lit · augustjk · Apr 24, 2024 · Mar 8, 2024 · Mar 8, 2024 · Mar 8, 2024
@@ -1,4 +1,4 @@
-# @lit-examples/nextjs
+# @lit-examples/nextjs-v13
 
 ## 0.1.1
 

@@ -1,5 +1,5 @@
 {
-  "name": "@lit-examples/nextjs",
+  "name": "@lit-examples/nextjs-v13",
   "version": "0.1.1",
   "private": true,
   "scripts": {

@@ -0,0 +1,4 @@
+{
+  "root": true,
+  "extends": "next/core-web-vitals"
+}
@@ -0,0 +1,40 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.pnpm-debug.log*
+
+# local env files
+.env*.local
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts
+
+# Internal package links in lockfile will go out of date often.
+# External dependency versions are pinned in package.json instead.
+package-lock.json
@@ -0,0 +1,9 @@
+# Lit in Next.js example
+
+This is a barebones demonstration of a Web Component authored with Lit working
+in a Next.js project with the App Router. You can also see an example of `@lit/react` usage.
+
+It uses the plugin from `@lit-labs/nextjs` to enable deep server rendering of
+Lit components.
+
+Note: Both bare custom elements and `@lit/react` wrapped components are placed in files with the `'use client';` directive. Deeply server rendering Lit components with declarative shadow DOM is not supported in React Server Components as React Flight server rendered data will contain the `<template>` element causing React hydration errors, and custom element definitions will not get included with client bundle.
@@ -0,0 +1,52 @@
+.container {
+  padding: 0 2rem;
+}
+
+.main {
+  min-height: 100vh;
+  padding: 4rem 0;
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+}
+
+.title a {
+  color: #0070f3;
+  text-decoration: none;
+}
+
+.title a:hover,
+.title a:focus,
+.title a:active {
+  text-decoration: underline;
+}
+
+.title {
+  margin: 0;
+  line-height: 1.15;
+  font-size: 4rem;
+}
+
+.title,
+.description {
+  text-align: center;
+}
+
+.description {
+  margin: 4rem 0;
+  line-height: 1.5;
+  font-size: 1.5rem;
+}
+
+.description a {
+  color: #0070f3;
+  text-decoration: none;
+}
+
+.description a:hover,
+.description a:focus,
+.description a:active {
+  text-decoration: underline;
+}
@@ -0,0 +1,14 @@
+import '../styles/globals.css';
+import type {Metadata} from 'next';
+
+export const metadata: Metadata = {
+  title: 'Lit in Next.js App Router',
+};
+
+export default function RootLayout({children}: {children: React.ReactNode}) {
+  return (
+    <html lang="en">
+      <body>{children}</body>
+    </html>
+  );
+}
@@ -0,0 +1,27 @@
+import styles from './Home.module.css';
+import SimpleGreeter from './simple-greeter';
+import SimpleGreeterReact from '../src/simple-greeter-react';
+
+export default function Home() {
+  return (
+    <div className={styles.container}>
+      <main className={styles.main}>
+        <h1 className={styles.title}>
+          Welcome to <a href="https://lit.dev">Lit</a> and{' '}
+          <a href="https://nextjs.org">Next.js!</a>
+        </h1>
+        <p className={styles.description}>
+          The component below is a web component #builtWithLit
+        </p>
+        <SimpleGreeter name="Friend" />
+        <p className={styles.description}>
+          The component below is a component wrapped with{' '}
+          <a href="https://github.com/lit/lit/tree/main/packages/labs/react">
+            <code>@lit-labs/react</code>
+          </a>
+        </p>
+        <SimpleGreeterReact name="React" />
+      </main>
+    </div>
+  );
+}
@@ -0,0 +1,7 @@
+'use client';
+
+import '../src/simple-greeter';
+
+export default function SimpleGreeter(props: any) {
+  return <simple-greeter {...props} />;
+}
@@ -0,0 +1,11 @@
+const withLitSSR = require('@lit-labs/nextjs')({
+  addDeclarativeShadowDomPolyfill: true,
+});
+
+/** @type {import('next').NextConfig} */
