Basic error checking

src/site/api/feed.js

@@ -3,14 +3,25 @@ const {fetchUser} = require("../../lib/collectors")
 const {render} = require("pinski/plugins")
 
 module.exports = [
-	{route: `/u/(${constants.external.username_regex})/rss.xml`, methods: ["GET"], code: async ({url, fill}) => {
-		const user = await fetchUser(fill[0])
-		const content = await user.timeline.fetchFeed()
-		const xml = content.xml()
-		return {
-			statusCode: 200,
-			contentType: "application/rss+xml", // see https://stackoverflow.com/questions/595616/what-is-the-correct-mime-type-to-use-for-an-rss-feed
-			content: xml
-		}
+	{route: `/u/(${constants.external.username_regex})/rss.xml`, methods: ["GET"], code: ({fill}) => {
+		return fetchUser(fill[0]).then(async user => {
+			const content = await user.timeline.fetchFeed()
+			const xml = content.xml()
+			return {
+				statusCode: 200,
+				contentType: "application/rss+xml", // see https://stackoverflow.com/questions/595616/what-is-the-correct-mime-type-to-use-for-an-rss-feed
+				content: xml
+			}
+		}).catch(error => {
+			if (error === constants.symbols.NOT_FOUND) {
+				return render(404, "pug/friendlyerror.pug", {
+					statusCode: 404,
+					title: "Not found",
+					message: "This user doesn't exist."
+				})
+			} else {
+				throw error
+			}
+		})
 	}}
 ]