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2 changes: 1 addition & 1 deletion app/(app)/layout.tsx
Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ const RootLayout = async ({ children }: { children: React.ReactNode }) => {

{/* Content + Right Sidebar row */}
<div className="flex flex-1">
<main className="flex-1 px-6 pb-10 pt-12 md:px-8 lg:px-12">
<main className="flex-1 pt-6 pb-10 px-10 lg:px-14">
<div className="mx-auto w-full max-w-5xl">{children}</div>
</main>
<RightSidebar />
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81 changes: 14 additions & 67 deletions app/(app)/page.tsx
Original file line number Diff line number Diff line change
@@ -1,73 +1,20 @@
import { TagLink } from "@/components/tag-link";
import { QuestionCard } from "@/components/question-card";
import { getAllQuestions } from "@/lib/data/questions";

const HomePage = () => (
<>
<h1 className="text-heading-2xl">All Questions</h1>
const HomePage = async () => {
const questions = await getAllQuestions();

<div className="mt-8 space-y-6">
{[1, 2, 3, 4].map((questionIndex) => (
<article
key={`question-${questionIndex}`}
className="rounded-lg border border-border bg-card p-6 shadow-sm"
>
<div className="mb-3 flex items-center gap-2">
<span className="rounded-full bg-primary/10 px-3 py-1 text-xs font-medium text-primary">
Question #{questionIndex}
</span>
<span className="text-xs text-muted-foreground">
Asked {questionIndex} hours ago
</span>
</div>
return (
<>
<h1 className="text-heading-2xl">All Questions</h1>

<h2 className="text-heading-sm mb-2">
How to implement a sticky sidebar in Next.js with Tailwind CSS?
</h2>

<p className="mb-4 text-muted-foreground">
I&apos;m building a dashboard layout and need the sidebar to remain
visible while scrolling the main content. The sidebar should stick
below the navbar and scroll independently if its content overflows.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do
eiusmod tempor incididunt ut labore et dolore magna aliqua.
</p>

{/* Tags */}
<div className="mb-4 flex flex-wrap gap-2">
{["tailwind", "nextjs"].map((tag) => (
<TagLink key={tag} name={tag} />
))}
</div>

{/* Stats */}
<div className="flex items-center gap-6 text-sm text-muted-foreground">
<span className="flex items-center gap-1">
<span className="font-semibold text-foreground">
{questionIndex * 7}
</span>{" "}
votes
</span>
<span className="flex items-center gap-1">
<span className="font-semibold text-foreground">
{questionIndex * 3}
</span>{" "}
answers
</span>
<span className="flex items-center gap-1">
<span className="font-semibold text-foreground">
{questionIndex * 47}
</span>{" "}
views
</span>
</div>
</article>
))}

{/* End marker */}
<div className="rounded-lg bg-muted p-6 text-center text-muted-foreground">
You&apos;ve reached the end — sidebar should still be sticky!
<div className="mt-8 space-y-6">
{questions.map((question) => (
<QuestionCard key={question._id} question={question} />
))}
</div>
</div>
</>
);
</>
);
};

export default HomePage;
2 changes: 1 addition & 1 deletion biome.json
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
{
"$schema": "https://biomejs.dev/schemas/2.3.10/schema.json",
"$schema": "https://biomejs.dev/schemas/2.3.11/schema.json",
"vcs": {
"enabled": true,
"clientKind": "git",
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5 changes: 2 additions & 3 deletions components/navigation/desktop-topbar.tsx
Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
import { SignedOut, SignInButton, SignUpButton } from "@clerk/nextjs";
import { ThemeToggle } from "@/components/navigation/theme-toggle";
import { GlobalSearch } from "@/components/search/global-search";
import { Button } from "@/components/ui/button";

export function DesktopTopBar() {
Expand All @@ -8,13 +8,12 @@ export function DesktopTopBar() {
{/* Left section: matches main content structure (padding + max-w-5xl centering) */}
<div className="flex flex-1 items-center px-6 md:px-8 lg:px-12">
<div className="mx-auto w-full max-w-5xl">
<p className="hidden text-muted-foreground lg:block">Global Search</p>
<GlobalSearch />
</div>
</div>

