diff --git a/tsconfig.json b/tsconfig.json
index c9b2588..9c53db1 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "ESNext",
+    "target": "ES2019",
     "useDefineForClassFields": true,
     "module": "ESNext",
     "moduleResolution": "bundler",
@@ -9,10 +9,9 @@
     "resolveJsonModule": true,
     "isolatedModules": true,
     "esModuleInterop": true,
-    "lib": ["ESNext", "DOM"],
+    "lib": ["ES2019", "DOM"],
     "skipLibCheck": true,
     "noEmit": true,
-    "ignoreDeprecations": "6.0",
     "baseUrl": ".",
     "paths": {
       "@/*": ["./*"],
diff --git a/utils/currency.ts b/utils/currency.ts
index f3d3840..9225495 100644
--- a/utils/currency.ts
+++ b/utils/currency.ts
@@ -21,7 +21,9 @@ const CURRENCY_SYMBOLS: Record<string, string> = {
  * @returns 货币符号
  */
 export function getCurrencySymbol(currency?: string): string {
-  return CURRENCY_SYMBOLS[currency?.toUpperCase() ?? 'CNY'] || '¥';
+  // 兼容小程序：避免使用 ?. 和 ??
+  const code = currency ? currency.toUpperCase() : 'CNY';
+  return CURRENCY_SYMBOLS[code] || '¥';
 }
 
 /**
diff --git a/vite.config.ts b/vite.config.ts
index af36067..3a112d5 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -10,5 +10,17 @@ export default defineConfig({
       '@/utils': '/home/node/.openclaw/workspace/AssetManager/AssetManager.UniApp/utils',
       '@/types': '/home/node/.openclaw/workspace/AssetManager/AssetManager.UniApp/types'
     }
+  },
+  build: {
+    // 小程序兼容性：转译 ES2019+ 语法
+    target: 'es2015',
+    minify: 'terser',
+    terserOptions: {
+      ecma: 2015
+    }
+  },
+  esbuild: {
+    // 确保可选链和空值合并被转译
+    target: 'es2015'
   }
 })