fix https request error handling when no callback parameter (promises)

Author: dutu

CHANGELOG.md

@@ -1,3 +1,7 @@
+### 1.9.1 (2022-06-20)
+
+* Fix https request error handling when no `callback` parameter (promises)
+
 ### 1.9.0 (2021-12-06)
 
 * Add methods getOrderListV2, getOrderV2, getOrderV3

lib/BitX.js

@@ -107,7 +107,11 @@ BitX.prototype._request = function (method, resourcePath, data, callback) {
     })
 
     req.on('error', function (err) {
-      callback(err)
+      if (typeof callback === 'function') {
+        return callback(err)
+      } else {
+        return reject(err)
+      }
     })
 
     if (method === 'POST' && data) {