Fix base URL normalization and README examples

Author: shuakami

README.md

@@ -18,7 +18,7 @@ npm i uapi-sdk-typescript
 ```ts
 import { UapiClient } from 'uapi-sdk-typescript'
 
-const client = new UapiClient('https://uapis.cn/api/v1')
+const client = new UapiClient('https://uapis.cn', 'YOUR_API_KEY')
 const result = await client.social.getSocialQqUserinfo({ qq: '10001' })
 console.log(result)
 ```
@@ -46,7 +46,7 @@ HTTP 封装基于 Axios，默认 15 秒超时并自动携带 `Authorization` 头
 ```ts
 import { UapiClient, UapiError } from 'uapi-sdk-typescript'
 
-const client = new UapiClient('https://uapis.cn/api/v1')
+const client = new UapiClient('https://uapis.cn', 'YOUR_API_KEY')
 
 // 成功路径
 const result = await client.social.getSocialQqUserinfo({ qq: '10001' })

src/index.ts

@@ -6,12 +6,19 @@ export type { RateLimitPolicyEntry, RateLimitStateEntry, ResponseMeta } from './
 
 type Config = { baseURL: string; token?: string; timeout?: number }
 
+const API_PREFIX = '/api/v1'
+
+function normalizeBaseURL(baseURL: string): string {
+  const trimmed = baseURL.replace(/\/+$/, '')
+  return trimmed.endsWith(API_PREFIX) ? trimmed.slice(0, -API_PREFIX.length) : trimmed
+}
+
 class HTTP {
   private cli: AxiosInstance
   private lastMeta?: ResponseMeta
 
   constructor(cfg: Config) {
-    this.cli = axios.create({ baseURL: cfg.baseURL, timeout: cfg.timeout ?? 15000 })
+    this.cli = axios.create({ baseURL: normalizeBaseURL(cfg.baseURL), timeout: cfg.timeout ?? 15000 })
     if (cfg.token) this.cli.defaults.headers.common['Authorization'] = `Bearer ${cfg.token}`
   }