rstackjs · chenjiahan · Aug 9, 2026 · Aug 9, 2026
diff --git a/packages/create-rstack/README.md b/packages/create-rstack/README.md
@@ -29,6 +29,8 @@ npx create-rstack -d my-project -t app-vanilla-ts
 - `app-preact-ts` - TypeScript Preact application
 - `app-vue-js` - JavaScript Vue application
 - `app-vue-ts` - TypeScript Vue application
+- `app-lit-js` - JavaScript Lit application
+- `app-lit-ts` - TypeScript Lit application
 - `app-svelte-js` - JavaScript Svelte application
 - `app-svelte-ts` - TypeScript Svelte application
 - `app-solid-js` - JavaScript Solid application

diff --git a/packages/create-rstack/src/index.ts b/packages/create-rstack/src/index.ts
@@ -76,6 +76,7 @@ const getTemplateName = async ({ template }: Argv): Promise<string> => {
               { value: 'react', label: 'React' },
               { value: 'preact', label: 'Preact' },
               { value: 'vue', label: 'Vue' },
+              { value: 'lit', label: 'Lit' },
               { value: 'svelte', label: 'Svelte' },
               { value: 'solid', label: 'Solid' },
             ]
@@ -113,6 +114,8 @@ await create({
     'app-preact-ts',
     'app-vue-js',
     'app-vue-ts',
+    'app-lit-js',
+    'app-lit-ts',
     'app-svelte-js',
     'app-svelte-ts',
     'app-solid-js',

diff --git a/packages/create-rstack/template-app-lit-js/AGENTS.md b/packages/create-rstack/template-app-lit-js/AGENTS.md
@@ -0,0 +1,15 @@
+# AGENTS.md
+
+## Commands
+
+- `{{ packageManager }} run dev` - Start the development server
+- `{{ packageManager }} run build` - Build the app for production
+- `{{ packageManager }} run preview` - Preview the production build locally
+- `{{ packageManager }} run test` - Run tests
+- `{{ packageManager }} run test:watch` - Run tests in watch mode
+
+## Docs
+
+- Rsbuild: https://rsbuild.rs/llms.txt
+- Rspack: https://rspack.rs/llms.txt
+- Rstest: https://rstest.rs/llms.txt
diff --git a/packages/create-rstack/template-app-lit-js/package.json b/packages/create-rstack/template-app-lit-js/package.json
@@ -0,0 +1,22 @@
+{
+  "name": "rstack-app-lit-js",
+  "version": "1.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "build": "rs build",
+    "dev": "rs dev",
+    "format": "rs fmt",
+    "lint": "rs lint",
+    "preview": "rs preview",
+    "test": "rs test",
+    "test:watch": "rs test --watch"
+  },
+  "dependencies": {
+    "lit": "^3.3.3"
+  },
+  "devDependencies": {
+    "happy-dom": "^20.11.1",
+    "rstack": "^0.3.5"
+  }
+}
diff --git a/packages/create-rstack/template-app-lit-js/rstack.config.js b/packages/create-rstack/template-app-lit-js/rstack.config.js
@@ -0,0 +1,24 @@
+// @ts-check
+// Rstack configuration guide: https://rstack.rs/config
+import { define } from 'rstack';
+
+define.app({
+  html: {
+    template: './src/index.html',
+  },
+  source: {
+    decorators: {
+      version: 'legacy',
+    },
+  },
+});
+
+define.test({
+  testEnvironment: 'happy-dom',
+});
+
+define.lint(async () => {
+  const { js } = await import('rstack/lint');
+
+  return [js.configs.recommended];
+});
diff --git a/packages/create-rstack/template-app-lit-js/src/index.css b/packages/create-rstack/template-app-lit-js/src/index.css
@@ -0,0 +1,6 @@
+body {
+  margin: 0;
+  color: #fff;
+  font-family: Inter, Avenir, Helvetica, Arial, sans-serif;
+  background-image: linear-gradient(to bottom, #020917, #101725);
+}
diff --git a/packages/create-rstack/template-app-lit-js/src/index.html b/packages/create-rstack/template-app-lit-js/src/index.html
@@ -0,0 +1,7 @@
+<!doctype html>
+<html lang="en">