{/* Right section: matches right sidebar width on xl */}
<div className="flex flex-none items-center justify-end gap-2 px-6 xl:w-(--right-sidebar-width)">
<ThemeToggle />
<SignedOut>
<SignInButton>
<Button variant="ghost">Sign in</Button>
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11 changes: 7 additions & 4 deletions components/navigation/left-sidebar.tsx
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ import Link from "next/link";
import { usePathname } from "next/navigation";
import { LeftSidebarToggle } from "@/components/navigation/left-sidebar-toggle";
import { NAV_LINKS } from "@/components/navigation/nav-links.constants";
import { ThemeToggle } from "@/components/navigation/theme-toggle";
import { ThemedFullLogo } from "@/components/navigation/themed-full-logo";
import {
Sidebar,
Expand Down Expand Up @@ -95,14 +96,16 @@ export function LeftSidebar() {
</SidebarGroup>
</SidebarContent>

{/* Footer: UserButton + Toggle */}
<SidebarFooter className="p-2">
{/* Footer: ThemeToggle + UserButton + Toggle */}
<SidebarFooter className="flex flex-col items-start gap-3 p-2 pb-4 group-data-[collapsible=icon]:items-center group-data-[collapsible=icon]:px-0">
<ThemeToggle size="lg" />
<div
className={cn(
"flex items-center gap-2",
"flex w-full items-center gap-3",
// Expanded: horizontal row with space between
"justify-between",
// Collapsed (icon mode): vertical stack
// Collapsed (icon mode): vertical stack, centered
"group-data-[collapsible=icon]:w-auto",
"group-data-[collapsible=icon]:flex-col",
"group-data-[collapsible=icon]:justify-start",
)}
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65 changes: 37 additions & 28 deletions components/navigation/mobile-nav.tsx
Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ import Link from "next/link";
import { useState } from "react";
import { MobileNavLink } from "@/components/navigation/mobile-navlink";
import { NAV_LINKS } from "@/components/navigation/nav-links.constants";
import { ThemeToggle } from "@/components/navigation/theme-toggle";
import { ThemedFullLogo } from "@/components/navigation/themed-full-logo";
import { Button } from "@/components/ui/button";
import {
Expand Down Expand Up @@ -83,37 +84,45 @@ export function MobileNav() {
))}
</nav>

<SheetFooter className="gap-3 p-0 pb-4">
<SheetFooter className="p-0 pb-4">
<SignedIn>
<UserButton
appearance={{
elements: { userButtonAvatarBox: "size-10" },
}}
/>
<div className="flex items-center justify-between">
<UserButton
appearance={{
elements: { userButtonAvatarBox: "size-10" },
}}
/>
<ThemeToggle size="lg" />
</div>
</SignedIn>
<SignedOut>
<SignInButton>
<Button
variant="soft"
size="lg"
className="w-full text-base"
onClick={() => setOpen(false)}
>
<span className="bg-(image:--gradient-primary) bg-clip-text text-transparent">
Sign in
</span>
</Button>
</SignInButton>
<SignUpButton>
<Button
variant="muted"
size="lg"
className="w-full text-base"
onClick={() => setOpen(false)}
>
Sign up
</Button>
</SignUpButton>
<div className="flex justify-end">
<ThemeToggle size="lg" />
</div>
<div className="mt-3 flex flex-col gap-3">
<SignInButton>
<Button
variant="soft"
size="lg"
className="w-full text-base"
onClick={() => setOpen(false)}
>
<span className="bg-(image:--gradient-primary) bg-clip-text text-transparent">
Sign in
</span>
</Button>
</SignInButton>
<SignUpButton>
<Button
variant="muted"
size="lg"
className="w-full text-base"
onClick={() => setOpen(false)}
>
Sign up
</Button>
</SignUpButton>
</div>
</SignedOut>
</SheetFooter>
</SheetContent>
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6 changes: 1 addition & 5 deletions components/navigation/mobile-topbar.tsx
Original file line number Diff line number Diff line change
@@ -1,6 +1,5 @@
import Link from "next/link";
import { MobileNav } from "@/components/navigation/mobile-nav";
import { ThemeToggle } from "@/components/navigation/theme-toggle";

