var->let, formating

lib/sources.js

@@ -1,27 +1,26 @@
 'use strict';
 
-var util = require('util');
-var pathLib = require('path');
-var _ = require('underscore');
-var Promise = require('bluebird');
-var yaml = require('js-yaml');
+let util = require('util'),
+    pathLib = require('path'),
+    _ = require('underscore'),
+    Promise = require('bluebird'),
+    yaml = require('js-yaml'),
+    fs = require("fs"),
+    core = require('./core'),
+    Err = require('./Err');
 
-var fs = require("fs");
 Promise.promisifyAll(fs);
 
 // constant
-var sourceByRefProtocol = 'sourceref:';
-
-var core = require('./core');
-var Err = require('./Err');
+let sourceByRefProtocol = 'sourceref:';
 
 function Sources() {
     this._variables = {};
     this._sources = {};
 
     // Set up a ref protocol resolver - this way its enough to specify the source
     // by sourceref:///?ref=sourceID URL, instead of a full source URL.
-    var self = this;
+    let self = this;
     core.tilelive.protocols[sourceByRefProtocol] = function (uri, callback) {
         Promise.try(function () {
             uri = core.normalizeUri(uri);
@@ -241,7 +240,6 @@ function updateInfo(info, override, source, sourceId) {
 }
 
 Sources.prototype._localOrExternalDataAsync = function(values, name) {
-    let self = this;
     return Promise.try(function () {
         if (values === undefined) {
             core.log('info', name + ' is not set in the config file');