Add copyright headers and SPDX license info

.eslintrc.json

@@ -1,3 +1,11 @@
 {
-  "extends": ["next/core-web-vitals", "next/typescript"]
+  "extends": ["next/core-web-vitals", "next/typescript"],
+  "plugins": ["header"],
+  "rules": {
+    "header/header": [
+      2,
+      "block",
+      "Copyright The OpenTelemetry Authors\nSPDX-License-Identifier: Apache-2.0"
+    ]
+  }
 }

CLAUDE.md

@@ -0,0 +1,20 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Build Commands
+- `npm run dev` - Start development server
+- `npm run build` - Build for production
+- `npm run start` - Start production server
+- `npm run lint` - Run linting with ESLint
+- Testing: Use `/api/test` endpoint in development mode only
+
+## Code Style Guidelines
+- TypeScript: Strict mode with strictNullChecks enabled
+- ESLint: Extends Next.js core-web-vitals and TypeScript configs
+- Imports: Use absolute imports with `@/` prefix for src directory
+- Components: Use functional React components with TypeScript types
+- Error handling: Use try/catch with specific error types when possible
+- Naming: PascalCase for components, camelCase for functions/variables
+- Styling: Use Tailwind CSS with custom theme extensions
+- State management: Use React hooks (useState, useEffect)

eslint.config.mjs

@@ -0,0 +1,19 @@
+// eslint.config.mjs
+
+import { FlatCompat } from "@eslint/eslintrc";
+import pluginHeader from "eslint-plugin-header";
+
+pluginHeader.rules.header.meta.schema = false;
+
+const compat = new FlatCompat({
+  // import.meta.dirname is available after Node.js v20.11.0
+  baseDirectory: import.meta.dirname,
+});
+
+const eslintConfig = [
+  ...compat.config({
+    extends: ["next", "next/core-web-vitals", "next/typescript"],
+  }),
+];
+
+export default eslintConfig;

package.json

@@ -26,6 +26,7 @@
     "@types/react-dom": "^18",
     "eslint": "^9.0.0",
     "eslint-config-next": "15.3.1",
+    "eslint-plugin-header": "^3.1.1",
     "postcss": "^8",
     "tailwindcss": "^3.4.1",
     "typescript": "^5"

src/app/api/revalidate/route.ts

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import { revalidatePath } from "next/cache";
 import { NextRequest } from "next/server";
 

src/app/api/test/route.ts

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import { saveEntry } from "@/lib/store";
 import { ChangelogEntry } from "@/types/entry";
 

src/app/api/webhook/route.ts

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import { NextRequest } from "next/server";
 import { saveEntry } from "@/lib/store";
 import { ChangelogEntry } from "@/types/entry";

src/app/feed/route.ts

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import { getAllEntries } from "@/lib/store";
 
 export const dynamic = "force-dynamic";

src/app/layout.tsx

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import type { Metadata } from "next";
 import localFont from "next/font/local";
 import "./globals.css";

src/app/page.tsx

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import { getAllEntries } from "@/lib/store";
 import { ChangelogList } from "@/components/list";
 import { TestControls } from "@/components/test-controls";

src/components/changelog-description.tsx

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 "use client";
 
 import { useState } from "react";

src/components/commit-sha.tsx

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 "use client";
 
 interface CommitShaProps {

src/components/filtered-list.tsx

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 "use client";
 
 import { useState, useId } from "react";

src/components/github-username.tsx

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 "use client";
 
 interface GitHubUsernameProps {

src/components/list.tsx

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import { FilteredList } from "./filtered-list";
 import { ChangelogEntry } from "@/types/entry";
 

src/components/test-controls.tsx

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 "use client";
 
 import { useState } from "react";

src/lib/store.ts

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 import { getStore } from "@netlify/blobs";
 import { ChangelogEntry } from "@/types/entry";
 

src/types/entry.ts

@@ -1,3 +1,8 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 export interface ChangelogEntry {
   id: number;
   title: string;

tsconfig.json

@@ -1,6 +1,10 @@
 {
   "compilerOptions": {
-    "lib": ["dom", "dom.iterable", "esnext"],
+    "lib": [
+      "dom",
+      "dom.iterable",
+      "esnext"
+    ],
     "allowJs": true,
     "skipLibCheck": true,
     "strict": true,
@@ -19,9 +23,19 @@
       }
     ],
     "paths": {
-      "@/*": ["./src/*"]
-    }
+      "@/*": [
+        "./src/*"
+      ]
+    },
+    "target": "ES2017"
   },
-  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
-  "exclude": ["node_modules"]
+  "include": [
+    "next-env.d.ts",
+    "**/*.ts",
+    "**/*.tsx",
+    ".next/types/**/*.ts"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
 }