From 7730cd1c5b1fd452c06f381c350641f6d0b27714 Mon Sep 17 00:00:00 2001
From: Sline <realakayuki@gmail.com>
Date: Sun, 8 Feb 2026 13:19:41 +0800
Subject: [PATCH] refactor: fix eslint `no-useless-assignment`
 `preserve-caught-error` (#6276)

---
 src/components/layout/traffic-graph.tsx         |  7 +------
 .../profile/proxies-editor-viewer.tsx           |  2 +-
 src/services/delay.ts                           | 17 ++++++++---------
 src/services/i18n.ts                            |  1 +
 src/utils/uri-parser/vless.ts                   |  2 +-
 5 files changed, 12 insertions(+), 17 deletions(-)

diff --git a/src/components/layout/traffic-graph.tsx b/src/components/layout/traffic-graph.tsx
index 6fdd2a306..1266309a8 100644
--- a/src/components/layout/traffic-graph.tsx
+++ b/src/components/layout/traffic-graph.tsx
@@ -107,10 +107,7 @@ export function TrafficGraph({ ref }: { ref?: Ref<TrafficRef> }) {
         countY(y),
       ]);
 
-      let x = points[0][0];
-      let y = points[0][1];
-
-      context.moveTo(x, y);
+      context.moveTo(points[0][0], points[0][1]);
 
       for (let i = 1; i < points.length; i++) {
         const p1 = points[i];
@@ -120,8 +117,6 @@ export function TrafficGraph({ ref }: { ref?: Ref<TrafficRef> }) {
         const y1 = (p1[1] + p2[1]) / 2;
 
         context.quadraticCurveTo(p1[0], p1[1], x1, y1);
-        x = x1;
-        y = y1;
       }
     };
 
diff --git a/src/components/profile/proxies-editor-viewer.tsx b/src/components/profile/proxies-editor-viewer.tsx
index bc655ea7a..0dd673022 100644
--- a/src/components/profile/proxies-editor-viewer.tsx
+++ b/src/components/profile/proxies-editor-viewer.tsx
@@ -141,7 +141,7 @@ export const ProxiesEditorViewer = (props: Props) => {
   const handleParseAsync = (cb: (proxies: IProxyConfig[]) => void) => {
     const proxies: IProxyConfig[] = [];
     const names: string[] = [];
-    let uris = "";
+    let uris: string;
     try {
       uris = atob(proxyUri);
     } catch {
diff --git a/src/services/delay.ts b/src/services/delay.ts
index 4a8654d3e..9cd252fd2 100644
--- a/src/services/delay.ts
+++ b/src/services/delay.ts
@@ -221,9 +221,6 @@ class DelayManager {
     // 先将状态设置为测试中
     this.setDelay(name, group, -2);
 
-    let delay = -1;
-    let elapsed = 0;
-
     const startTime = Date.now();
 
     try {
@@ -247,18 +244,20 @@ class DelayManager {
         await new Promise((resolve) => setTimeout(resolve, 500 - elapsedTime));
       }
 
-      delay = result.delay;
-      elapsed = elapsedTime;
+      const delay = result.delay;
+      const elapsed = elapsedTime;
       debugLog(`[DelayManager] 延迟测试完成，代理: ${name}, 结果: ${delay}ms`);
+
+      return this.setDelay(name, group, delay, { elapsed });
     } catch (error) {
       // 确保至少显示500ms的加载动画
       await new Promise((resolve) => setTimeout(resolve, 500));
       console.error(`[DelayManager] 延迟测试出错，代理: ${name}`, error);
-      delay = 1e6; // error
-      elapsed = Date.now() - startTime;
-    }
+      const delay = 1e6; // error
+      const elapsed = Date.now() - startTime;
 
-    return this.setDelay(name, group, delay, { elapsed });
+      return this.setDelay(name, group, delay, { elapsed });
+    }
   }
 
   async checkListDelay(
diff --git a/src/services/i18n.ts b/src/services/i18n.ts
index eb7ae4408..f3b1d38b4 100644
--- a/src/services/i18n.ts
+++ b/src/services/i18n.ts
@@ -118,6 +118,7 @@ export const loadLanguage = async (language: string) => {
       if (!fallbackLoader) {
         throw new Error(
           `Fallback language "${FALLBACK_LANGUAGE}" resources are missing.`,
+          { cause: error },
         );
       }
       const fallback = await fallbackLoader();
diff --git a/src/utils/uri-parser/vless.ts b/src/utils/uri-parser/vless.ts
index 1137bfcef..2ae8abb08 100644
--- a/src/utils/uri-parser/vless.ts
+++ b/src/utils/uri-parser/vless.ts
@@ -120,7 +120,7 @@ export function URI_VLESS(line: string): IProxyVlessConfig {
   }
 
   let httpupgrade = false;
-  let network: NetworkType = "tcp";
+  let network: NetworkType;
 
   if (params.headerType === "http") {
     network = "http";