Flash5/flash-extensions/flash-web-bundler/docs/routing-fallback.md

Routing Fallback

Fallback policy:

• backend routes always have precedence
• fallback route is wildcard under configured basePath
• fallback applies to GET and HEAD only
• if no static asset matches, serve SPA indexFile

Namespace collisions should be avoided at app design level (for example, keep API under /api).