Function isRouteHandler

packages/hono/src/shared/resolveRouteName.ts:7–9

(handler: unknown)

// Arity alone is enough here (unlike `wrapSubAppMiddleware` in patchRoute.ts, which also needs position)
// We only want the path, and inline middleware shares its handler's path.
function isRouteHandler(handler: unknown): boolean {
  return typeof handler === 'function' && !isMiddleware(handler);
}

/**
 * Resolves the route path of the matched handler for the transaction name.