diff --git a/packages/backend/src/server/web/index.ts b/packages/backend/src/server/web/index.ts
index f79eba64e6..78017f0af7 100644
--- a/packages/backend/src/server/web/index.ts
+++ b/packages/backend/src/server/web/index.ts
@@ -149,7 +149,7 @@ router.get<{ Params: { path: string } }>("/emoji/:path(.*)", async (ctx) => {
 		return;
 	}
 
-	let url = new URL(`${config.mediaProxy || config.url + "/proxy"}/emoji.webp`);
+	const url = new URL(`${config.mediaProxy || `${config.url}/proxy`}/emoji.webp`);
 	// || emoji.originalUrl してるのは後方互換性のため
 	url.searchParams.append("url", emoji.publicUrl || emoji.originalUrl);
 	url.searchParams.append("emoji", "1");
@@ -370,9 +370,7 @@ const getFeed = async (
 };
 
 // As the /@user[.json|.rss|.atom]/sub endpoint is complicated, we will use a regex to switch between them.
-const reUser = new RegExp(
-	"^/@(?<user>[^/]+?)(?:.(?<feed>json|rss|atom)(?:\\?[^/]*)?)?(?:/(?<sub>[^/]+))?$",
-);
+const reUser = /^\/@(?<user>[^\/]+?)(?:.(?<feed>json|rss|atom)(?:\?[^\/]*)?)?(?:\/(?<sub>[^\/]+))?$/;
 router.get(reUser, async (ctx, next) => {
 	const groups = reUser.exec(ctx.originalUrl)?.groups;
 	if (!groups) {
diff --git a/packages/backend/src/server/web/manifest.ts b/packages/backend/src/server/web/manifest.ts
index 19c3b27ad6..d3f4d349bf 100644
--- a/packages/backend/src/server/web/manifest.ts
+++ b/packages/backend/src/server/web/manifest.ts
@@ -5,7 +5,8 @@ import { config } from "@/config.js";
 const manifest = {
 	short_name: "Firefish",
 	name: "Firefish",
-	description: "An open source, decentralized social media platform that's free forever!",
+	description:
+		"An open source, decentralized social media platform that's free forever!",
 	start_url: "/",
 	scope: "/",
 	display: "standalone",
@@ -17,34 +18,34 @@ const manifest = {
 			src: "/static-assets/icons/192.png",
 			sizes: "192x192",
 			type: "image/png",
-			purpose: "any"
+			purpose: "any",
 		},
 		{
 			src: "/static-assets/icons/512.png",
 			sizes: "512x512",
 			type: "image/png",
-			purpose: "any"
+			purpose: "any",
 		},
 		{
 			src: "/static-assets/icons/maskable.png",
 			sizes: "512x512",
 			type: "image/png",
-			purpose: "maskable"
+			purpose: "maskable",
 		},
 		{
 			src: "/static-assets/icons/monochrome.png",
 			sizes: "512x512",
 			type: "image/png",
-			purpose: "monochrome"
-		}
+			purpose: "monochrome",
+		},
 	],
 	share_target: {
 		action: "/share/",
 		params: {
 			title: "title",
 			text: "text",
-			url: "url"
-		}
+			url: "url",
+		},
 	},
 	screenshots: [
 		{
@@ -52,28 +53,28 @@ const manifest = {
 			sizes: "1080x2340",
 			type: "image/webp",
 			platform: "narrow",
-			label: "Profile page"
+			label: "Profile page",
 		},
 		{
 			src: "/static-assets/screenshots/2.webp",
 			sizes: "1080x2340",
 			type: "image/webp",
 			platform: "narrow",
-			label: "Posts"
-		}
+			label: "Posts",
+		},
 	],
 	shortcuts: [
 		{
 			name: "Notifications",
 			short_name: "Notifs",
-			url: "/my/notifications"
+			url: "/my/notifications",
 		},
 		{
 			name: "Chats",
-			url: "/my/messaging"
-		}
+			url: "/my/messaging",
+		},
 	],
-	categories: ["social"]
+	categories: ["social"],
 };
 
 export const manifestHandler = async (ctx: Koa.Context) => {