add comments to explain routing logic

packages/wrangler/src/deploy/deploy.ts

@@ -192,13 +192,16 @@ export const validateRoutes = (
 			const components = pattern.split("/");
 
 			if (
+				// = ["route.com"]  bare domains are invalid as it would only match exactly that
 				components.length === 1 ||
+				// = ["route.com",""] as above
 				(components.length === 2 && components[1] === "")
 			) {
 				invalidRoutes[pattern] ??= [];
 				invalidRoutes[pattern].push(
 					`Workers which have static assets must end with a wildcard path. Update the route to end with /*`
 				);
+				// ie it doesn't match exactly "route.com/*" = [route.com, *]
 			} else if (!(components.length === 2 && components[1] === "*")) {
 				invalidRoutes[pattern] ??= [];
 				invalidRoutes[pattern].push(