Moved area-keys to data, and process it during runtime

test/index.html

@@ -190,7 +190,6 @@
     <script src='../js/id/core/relation.js'></script>
     <script src='../js/id/core/way.js'></script>
     <script src='../js/id/core/tree.js'></script>
-    <script src='../js/id/core/area_keys.js'></script>
     <script src='../js/id/core/oneway_tags.js'></script>
 
     <script src='../js/id/presets.js'></script>

test/spec/actions/split.js

@@ -1,4 +1,9 @@
 describe("iD.actions.Split", function () {
+
+    beforeEach(function () {
+        iD.areaKeys = iD().presets(iD.data.presets).presets().areaKeys();
+    });
+
     describe("#disabled", function () {
         it("returns falsy for a non-end node of a single way", function () {
             var graph = iD.Graph([

test/spec/presets.js

@@ -40,6 +40,33 @@ describe("iD.presets", function() {
         });
     });
 
+    describe("#areaKeys", function() {
+        var presets = iD.presets().load({
+            presets: {
+                a: {
+                    tags: {
+                        a: '*'
+                    },
+                    geometry: ['point', 'line', 'area']
+                },
+                ab: {
+                    tags: {
+                        a: 'b'
+                    },
+                    geometry: ['line']
+                }
+            }
+        });
+
+        it("whitelists keys from presets with area geometry", function() {
+            expect(presets.areaKeys()).to.have.key('a');
+        });
+
+        it("blacklists key-values from presets without an area geometry", function() {
+            expect(presets.areaKeys().a.b).to.eq(true);
+        });
+    });
+
     describe("expected matches", function() {
         var presets;