feat: add clsx, twMerge and cva to make css easier

package.json

@@ -13,9 +13,12 @@
     "build-storybook": "storybook build"
   },
   "dependencies": {
+    "class-variance-authority": "^0.7.0",
+    "clsx": "^2.1.1",
     "next": "14.2.3",
     "react": "^18",
-    "react-dom": "^18"
+    "react-dom": "^18",
+    "tailwind-merge": "^2.3.0"
   },
   "devDependencies": {
     "@chromatic-com/storybook": "^1.4.0",

src/app/cc/error.tsx

@@ -0,0 +1,32 @@
+'use client'
+
+import { useEffect } from 'react'
+import { Button } from '@/components/button'
+
+const Error = ({
+  error,
+  reset,
+}: {
+  error: Error & { digest?: string }
+  reset: () => void
+}) => {
+  useEffect(() => {
+    // Log the error to an error reporting service
+    console.error(error)
+  }, [error])
+
+  return (
+    <div>
+      <h2>Something went wrong!</h2>
+      <Button
+        label="Try again"
+        onClick={
+          // Attempt to recover by trying to re-render the segment
+          () => reset()
+        }
+      />
+    </div>
+  )
+}
+
+export default Error

src/app/cc/layout.tsx

@@ -0,0 +1,9 @@
+const Layout = ({ children }: React.PropsWithChildren) => {
+  return (
+    <div className="w-full min-h-screen flex flex-col justify-center items-center gap-4">
+      {children}
+    </div>
+  )
+}
+
+export default Layout

src/app/cc/page.tsx

@@ -0,0 +1,32 @@
+'use client'
+
+import React, { Suspense, use } from 'react'
+
+import { fetchData } from '@/app/data'
+import { Button } from '@/components/button'
+import LoadingIndicator from '@/components/loading-indicator'
+import { ResponseOk } from '@/models/interface'
+
+const Message = () => {
+  const data: ResponseOk = use(fetchData('/api/delay'))
+
+  return <div>{data?.message}</div>
+}
+
+const Page = () => {
+  return (
+    <>
+      <h1 className="text-lg font-semibold">Data received during SSR</h1>
+      <Suspense fallback={<LoadingIndicator />}>
+        <Message />
+      </Suspense>
+      <Button
+        label="클릭"
+        className="bg-sky-400"
+        onClick={() => alert('ok!')}
+      />
+    </>
+  )
+}
+
+export default Page

src/app/data.ts

@@ -0,0 +1,37 @@
+import { APIError } from '@/models/interface'
+
+const getDelay = async () => {
+  try {
+    const res = await fetch('http://localhost:3000/api/delay?delay=1000', {
+      headers: {
+        'Content-Type': 'application/json',
+      },
+    })
+
+    const data = await res.json()
+    if (Reflect.has(data, 'ok') && Reflect.has(data, 'message')) return data
+
+    throw new APIError({ name: 'api/delay', message: 'API Error' })
+  } catch (e) {
+    if (e instanceof Error) {
+      return e
+    }
+  }
+}
+
+const getData = async (url: string) => {
+  if (url === '/api/delay') {
+    return getDelay()
+  } else {
+    throw Error('Not implemented')
+  }
+}
+
+let cache = new Map()
+
+export const fetchData = (url: string) => {
+  if (!cache.has(url)) {
+    cache.set(url, getData(url))
+  }
+  return cache.get(url)
+}

src/app/globals.css

@@ -18,12 +18,6 @@
 
 body {
   color: rgb(var(--foreground-rgb));
-  background: linear-gradient(
-      to bottom,
-      transparent,
-      rgb(var(--background-end-rgb))
-    )
-    rgb(var(--background-start-rgb));
 }
 
 @layer utilities {

src/app/page.tsx

@@ -1,113 +1,22 @@
-import Image from "next/image";
+import Link from 'next/link'
 