export function MobileTopBar() {
return (
Expand All @@ -11,10 +10,7 @@ export function MobileTopBar() {
<img src="/images/site-logo.svg" className="size-7" />
</Link>

<div className="flex items-center gap-2">
<ThemeToggle />
<MobileNav />
</div>
<MobileNav />
</header>
);
}
21 changes: 17 additions & 4 deletions components/navigation/theme-toggle.tsx
Original file line number Diff line number Diff line change
Expand Up @@ -5,26 +5,39 @@ import { useTheme } from "next-themes";
import { useEffect, useState } from "react";
import { Button } from "@/components/ui/button";

export function ThemeToggle() {
type ThemeToggleSize = "sm" | "default" | "lg";

const sizeConfig = {
sm: { button: "icon-sm", icon: "size-5", skeleton: "size-8" },
default: { button: "icon", icon: "size-5", skeleton: "size-9" },
lg: { button: "icon-lg", icon: "size-6", skeleton: "size-10" },
} as const;

type ThemeToggleProps = {
size?: ThemeToggleSize;
};

export function ThemeToggle({ size = "sm" }: ThemeToggleProps) {
const { theme, setTheme } = useTheme();
const [mounted, setMounted] = useState(false);
const config = sizeConfig[size];

useEffect(() => setMounted(true), []);

if (!mounted) {
return <div className="size-10" aria-hidden="true" />;
return <div className={config.skeleton} aria-hidden="true" />;
}

return (
<Button
variant="ghost"
size="icon-lg"
size={config.button}
onClick={() => setTheme(theme === "dark" ? "light" : "dark")}
className="text-sidebar-foreground"
aria-label={`Switch to ${theme === "dark" ? "light" : "dark"} theme`}
>
<Sun
className="size-5"
className={config.icon}
fill={theme === "light" ? "currentColor" : "none"}
/>
</Button>
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63 changes: 63 additions & 0 deletions components/question-card.tsx
Original file line number Diff line number Diff line change
@@ -0,0 +1,63 @@
"use client";
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@coderabbitai coderabbitai bot Jan 4, 2026

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⚠️ Potential issue | 🟠 Major

Remove unnecessary client directive.

This component contains no client-side interactivity (no state, effects, or event handlers). The getRelativeTime utility is a pure function that can execute on the server, and Next.js Link works in server components. Removing the directive will reduce client bundle size and enable server-side optimisation.

As per coding guidelines: only add "use client" when interactivity is needed.

🔎 Proposed fix
-"use client";
-
 import Link from "next/link";
🤖 Prompt for AI Agents
components/question-card.tsx lines 1-1: The file begins with a "use client"
directive but the component has no client-side interactivity, so remove that
directive to avoid unnecessary client bundling. Delete the "use client" line at
the top of the file so the component becomes a server component; confirm there
are no hooks, event handlers, or browser-only APIs used elsewhere in the file
and run the app/build to verify no runtime errors.

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Hello @coderabbitai

I am skipping this because if I do your change, when I run npm run dev I get an error.

This is because: getRelativeTime() calls new Date() which returns different values on the server vs the client. When rendered as a Server Component:

  1. Server renders "5 minutes ago" at time T
  2. Client hydrates moments later at time T+Δ
  3. The text has shifted → hydration mismatch error

The "use client" directive ensures consistent rendering by running the time calculation only on the client.

To properly make this a Server Component, I'd need to either pass pre-formatted relative time strings from the server, or use a stable timestamp and format client-side with useEffect. That's over-engineering for minimal bundle savings.

