Vercel構成ファイル (vercel.json) ビルダー

{
  "$schema": "https://openapi.vercel.sh/vercel.json",
  "cleanUrls": true,
  "trailingSlash": false,
  "framework": "nextjs",
  "regions": [
    "iad1"
  ],
  "rewrites": [
    {
      "source": "/api/proxy/:path*",
      "destination": "https://backend-api.example.com/:path*"
    }
  ],
  "redirects": [
    {
      "source": "/old-blog/:slug",
      "destination": "/blog/:slug",
      "statusCode": 308
    }
  ],
  "headers": [
    {
      "source": "/(.*)",
      "headers": [
        {
          "key": "X-Content-Type-Options",
          "value": "nosniff"
        },
        {
          "key": "X-Frame-Options",
          "value": "DENY"
        },
        {
          "key": "Referrer-Policy",
          "value": "strict-origin-when-cross-origin"
        },
        {
          "key": "Strict-Transport-Security",
          "value": "max-age=63072000; includeSubDomains; preload"
        }
      ]
    }
  ],
  "crons": [
    {
      "path": "/api/cron/nightly-sync",
      "schedule": "0 4 * * *"
    }
  ],
  "functions": {
    "api/**/*.ts": {
      "runtime": "nodejs20.x",
      "memory": 1024,
      "maxDuration": 60
    }
  }
}