+  <head></head>
+  <body>
+    <my-element></my-element>
+  </body>
+</html>
diff --git a/packages/create-rstack/template-app-lit-js/src/index.js b/packages/create-rstack/template-app-lit-js/src/index.js
@@ -0,0 +1,4 @@
+import './index.css';
+import { MyElement } from './my-element';
+
+customElements.define('my-element', MyElement);
diff --git a/packages/create-rstack/template-app-lit-js/src/my-element.js b/packages/create-rstack/template-app-lit-js/src/my-element.js
@@ -0,0 +1,34 @@
+import { html, css, LitElement } from 'lit';
+
+export class MyElement extends LitElement {
+  static styles = css`
+    .content {
+      display: flex;
+      min-height: 100vh;
+      line-height: 1.1;
+      text-align: center;
+      flex-direction: column;
+      justify-content: center;
+    }
+
+    .content h1 {
+      font-size: 3.6rem;
+      font-weight: 700;
+    }
+
+    .content p {
+      font-size: 1.2rem;
+      font-weight: 400;
+      opacity: 0.5;
+    }
+  `;
+
+  render() {
+    return html`
+      <div class="content">
+        <h1>Rstack with Lit</h1>
+        <p>Start building amazing things with Rstack.</p>
+      </div>
+    `;
+  }
+}
diff --git a/packages/create-rstack/template-app-lit-js/tests/index.test.js b/packages/create-rstack/template-app-lit-js/tests/index.test.js
@@ -0,0 +1,12 @@
+import { expect, test } from 'rstack/test';
+import { MyElement } from '../src/my-element';
+
+test('renders the main page', async () => {
+  customElements.define('my-element', MyElement);
+  const element = document.createElement('my-element');
+  document.body.append(element);
+
+  await element.updateComplete;
+
+  expect(element.shadowRoot?.textContent).toContain('Rstack with Lit');
+});
diff --git a/packages/create-rstack/template-app-lit-ts/AGENTS.md b/packages/create-rstack/template-app-lit-ts/AGENTS.md
@@ -0,0 +1,15 @@
+# AGENTS.md
+
+## Commands
+
+- `{{ packageManager }} run dev` - Start the development server
+- `{{ packageManager }} run build` - Build the app for production
+- `{{ packageManager }} run preview` - Preview the production build locally
+- `{{ packageManager }} run test` - Run tests
+- `{{ packageManager }} run test:watch` - Run tests in watch mode
+
+## Docs
+
+- Rsbuild: https://rsbuild.rs/llms.txt
+- Rspack: https://rspack.rs/llms.txt
+- Rstest: https://rstest.rs/llms.txt
diff --git a/packages/create-rstack/template-app-lit-ts/package.json b/packages/create-rstack/template-app-lit-ts/package.json
@@ -0,0 +1,24 @@
+{
+  "name": "rstack-app-lit-ts",
+  "version": "1.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "build": "rs build",
+    "dev": "rs dev",
+    "format": "rs fmt",
+    "lint": "rs lint",
+    "preview": "rs preview",
+    "test": "rs test",
+    "test:watch": "rs test --watch"
+  },
+  "dependencies": {
+    "lit": "^3.3.3"
+  },
+  "devDependencies": {
+    "@types/node": "^24.13.3",
+    "happy-dom": "^20.11.1",
+    "rstack": "^0.3.5",
+    "typescript": "^7.0.2"
+  }
+}
diff --git a/packages/create-rstack/template-app-lit-ts/rstack.config.ts b/packages/create-rstack/template-app-lit-ts/rstack.config.ts
@@ -0,0 +1,23 @@
+// Rstack configuration guide: https://rstack.rs/config
+import { define } from 'rstack';
+
+define.app({
+  html: {
+    template: './src/index.html',
+  },
+  source: {
+    decorators: {
+      version: 'legacy',
+    },
+  },
+});
+
+define.test({
+  testEnvironment: 'happy-dom',
+});
+
+define.lint(async () => {
+  const { js, ts } = await import('rstack/lint');
+
+  return [js.configs.recommended, ts.configs.recommended];
