Add client

Client.js

@@ -0,0 +1,27 @@
+var EventEmitter = require('events').EventEmitter;
+var util = require('util');
+var redisClusterSlot = require('./redisClusterSlot');
+
+function Client() {
+    EventEmitter.call(this);
+}
+util.inherits(Client, EventEmitter);
+
+Client.prototype.getSlot = function (key) {
+    if (!key) return;
+    return redisClusterSlot(key);
+};
+
+Client.prototype.getNode = function (key) {
+    if (!this.nodes) return;
+    var slot = this.getSlot(key);
+    if (!slot) return;
+    var l = this.nodes.length;
+    for (var i = 0; i < l; i++) {
+        var node = this.nodes[i];
+        if (node && node.slots && node.slots[0] <= slot && slot <= node.slots[1])
+            return node;
+    }
+};
+
+module.exports = Client;

index.js

@@ -5,6 +5,7 @@ try {
   fastRedis = require('redis-fast-driver');
 } catch(e) {}
 
+var Client = require('./Client');
 var redisClusterSlot = require('./redisClusterSlot');
 var commands = require('./lib/commands');
 
@@ -140,7 +141,7 @@ function connectToNodes (cluster) {
 }
 
 function bindCommands (nodes, oldClient) {
-  var client = oldClient || new events.EventEmitter();
+  var client = oldClient || new Client();
   client.nodes = nodes;
   //catch on error from nodes
   function onError(err) {