chore: add print helper again and refactor some code

Expose the RedisClient directly instead of only being a property

lib/utils.js

@@ -46,25 +46,29 @@ function replyToStrings (reply) {
  * @description Deep clone arbitrary objects with arrays.
  * Can't handle cyclic structures (results in a range error).
  * Any attribute with a non primitive value besides object
- * and array will be passed by reference (e.g. Buffers, Maps, Functions)
+ * and array will be passed by reference (e.g. Buffers, Maps, Functions).
  *
  * @param {any} obj
  * @returns any
  */
 function clone (obj) {
-  var copy
   if (Array.isArray(obj)) {
-    copy = new Array(obj.length)
+    const copy = new Array(obj.length)
     for (var i = 0; i < obj.length; i++) {
       copy[i] = clone(obj[i])
     }
     return copy
   }
   if (Object.prototype.toString.call(obj) === '[object Object]') {
-    copy = {}
-    const elements = Object.keys(obj)
-    for (var elem = elements.pop(); elem !== undefined; elem = elements.pop()) {
-      copy[elem] = clone(obj[elem])
+    const copy = {}
+    const keys = Object.keys(obj)
+    while (keys.length) {
+      const key = keys.pop()
+      if (key === 'stream') {
+        copy[key] = obj[key]
+      } else {
+        copy[key] = clone(obj[key])
+      }
     }
     return copy
   }
@@ -96,12 +100,10 @@ function convenienceClone (obj) {
  * @param {Denque} queue
  */
 function replyInOrder (client, callback, err, res, queue) {
-  var commandObj
-  if (queue) {
-    commandObj = queue.peekBack()
-  } else {
-    commandObj = client.offlineQueue.peekBack() || client.commandQueue.peekBack()
-  }
+  const commandObj = queue
+    ? queue.peekBack()
+    : (client.offlineQueue.peekBack() || client.commandQueue.peekBack())
+
   if (!commandObj) {
     process.nextTick(callback, err, res)
   } else {
@@ -149,6 +151,21 @@ function handleReply (client, reply, command) {
   return reply
 }
 
+/**
+ * @description Callback result print helper
+ *
+ * @param {Error|null} err
+ * @param {any} reply
+ */
+function print (err, reply) {
+  if (err) {
+    // A error always begins with Error:
+    console.error(err.toString())
+  } else {
+    console.log('Reply: ' + reply)
+  }
+}
+
 /**
  * @description Set default reconnect variables
  *
@@ -171,5 +188,6 @@ module.exports = {
   replyInOrder,
   warn,
   handleReply,
-  setReconnectDefaults
+  setReconnectDefaults,
+  print
 }