2/2 automatically generate and render breadcrumbs in dashboard with Next.js /[tenantId]/@breadcrumbs/[...slug]/page.tsx parallel route
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🦋 Changeset detectedLatest commit: cc43fe8 The changes in this PR will be included in the next version bump. This PR includes changesets to release 9 packages
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dimaMachina
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/[tenantId]/@breadcrumbs/[...slug]/page.tsx parallel route/[tenantId]/@breadcrumbs/[...slug]/page.tsx parallel route
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Claude finished @dimaMachina's task —— View job Comprehensive TypeScript Staff Engineer ReviewThis PR implements an automated breadcrumb system using Next.js parallel routes ( Key Architecture Changes ✨Parallel Route Implementation: The new Route-Based Automation: Instead of manually passing breadcrumb props, the system automatically infers navigation context from the URL path - a more maintainable approach. 🔴 Critical Architecture & Design Issues1. Performance & Error Handling ConcernsLocation: for (const [index, segment] of slug.entries()) {
let label: string | undefined;
try {
// Multiple async fetches happen sequentially in a loop
label = fetcher ? await fetcher(segment) : getStaticLabel(segment);
} catch (error) {
// Error breaks the entire breadcrumb chain
break;
}
}Issues:
Recommendation: Parallelize fetches and implement graceful degradation: // Collect all fetchers first, then run in parallel
const fetchPromises = segments.map((segment, idx) => {
const fetcher = getFetcher(segments[idx - 1]);
return fetcher ? fetcher(segment).catch(() => segment) : Promise.resolve(getStaticLabel(segment));
});
const labels = await Promise.allSettled(fetchPromises);2. Type Safety & Route ValidationLocation: const BreadcrumbSlot: FC<PageProps<'/[tenantId]/[...slug]'>> = async ({ params }) => {Issues:
Recommendation: Implement proper type definitions and route validation: type ValidRouteSegments = 'projects' | 'agents' | 'credentials' | ...;
type BreadcrumbRoute = `/[tenantId]/${ValidRouteSegments}/[...segments]`;3. Error State ManagementLocation: catch (error) {
const errorCode = getErrorCode(error);
const resolvedStatusCode = getStatusCodeFromErrorCode(errorCode);
label = resolvedStatusCode ? `${resolvedStatusCode} Error` : 'Error';
addCrumb({ segment, label });
break; // stop traversing if error occurs
}Issues:
🟡 Code Quality & Best Practices4. Hardcoded Route LogicLocation: // This route isn't exist so we don't add it to crumbs list
if (href !== `/${tenantId}/projects/${projectId}/traces/conversations`) {
crumbs.push({ label, href });
}Issues:
5. Mixed Async/Sync PatternLocation: const fetcher = Object.hasOwn(fetchers, prev)
? fetchers[prev as keyof typeof fetchers]
: undefined;
label = fetcher ? await fetcher(segment) : getStaticLabel(segment);Issues:
🟢 Positive Architectural Decisions6. Parallel Route PatternThe choice to use Next.js parallel routes is excellent:
7. Centralized Label ManagementLocation: export const STATIC_LABELS = Object.freeze({
projects: 'Projects',
agents: 'Agents',
// ... other labels
});✅ Good pattern for i18n preparation and consistency 8. Layout IntegrationLocation: The layout properly receives and renders the 🔵 System Design Considerations9. Scalability ConcernsCurrent Issues:
Recommendations:
10. Consistency with Existing PatternsGood Alignment:
Areas for Improvement:
🔧 Recommended Action ItemsHigh Priority
Medium Priority
Low Priority
📊 Customer Impact AssessmentPositive Impact:
Potential Risks:
This is a solid architectural improvement that modernizes breadcrumb management. The parallel route pattern is the right approach, but the implementation needs refinement around performance optimization and error resilience. The core concept is excellent - focus on addressing the sequential API calls and error handling patterns to make this production-ready. |
| let label: string | undefined; | ||
| try { | ||
| const prev = slug[index - 1]; | ||
| // this condition is needed until we remove all `/[segment]/new` routes |
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| // this condition is needed until we remove all `/[segment]/new` routes |
I think this comment is no longer relevant, since we'll keep /new routes, right @sarah-inkeep ?
| const AgentLoading: FC = () => { | ||
| return ( | ||
| <div className="flex p-4"> | ||
| <div className="flex p-4 no-container"> |
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| <div className="flex p-4 no-container"> | |
| <div className="flex p-4 no-container"> |
maybe better class name will be no-parent-container ?
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