feat: 优化项目目录结构

apps/frontend/lib/api/fetcher.ts

@@ -0,0 +1,39 @@
+export interface StanderResponse<T> {
+    statusCode: number;
+    message: string;
+    data?: T;
+}
+
+export class ApiError extends Error {
+    constructor(
+        public statusCode: number,
+        public message: string,
+        public data?: unknown,
+    ) {
+        super(message);
+        this.name = 'ApiError';
+    }
+}
+
+const fetcher = async<T>(url: string, options?: RequestInit): Promise<T> => {
+    const res = await fetch(url, {
+        method: 'GET',
+        headers: {
+            'Content-Type': 'application/json',
+            // 自动带上 token
+            ...(typeof window !== 'undefined' && localStorage.getItem('token')
+                ? { Authorization: `Bearer ${localStorage.getItem('token')}` }
+                : {}),
+        },
+        ...options,
+    });
+
+    const result = await res.json();
+    if (result.statusCode !== 200) {
+        throw new ApiError(result.statusCode, result.message, result.data);
+    }
+
+    return result.data as T;
+}
+
+export default fetcher