Add express bun example (#1277)

Co-authored-by: Tom Lienard <[email protected]>

Author: jeffsee55

framework-boilerplates/express-bun/.gitignore

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+# dev
+.yarn/
+!.yarn/releases
+.vscode/*
+!.vscode/launch.json
+!.vscode/*.code-snippets
+.idea/workspace.xml
+.idea/usage.statistics.xml
+.idea/shelf
+
+# deps
+node_modules/
+
+# env
+.env
+.env.production
+
+# logs
+logs/
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+# misc
+.DS_Store
+.vercel

framework-boilerplates/express-bun/README.md

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+To develop locally:
+
+```
+bun install
+vc dev
+```
+
+```
+open http://localhost:3000
+```
+
+To build locally:
+
+```
+npm install
+vc build
+```
+
+To deploy:
+
+```
+npm install
+vc deploy
+```

framework-boilerplates/express-bun/bun.lock

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+{
+  "name": "express",
+  "type": "module",
+  "dependencies": {
+    "express": "5.1.0"
+  },
+  "devDependencies": {
+    "@types/express": "5.0.0",
+    "@types/bun": "1.3.1",
+    "typescript": "5.8.3"
+  }
+}

framework-boilerplates/express-bun/package.json

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+import express from 'express'
+
+const app = express()
+
+const runtime = typeof globalThis.Bun !== 'undefined' ? 'bun' : 'node'
+
+app.get('/', (_req, res) => {
+  res.send(`Hello from ${runtime}!`)
+})
+
+app.get('/api/users/:id', (_req, res) => {
+  res.json({ id: _req.params.id })
+})
+
+app.get('/api/posts/:postId/comments/:commentId', (_req, res) => {
+  res.json({ postId: _req.params.postId, commentId: _req.params.commentId })
+})
+
+export default app

framework-boilerplates/express-bun/src/index.ts

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+{
+  "compilerOptions": {
+    "target": "ESNext",
+    "module": "NodeNext",
+    "skipLibCheck": true,
+    "types": ["bun"]
+  },
+  "exclude": ["node_modules"]
+}

framework-boilerplates/express-bun/tsconfig.json

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+{
+  "bunVersion": "1.x"
+}