get validaiton objects on context

ref #remote-presets

modules/validations/index.js

@@ -1,3 +1,4 @@
+export { validationCollection } from './validation_collection';
 export { validationDeprecatedTag } from './deprecated_tag';
 export { validationDisconnectedHighway } from './disconnected_highway';
 export { validationManyDeletions } from './many_deletions';

modules/validations/validation_collection.js

@@ -0,0 +1,16 @@
+import { utilStringQs } from '../util';
+import { text as d3_text } from 'd3-request';
+import mapcssParse from 'mapcss-parse/source/index';
+
+export function validationCollection() {
+    var validations = {};
+    validations.init = function (callback) { 
+        var validationsUrl = utilStringQs(window.location.hash)['validations'];
+        d3_text(validationsUrl, function(err, mapcss) {
+            if (err) return;
+            callback(mapcssParse(mapcss));            
+        });
+    };
+
+    return validations; 
+}