优化重试请求逻辑

lib/utils.js

@@ -80,3 +80,22 @@ export function isObject(item) {
 export function isIterable(obj) {
   return obj != null && typeof obj[Symbol.iterator] === 'function'
 }
+
+export function deepClone(obj) {
+  const newObj = Array.isArray(obj) ? [] : {}
+  if (obj && typeof obj === 'object') {
+    for (const key in obj) {
+      if (Object.prototype.hasOwnProperty.call(obj, key)) {
+        newObj[key] = (obj && typeof obj[key] === 'object') ? deepClone(obj[key]) : obj[key]
+      }
+    }
+  }
+  return newObj
+}
+
+/**
+ * 延时
+ * @param {*} ms
+ * @returns
+ */
+export const delay = ms => new Promise(resolve => setTimeout(resolve, ms))