+const nextConfig = {
+  reactStrictMode: true,
+  swcMinify: true,
+};
+
+module.exports = withLitSSR(nextConfig);
@@ -0,0 +1,25 @@
+{
+  "name": "@lit-examples/nextjs-v14-app",
+  "version": "0.0.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "next lint"
+  },
+  "dependencies": {
+    "@lit-labs/nextjs": "^0.1.2",
+    "@lit/react": "^1.0.0",
+    "@types/node": "^18.11.11",
+    "@types/react": "^18.0.26",
+    "@types/react-dom": "^18.0.9",
+    "eslint": "^8.29.0",
+    "eslint-config-next": "^13.0.6",
+    "lit": "^3.0.0",
+    "next": "^14.1.0",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "typescript": "~5.3.3"
+  }
+}
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2023 Google LLC
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+import {LitElement, html} from 'lit';
+import {customElement, property} from 'lit/decorators.js';
+
+@customElement('count-display')
+export class CountDisplay extends LitElement {
+  @property({type: Number})
+  count = 0;
+  render() {
+    return html`<p>Count: ${this.count}</p>`;
+  }
+}
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2022 Google LLC
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+'use client';
+
+import React from 'react';
+import {createComponent} from '@lit/react';
+import {SimpleGreeter} from './simple-greeter';
+
+export default createComponent({
+  react: React,
+  tagName: 'simple-greeter',
+  elementClass: SimpleGreeter,
+});
@@ -0,0 +1,70 @@
+/**
+ * @license
+ * Copyright 2022 Google LLC
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+import {LitElement, html, css} from 'lit';
+import {customElement, property} from 'lit/decorators.js';
+import type React from 'react';
+import './count-display';
+
+@customElement('simple-greeter')
+export class SimpleGreeter extends LitElement {
+  static styles = css`
+    div {
+      border: 1px solid black;
+      padding: 1rem;
+      display: flex;
+      flex-direction: column;
+      align-items: center;
+    }
+
+    @media (prefers-color-scheme: dark) {
+      div {
+        border-color: white;
+      }
+    }
+
+    span {
+      color: rebeccapurple;
+    }
+
+    p {
+      font-family: sans-serif;
+    }
+  `;
+
+  @property()
+  name = 'Somebody';
+
+  @property({type: Number})
+  count = 0;
+
+  render() {
+    return html`
+      <div>
+        <h1>Hello, <span>${this.name}</span>!</h1>
+        <count-display .count=${this.count}></count-display>
+        <button @click=${() => this.count++}>++</button>
+      </div>
+    `;
+  }
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    'simple-greeter': SimpleGreeter;
+  }
+
+  namespace JSX {
+    interface IntrinsicElements {
+      'simple-greeter':
+        | React.DetailedHTMLProps<
+            React.HTMLAttributes<SimpleGreeter>,
+            SimpleGreeter
+          >
+        | Partial<SimpleGreeter>;
+    }
+  }
+}
@@ -0,0 +1,26 @@
+html,
+body {
+  padding: 0;
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen,
+    Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
+}
+
+a {
+  color: inherit;
+  text-decoration: none;
+}
+
+* {
+  box-sizing: border-box;
+}
+
+@media (prefers-color-scheme: dark) {
+  html {
+    color-scheme: dark;
+  }
+  body {
+    color: white;
+    background: black;
+  }
+}
@@ -0,0 +1,27 @@
+{
+  "compilerOptions": {
+    "target": "es2021",
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "preserve",
+    "incremental": true,
+    "experimentalDecorators": true,
+    "useDefineForClassFields": false,
+    "plugins": [
+      {
+        "name": "next"
+      }
+    ]
+  },
+  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
+  "exclude": ["node_modules"]
+}
@@ -0,0 +1,4 @@
+{
+  "root": true,
+  "extends": "next/core-web-vitals"
+}