print out timestamp only when NODE_ENV='debug'

Author: jcouyang

lib/react-most.js

@@ -83,12 +83,12 @@ let Most = React.createClass({
     let engineClass = this.props && this.props.engine || mostEngine
     let engine = engineClass();
     // TODO: add support for ReactiveX
-    if(process.env.NODE_ENV!='production') {
+    if(process.env.NODE_ENV==='debug') {
       if(engineClass == mostEngine) {
         engine.intentStream.timestamp()
-          .observe(stamp=>console.log(`[${new Date(stamp.time).toLocaleTimeString()}][INTENT]:}`, stamp.value));
+          .observe(stamp=>console.log(`[${new Date(stamp.time).toJSON()}][INTENT]:}`, stamp.value));
         engine.historyStream.timestamp()
-          .observe(stamp=>console.log(`[${new Date(stamp.time).toLocaleTimeString()}][STATE]:}`, stamp.value));
+          .observe(stamp=>console.log(`[${new Date(stamp.time).toJSON()}][STATE]:}`, stamp.value));
       }
     }