initial plumbing for iD validation errors

ref #remote-presets

modules/util/index.js

@@ -15,6 +15,7 @@ export { utilGetAllNodes } from './util';
 export { utilGetPrototypeOf } from './util';
 export { utilGetSetValue } from './get_set_value';
 export { utilIdleWorker} from './idle_worker';
+export { utilMapCSSRule } from './mapcss_rule'; 
 export { utilNoAuto } from './util';
 export { utilPrefixCSSProperty } from './util';
 export { utilPrefixDOMProperty } from './util';

modules/util/mapcss_rule.js

@@ -0,0 +1 @@
+export function mapcssRule() {}