Minimize functional tricks in connection

js/iD/Connection.js

@@ -15,7 +15,9 @@ iD.Connection = function() {
     }
 
     function loadFromURL(url, callback) {
-        d3.xml(url, parse(callback));
+        d3.xml(url, function(err, dom) {
+            callback(parse(dom));
+        });
     }
 
     function getNodes(obj) {
@@ -81,24 +83,22 @@ iD.Connection = function() {
         return iD.Entity(o);
     }
 
-    function parse(callback) {
-        return function(err, dom) {
-            if (!dom.childNodes) return callback(new Error('Bad request'));
-            var root = dom.childNodes[0];
-            var entities = {};
-            refNodes = {};
-            var addEntity = function (obj) {
-                var o = objectData(obj);
-                if (o.type === 'node') o._poi = !refNodes[o.id];
-                entities[o.id] = o;
-            };
+    function parse(dom) {
+        if (!dom.childNodes) return new Error('Bad request');
+        var root = dom.childNodes[0];
+        var entities = {};
+        refNodes = {};
+        function addEntity(obj) {
+            var o = objectData(obj);
+            if (o.type === 'node') o._poi = !refNodes[o.id];
+            entities[o.id] = o;
+        }
 
-            _.forEach(root.getElementsByTagName('way'), addEntity);
-            _.forEach(root.getElementsByTagName('node'), addEntity);
-            _.forEach(root.getElementsByTagName('relation'), addEntity);
+        _.forEach(root.getElementsByTagName('way'), addEntity);
+        _.forEach(root.getElementsByTagName('node'), addEntity);
+        _.forEach(root.getElementsByTagName('relation'), addEntity);
 
-            callback(iD.Graph(entities));
-        };
+        return iD.Graph(entities);
     }
 
     connection.bboxFromAPI = bboxFromAPI;

js/iD/renderer/Map.js

@@ -19,10 +19,7 @@ iD.Map = function(elem) {
     }
 
     function roundCoords(c) {
-        return [
-            Math.floor(c[0]),
-            Math.floor(c[1])
-        ];
+        return [Math.floor(c[0]), Math.floor(c[1])];
     }
 
     var map = {},
@@ -103,9 +100,12 @@ iD.Map = function(elem) {
     var tileclient = iD.Tiles(tilegroup, projection);
 
     // For one-way roads, find the length of a triangle
-    var arrow = surface.append('text').text('►');
-    var alength = arrow.node().getComputedTextLength();
-    arrow.remove();
+    var alength = (function() {
+        var arrow = surface.append('text').text('►');
+        var alength = arrow.node().getComputedTextLength();
+        arrow.remove();
+        return alength;
+    })();
 
     function classActive(d) { return d.id === selection; }
 
@@ -171,14 +171,6 @@ iD.Map = function(elem) {
         hit_g.selectAll('rect.handle').remove();
     }
 
-    function hideFills() {
-        fill_g.selectAll('path').remove();
-    }
-
-    function hideMarkers() {
-        hit_g.selectAll('g.marker').remove();
-    }
-
     function drawFills(areas) {
         var fills = fill_g.selectAll('path').data(areas, key);
         fills.exit().remove();