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);
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} else if (isDirty) {
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secondary = (
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<p className="truncate text-xs text-ink-mute">
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Editing — your draft will save automatically
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</p>
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);
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} else {
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secondary = null;
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}
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return (
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<div
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className="sticky bottom-3 z-20 flex flex-col gap-3 rounded-lg border border-rule bg-paper/95 px-5 py-4 shadow-[0_-4px_24px_-12px_rgba(60,80,40,0.2)] backdrop-blur sm:flex-row sm:items-center sm:justify-between sm:px-6"
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className="sticky bottom-3 z-20 flex flex-col gap-3 rounded-lg border border-rule bg-paper/95 px-5 py-4 shadow-[0_-4px_24px_-12px_rgba(60,80,40,0.2)] backdrop-blur sm:flex-row sm:items-center sm:justify-between sm:gap-6 sm:px-6"
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style={{ marginBottom: "env(safe-area-inset-bottom)" }}
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>
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<div className="flex flex-col gap-0.5">
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<SubmitFeedback state={state} />
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{state.kind === "idle" && (
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<p className="text-xs text-ink-mute">
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{isDirty
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? draftSavedAt
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? `Draft saved ${formatRelative(draftSavedAt)} (locally on this device)`
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: "Editing — your draft will save automatically"
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: ""}
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<div className="min-w-0 flex-1">
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<p className="truncate font-display text-base font-medium leading-tight text-ink sm:text-lg">
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{orgName}
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</p>
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)}
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{secondary && <div className="mt-0.5">{secondary}</div>}
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</div>
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<button
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type="submit"
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disabled={state.kind === "submitting"}
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className="inline-flex items-center justify-center gap-2 rounded-md bg-leaf-700 px-6 py-2.5 font-medium text-paper transition hover:bg-leaf-800 focus:outline-none focus-visible:ring-2 focus-visible:ring-leaf-500/40 disabled:cursor-not-allowed disabled:bg-ink-mute"
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className="inline-flex shrink-0 items-center justify-center gap-2 rounded-md bg-leaf-700 px-6 py-2.5 font-medium text-paper transition hover:bg-leaf-800 focus:outline-none focus-visible:ring-2 focus-visible:ring-leaf-500/40 disabled:cursor-not-allowed disabled:bg-ink-mute"
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>
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{state.kind === "submitting" ? (
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<>
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@@ -497,22 +597,6 @@ function SubmitBar({
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);
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}
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function SubmitFeedback({ state }: { state: SubmitStatus }) {
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if (state.kind === "submitting")
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return (
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<p className="text-sm text-ink-soft" role="status">
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Saving your check-in…
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</p>
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);
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if (state.kind === "error")
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return (
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<p className="text-sm font-medium text-clay-700" role="alert">
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✕ {state.message}
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</p>
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);
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return null;
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}
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function Spinner() {
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return (
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<svg
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