+});
diff --git a/packages/create-rstack/template-app-lit-ts/src/index.css b/packages/create-rstack/template-app-lit-ts/src/index.css
@@ -0,0 +1,6 @@
+body {
+  margin: 0;
+  color: #fff;
+  font-family: Inter, Avenir, Helvetica, Arial, sans-serif;
+  background-image: linear-gradient(to bottom, #020917, #101725);
+}
diff --git a/packages/create-rstack/template-app-lit-ts/src/index.html b/packages/create-rstack/template-app-lit-ts/src/index.html
@@ -0,0 +1,7 @@
+<!doctype html>
+<html lang="en">
+  <head></head>
+  <body>
+    <my-element></my-element>
+  </body>
+</html>
diff --git a/packages/create-rstack/template-app-lit-ts/src/index.ts b/packages/create-rstack/template-app-lit-ts/src/index.ts
@@ -0,0 +1,4 @@
+import './index.css';
+import { MyElement } from './my-element';
+
+customElements.define('my-element', MyElement);
diff --git a/packages/create-rstack/template-app-lit-ts/src/my-element.ts b/packages/create-rstack/template-app-lit-ts/src/my-element.ts
@@ -0,0 +1,34 @@
+import { html, css, LitElement } from 'lit';
+
+export class MyElement extends LitElement {
+  static styles = css`
+    .content {
+      display: flex;
+      min-height: 100vh;
+      line-height: 1.1;
+      text-align: center;
+      flex-direction: column;
+      justify-content: center;
+    }
+
+    .content h1 {
+      font-size: 3.6rem;
+      font-weight: 700;
+    }
+
+    .content p {
+      font-size: 1.2rem;
+      font-weight: 400;
+      opacity: 0.5;
+    }
+  `;
+
+  render() {
+    return html`
+      <div class="content">
+        <h1>Rstack with Lit</h1>
+        <p>Start building amazing things with Rstack.</p>
+      </div>
+    `;
+  }
+}
diff --git a/packages/create-rstack/template-app-lit-ts/tests/index.test.ts b/packages/create-rstack/template-app-lit-ts/tests/index.test.ts
@@ -0,0 +1,12 @@
+import { expect, test } from 'rstack/test';
+import { MyElement } from '../src/my-element';
+
+test('renders the main page', async () => {
+  customElements.define('my-element', MyElement);
+  const element = document.createElement('my-element') as MyElement;
+  document.body.append(element);
+
+  await element.updateComplete;
+
+  expect(element.shadowRoot?.textContent).toContain('Rstack with Lit');
+});
diff --git a/packages/create-rstack/template-app-lit-ts/tsconfig.json b/packages/create-rstack/template-app-lit-ts/tsconfig.json
@@ -0,0 +1,23 @@
+{
+  "compilerOptions": {
+    "lib": ["DOM", "ES2020"],
+    "target": "ES2020",
+    "noEmit": true,
+    "skipLibCheck": true,
+    "types": ["rstack/types", "node"],
+    "experimentalDecorators": true,
+    "useDefineForClassFields": false,
+
+    /* modules */
+    "moduleDetection": "force",
+    "moduleResolution": "bundler",
+    "verbatimModuleSyntax": true,
+    "resolveJsonModule": true,
+    "allowImportingTsExtensions": true,
+
+    /* type checking */
+    "noUnusedLocals": true,
+    "noUnusedParameters": true
+  },
+  "include": ["src"]
+}
diff --git a/packages/create-rstack/tests/create.test.ts b/packages/create-rstack/tests/create.test.ts
@@ -89,6 +89,20 @@ test.each([
     testFile: 'index.test.ts',
     hasTypeScript: true,
   },
+  {
+    template: 'app-lit-js',
+    configExtension: 'js',
+    sourceExtension: 'js',
+    testFile: 'index.test.js',
+    hasTypeScript: false,
+  },
+  {
+    template: 'app-lit-ts',
+    configExtension: 'ts',
+    sourceExtension: 'ts',
+    testFile: 'index.test.ts',
+    hasTypeScript: true,
+  },
   {
     template: 'app-svelte-js',
     configExtension: 'js',