isNil => a$nil

bower.json

@@ -24,7 +24,7 @@
   ],
   "private": false,
   "dependencies": {
-    "amber": ">0.18.1",
+    "amber": ">0.18.5",
     "amber-contrib-jquery": ">=0.2.0"
   },
   "devDependencies": {

src/Web-Snippets.js

@@ -180,7 +180,7 @@ return $core.withContext(function($ctx1) {
 //>>excludeEnd("ctx");
 var $1,$receiver;
 $1=self["@snippets"];
-if(($receiver = $1) == null || $receiver.isNil){
+if(($receiver = $1) == null || $receiver.a$nil){
 self["@snippets"]=$globals.HashedCollection._newFromPairs_([]);
 return self["@snippets"];
 } else {
@@ -253,7 +253,7 @@ return $core.withContext(function($ctx1) {
 //>>excludeEnd("ctx");
 var $1,$2,$receiver;
 $1=self["@current"];
-if(($receiver = $1) == null || $receiver.isNil){
+if(($receiver = $1) == null || $receiver.a$nil){
 $2=(
 //>>excludeStart("ctx", pragmas.excludeDebugContexts);
 $ctx1.supercall = true,

src/Web.js

@@ -1344,7 +1344,7 @@ $ctx1.supercall = true,
 $ctx1.supercall = false;
 //>>excludeEnd("ctx");;
 $1=self["@root"];
-if(($receiver = $1) == null || $receiver.isNil){
+if(($receiver = $1) == null || $receiver.a$nil){
 self["@root"]=$recv($globals.TagBrush)._fromString_canvas_("div",self);
 self["@root"];
 } else {