remove moment as a dependency

lib/stats.js

@@ -25,7 +25,6 @@ OTHER DEALINGS IN THE SOFTWARE.
 
 "use strict";
 
-var moment = require("moment");
 var movingAverage = require("moving-average");
 var version = "mosca " + require("../package").version;
 
@@ -159,8 +158,6 @@ Stats.prototype.wire = function wire(server) {
     });
   }
 
-  var mom = moment(this.started);
-
   var timer = setInterval(function() {
     var stats = server.stats;
     var mem = process.memoryUsage();
@@ -179,7 +176,7 @@ Stats.prototype.wire = function wire(server) {
 
     doPublish("version", version);
     doPublish("started_at", server.stats.started.toISOString());
-    doPublish("uptime", mom.from(Date.now(), true));
+    doPublish("uptime", Math.ceil((Date.now() - server.stats.started) / 1000) + ' seconds');
     doPublish("clients/maximum", stats.maxConnectedClients);
     doPublish("clients/connected", stats.connectedClients);
     doPublish("publish/received", stats.publishedMessages);

package.json

@@ -82,7 +82,6 @@
     "lru-cache": "~4.0.0",
     "memdown": "~1.1.1",
     "minimatch": "~3.0.0",
-    "moment": "~2.13.0",
     "moving-average": "0.1.1",
     "mqtt": "^1.6.3",
     "mqtt-connection": "^2.1.1",

test/stats.js

@@ -281,7 +281,7 @@ describe("mosca.Stats", function() {
   it("should publish the uptime every 10s", function(done) {
     server.on("testPublished", function(packet) {
       if (packet.topic === "$SYS/42/uptime") {
-        expect(packet.payload).to.eql("a few seconds");
+        expect(packet.payload).to.eql("10 seconds");
         done();
       }
     });
@@ -294,7 +294,7 @@ describe("mosca.Stats", function() {
 
     server.on("testPublished", function func(packet) {
       if (packet.topic === "$SYS/42/uptime" &&
-         packet.payload === "3 minutes") {
+         packet.payload === "180 seconds") {
         server.removeListener("testPublished", func);
         done();
       }