Moved eventStoreConnection in it's onw file

src/client.js

@@ -0,0 +1,50 @@
+var EventData = require('./eventData');
+var results = require('./results');
+
+const expectedVersion = {
+  any: -2,
+  noStream: -1,
+  emptyStream: -1
+};
+const positions = {
+  start: new results.Position(0, 0),
+  end: new results.Position(-1, -1)
+};
+
+/**
+ * @param {string} eventId
+ * @param {object} data
+ * @param {object} [metadata]
+ * @param {string} [type]
+ * @returns {EventData}
+ */
+function jsonEventDataFactory(eventId, data, metadata, type) {
+  if (!data || typeof data !== 'object') throw new TypeError("data must be an object.");
+
+  var d = new Buffer(JSON.stringify(data));
+  var m = metadata ? new Buffer(JSON.stringify(metadata)) : null;
+  return new EventData(eventId, type || data.constructor.name, true, d, m);
+}
+
+/**
+ * @param {string} eventId
+ * @param {string} type
+ * @param {boolean} isJson
+ * @param {Buffer} data
+ * @param {Buffer} [metadata]
+ * @returns {EventData}
+ */
+function eventDataFactory(eventId, type, isJson, data, metadata) {
+  return new EventData(eventId, type, isJson, data, metadata);
+}
+
+module.exports.EventStoreConnection = require('./eventStoreConnection');
+module.exports.UserCredentials = require('./systemData/userCredentials');
+module.exports.EventData = EventData;
+module.exports.expectedVersion = expectedVersion;
+module.exports.positions = positions;
+
+// Helper functions
+module.exports.createConnection = module.exports.EventStoreConnection.create;
+module.exports.createEventData = eventDataFactory;
+module.exports.createJsonEventData = jsonEventDataFactory;