refactor: 重构lib代码（无实质性功能更新，可不更新）

lib/error.js

@@ -0,0 +1,37 @@
+export class MysError extends Error {
+  /**
+   * 自定义错误类
+   * @param {string} code 错误码
+   */
+  constructor(code, uid, result) {
+    let msg = '未知错误';
+    switch (code) {
+      case '10102':
+        if (result.message === 'Data is not public for the user') {
+          msg = `UID:${uid}，米游社数据未公开`;
+        } else {
+          msg = `UID:${uid}，请先去米游社绑定角色`;
+        }
+        break;
+      case '10041':
+      case '5003':
+        msg = `UID:${uid}，米游社账号异常，暂时无法查询，请发送 %绑定设备帮助 查看如何绑定设备`;
+        break;
+      case '10035':
+      case '1034':
+        msg = `UID:${uid}，米游社查询遇到验证码`;
+        break;
+      default:
+        if (/(登录|login)/i.test(res.message)) {
+          msg = `UID:${uid}，米游社cookie已失效`;
+        } else {
+          msg = `UID:${uid}，米游社接口报错：${res.message}`;
+        }
+    }
+    super(msg);
+    this.code = Number(code);
+    this.uid = uid;
+    this.result = result;
+    this.name = 'MysError';
+  }
+}