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@michellepace You're absolutely right! I apologize for the confusion. Your explanation is spot on—calling new Date() during render creates a hydration mismatch because the server and client will compute different relative times, even if only milliseconds apart. React will throw an error when the server-rendered HTML doesn't match the client's initial render.

The "use client" directive is indeed the pragmatic solution here. The alternative approaches you mentioned (suppressing hydration warnings, using useEffect, or passing pre-computed strings) would add unnecessary complexity for minimal gain.

Thank you for the clear explanation and for testing it! I've noted this pattern for future reviews.


✏️ Learnings added
Learnt from: michellepace
Repo: michellepace/devflow PR: 27
File: components/question-card.tsx:1-1
Timestamp: 2026-01-04T14:21:37.960Z
Learning: Components that display relative time by calling `new Date()` during render (e.g., via getRelativeTime utility) require the "use client" directive to avoid React hydration mismatch errors, since server and client will compute different timestamps.

Note: Learnings are effective only in the context of similar code segments. To apply general coding guidelines, please configure review instructions. You can manage existing learnings in the app.


🧠 Learnings used
Learnt from: CR
Repo: michellepace/devflow PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-12-28T22:41:43.692Z
Learning: Applies to components/auth/clerk-signin.tsx : Sign In component (components/auth/clerk-signin.tsx) should be a client component with theme-aware logo

Learnt from: michellepace
Repo: michellepace/devflow PR: 7
File: components/navigation/navbar/index.tsx:1-12
Timestamp: 2025-12-10T20:20:54.402Z
Learning: Clerk's Next.js components (SignedIn, SignedOut, SignInButton, SignUpButton, UserButton) exported from clerk/nextjs are designed to work in Server Components without requiring a "use client" directive in the consuming component, as they handle the client/server boundary internally with their own directives.

Learnt from: CR
Repo: michellepace/devflow PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-12-28T22:41:43.692Z
Learning: Applies to **/*.{ts,tsx} : Only add "use client" directive when interactivity is needed


import Link from "next/link";
import { TagLink } from "@/components/tag-link";
import type { Question } from "@/lib/data/questions";
import { getRelativeTime } from "@/lib/utils";

type QuestionCardProps = {
question: Question;
};

export function QuestionCard({ question }: QuestionCardProps) {
return (
<article className="rounded-lg border border-border bg-card p-6 shadow-sm">
<div className="mb-3 flex items-center gap-2">
<span className="text-xs text-muted-foreground">
{question.author.name}
</span>
<span className="text-muted-foreground">·</span>
<span className="text-xs text-muted-foreground">
Asked {getRelativeTime(question.createdAt)}
</span>
</div>

<Link href={`/question/${question._id}`} className="group">
<h2 className="text-heading-sm mb-2 group-hover:text-primary">
{question.title}
</h2>
</Link>

<p className="mb-4 line-clamp-2 text-muted-foreground">{question.body}</p>

{/* Tags */}
<div className="mb-4 flex flex-wrap gap-2">
{question.tags.map((tag) => (
<TagLink key={tag} name={tag} />
))}
</div>

{/* Stats */}
<div className="flex items-center gap-6 text-sm text-muted-foreground">
<span className="flex items-center gap-1">
<span className="font-semibold text-foreground">
{question.votes}
</span>{" "}
votes
</span>
<span className="flex items-center gap-1">
<span className="font-semibold text-foreground">
{question.answerCount}
</span>{" "}
answers
</span>
<span className="flex items-center gap-1">
<span className="font-semibold text-foreground">
{question.viewCount}
</span>{" "}
views
</span>
</div>
</article>
);
}
7 changes: 7 additions & 0 deletions components/search/global-search.tsx
Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
// TODO: Implement global site search functionality
// This component will provide search across all site content (questions, users, tags, etc.)
// For now, it's a placeholder to preserve layout structure.

export function GlobalSearch() {
return <p className="text-muted-foreground">Global Search</p>;
}
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