-export default function Home() {
+const Home = () => {
   return (
-    <main className="flex min-h-screen flex-col items-center justify-between p-24">
-      <div className="z-10 w-full max-w-5xl items-center justify-between font-mono text-sm lg:flex">
-        <p className="fixed left-0 top-0 flex w-full justify-center border-b border-gray-300 bg-gradient-to-b from-zinc-200 pb-6 pt-8 backdrop-blur-2xl dark:border-neutral-800 dark:bg-zinc-800/30 dark:from-inherit lg:static lg:w-auto  lg:rounded-xl lg:border lg:bg-gray-200 lg:p-4 lg:dark:bg-zinc-800/30">
-          Get started by editing&nbsp;
-          <code className="font-mono font-bold">src/app/page.tsx</code>
-        </p>
-        <div className="fixed bottom-0 left-0 flex h-48 w-full items-end justify-center bg-gradient-to-t from-white via-white dark:from-black dark:via-black lg:static lg:size-auto lg:bg-none">
-          <a
-            className="pointer-events-none flex place-items-center gap-2 p-8 lg:pointer-events-auto lg:p-0"
-            href="https://vercel.com?utm_source=create-next-app&utm_medium=appdir-template&utm_campaign=create-next-app"
-            target="_blank"
-            rel="noopener noreferrer"
-          >
-            By{" "}
-            <Image
-              src="/vercel.svg"
-              alt="Vercel Logo"
-              className="dark:invert"
-              width={100}
-              height={24}
-              priority
-            />
-          </a>
-        </div>
-      </div>
-
-      <div className="relative z-[-1] flex place-items-center before:absolute before:h-[300px] before:w-full before:-translate-x-1/2 before:rounded-full before:bg-gradient-radial before:from-white before:to-transparent before:blur-2xl before:content-[''] after:absolute after:-z-20 after:h-[180px] after:w-full after:translate-x-1/3 after:bg-gradient-conic after:from-sky-200 after:via-blue-200 after:blur-2xl after:content-[''] before:dark:bg-gradient-to-br before:dark:from-transparent before:dark:to-blue-700 before:dark:opacity-10 after:dark:from-sky-900 after:dark:via-[#0141ff] after:dark:opacity-40 sm:before:w-[480px] sm:after:w-[240px] before:lg:h-[360px]">
-        <Image
-          className="relative dark:drop-shadow-[0_0_0.3rem_#ffffff70] dark:invert"
-          src="/next.svg"
-          alt="Next.js Logo"
-          width={180}
-          height={37}
-          priority
-        />
-      </div>
-
-      <div className="mb-32 grid text-center lg:mb-0 lg:w-full lg:max-w-5xl lg:grid-cols-4 lg:text-left">
-        <a
-          href="https://nextjs.org/docs?utm_source=create-next-app&utm_medium=appdir-template&utm_campaign=create-next-app"
-          className="group rounded-lg border border-transparent px-5 py-4 transition-colors hover:border-gray-300 hover:bg-gray-100 hover:dark:border-neutral-700 hover:dark:bg-neutral-800/30"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <h2 className="mb-3 text-2xl font-semibold">
-            Docs{" "}
-            <span className="inline-block transition-transform group-hover:translate-x-1 motion-reduce:transform-none">
-              -&gt;
-            </span>
-          </h2>
-          <p className="m-0 max-w-[30ch] text-sm opacity-50">
-            Find in-depth information about Next.js features and API.
-          </p>
-        </a>
-
-        <a
-          href="https://nextjs.org/learn?utm_source=create-next-app&utm_medium=appdir-template-tw&utm_campaign=create-next-app"
-          className="group rounded-lg border border-transparent px-5 py-4 transition-colors hover:border-gray-300 hover:bg-gray-100 hover:dark:border-neutral-700 hover:dark:bg-neutral-800/30"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <h2 className="mb-3 text-2xl font-semibold">
-            Learn{" "}
-            <span className="inline-block transition-transform group-hover:translate-x-1 motion-reduce:transform-none">
-              -&gt;
-            </span>
-          </h2>
-          <p className="m-0 max-w-[30ch] text-sm opacity-50">
-            Learn about Next.js in an interactive course with&nbsp;quizzes!
-          </p>
-        </a>
-
-        <a
-          href="https://vercel.com/templates?framework=next.js&utm_source=create-next-app&utm_medium=appdir-template&utm_campaign=create-next-app"
-          className="group rounded-lg border border-transparent px-5 py-4 transition-colors hover:border-gray-300 hover:bg-gray-100 hover:dark:border-neutral-700 hover:dark:bg-neutral-800/30"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <h2 className="mb-3 text-2xl font-semibold">
-            Templates{" "}
-            <span className="inline-block transition-transform group-hover:translate-x-1 motion-reduce:transform-none">
-              -&gt;
-            </span>
-          </h2>
-          <p className="m-0 max-w-[30ch] text-sm opacity-50">
-            Explore starter templates for Next.js.
-          </p>
-        </a>
-
-        <a
-          href="https://vercel.com/new?utm_source=create-next-app&utm_medium=appdir-template&utm_campaign=create-next-app"
-          className="group rounded-lg border border-transparent px-5 py-4 transition-colors hover:border-gray-300 hover:bg-gray-100 hover:dark:border-neutral-700 hover:dark:bg-neutral-800/30"
-          target="_blank"
-          rel="noopener noreferrer"
-        >
-          <h2 className="mb-3 text-2xl font-semibold">
-            Deploy{" "}
-            <span className="inline-block transition-transform group-hover:translate-x-1 motion-reduce:transform-none">
-              -&gt;
-            </span>
-          </h2>
-          <p className="m-0 max-w-[30ch] text-balance text-sm opacity-50">
-            Instantly deploy your Next.js site to a shareable URL with Vercel.
-          </p>
-        </a>
-      </div>
+    <main className="w-full min-h-screen flex flex-col justify-center items-center">
+      <ul className="list-disc text-xl space-y-4">
+        <li>
+          <Link href="/cc" className="underline hover:text-sky-400">
+            Client Components Example
+          </Link>
+        </li>
+        <li>
+          <Link href="/rsc" className="underline hover:text-sky-400">
+            React Server Components Example
+          </Link>
+        </li>
+      </ul>
     </main>
-  );
+  )
 }
+
+export default Home

src/app/rsc/layout.tsx

@@ -0,0 +1,9 @@
+const Layout = ({ children }: React.PropsWithChildren) => {
+  return (
+    <div className="w-full min-h-screen flex flex-col justify-center items-center gap-4">
+      {children}
+    </div>
+  )
+}
+
+export default Layout

src/app/rsc/page.tsx

@@ -0,0 +1,23 @@
+import { Suspense } from 'react'
+
+import { fetchData } from '@/app/data'
+import { Button } from '@/components/button'
+import LoadingIndicator from '@/components/loading-indicator'
+import { ResponseOk } from '@/models/interface'
+
+const Page = async () => {
+  const data: ResponseOk = await fetchData('/api/delay')
+  const message: string = data.message
+
+  return (
+    <>
+      <h1 className="text-lg font-semibold">Data received during RSC render</h1>
+      <Suspense fallback={<LoadingIndicator />}>
+        <div>{message}</div>
+        <Button variant="secondary" label="아무 일도 일어나지 않는 버튼" />
+      </Suspense>
+    </>
+  )
+}
+
+export default Page