Recompiles all files

src/Compiler-AST.js

@@ -333,7 +333,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self._parent();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=$2;
 } else {
 var node;
@@ -425,7 +425,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self._parent();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=$2;
 } else {
 var node;
@@ -479,7 +479,7 @@ function $Array(){return globals.Array||(typeof Array=="undefined"?nil:Array)}
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@nodes"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@nodes"]=_st($Array())._new();
 $1=self["@nodes"];
 } else {
@@ -553,11 +553,11 @@ protocol: 'accessing',
 fn: function (){
 var self=this;
 return smalltalk.withContext(function($ctx1) { 
-var $2,$3,$1,$receiver,$receiver;
+var $2,$3,$1,$receiver;
 $2=self["@position"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=self._parent();
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $1=$3;
 } else {
 var node;
@@ -689,7 +689,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@shouldBeAliased"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=false;
 } else {
 $1=$2;
@@ -727,7 +727,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@shouldBeInlined"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=false;
 } else {
 $1=$2;
@@ -783,7 +783,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@source"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="";
 } else {
 $1=$2;
@@ -1077,7 +1077,7 @@ function $Array(){return globals.Array||(typeof Array=="undefined"?nil:Array)}
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@parameters"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@parameters"]=_st($Array())._new();
 $1=self["@parameters"];
 } else {
@@ -1356,7 +1356,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@arguments"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=[];
 } else {
 $1=$2;
@@ -1756,7 +1756,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@arguments"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@arguments"]=[];
 $1=self["@arguments"];
 } else {
@@ -1933,7 +1933,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$3,$2,$5,$6,$4,$receiver;
 $1=self._receiver();
 $ctx1.sendIdx["receiver"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $3=self._arguments();
 $ctx1.sendIdx["arguments"]=1;
 $2=_st($3)._copy();
@@ -2093,7 +2093,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@superSend"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=false;
 } else {
 $1=$2;
@@ -2137,7 +2137,7 @@ _st($2)._source_(self._source());
 $3=$2;
 $5=self._receiver();
 $ctx1.sendIdx["receiver"]=1;
-if(($receiver = $5) == nil || $receiver == null){
+if(($receiver = $5) == null || $receiver.isNil){
 $4=anObject;
 } else {
 $4=_st(self._receiver())._valueForReceiver_(anObject);
@@ -2259,7 +2259,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@temps"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=[];
 } else {
 $1=$2;
@@ -2461,7 +2461,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@assigned"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=false;
 } else {
 $1=$2;

src/Compiler-Core.js

@@ -110,7 +110,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@source"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="";
 } else {
 $1=$2;
@@ -245,7 +245,7 @@ function $InliningCodeGenerator(){return globals.InliningCodeGenerator||(typeof
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@codeGeneratorClass"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=$InliningCodeGenerator();
 } else {
 $1=$2;
@@ -586,7 +586,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@source"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="";
 } else {
 $1=$2;
@@ -687,6 +687,31 @@ globals.Compiler.klass);
 
 smalltalk.addClass('DoIt', globals.Object, [], 'Compiler-Core');
 globals.DoIt.comment="`DoIt` is the class used to compile and evaluate expressions. See `Compiler >> evaluateExpression:`.";
+smalltalk.addMethod(
+smalltalk.method({
+selector: "xxxDoIt",
+protocol: 'xxxDoIt',
+fn: function (){
+var self=this;
+function $Smalltalk(){return globals.Smalltalk||(typeof Smalltalk=="undefined"?nil:Smalltalk)}
+return smalltalk.withContext(function($ctx1) { 
+var $1;
+$1=_st((function(){
+return smalltalk.withContext(function($ctx2) {
+return _st(_st($Smalltalk())._packages())._do_((function(each){
+return smalltalk.withContext(function($ctx3) {
+return _st(each)._commit();
+}, function($ctx3) {$ctx3.fillBlock({each:each},$ctx2,2)})}));
+}, function($ctx2) {$ctx2.fillBlock({},$ctx1,1)})}))._value();
+return $1;
+}, function($ctx1) {$ctx1.fill(self,"xxxDoIt",{},globals.DoIt)})},
+args: [],
+source: "xxxDoIt ^ [ Smalltalk packages do: [ :each | each commit ] ] value",
+messageSends: ["value", "do:", "packages", "commit"],
+referencedClasses: ["Smalltalk"]
+}),
+globals.DoIt);
+
 
 
 smalltalk.addClass('Evaluator', globals.InterfacingObject, [], 'Compiler-Core');

src/Compiler-IR.js

@@ -136,7 +136,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$receiver;
 $1=self["@nextAlias"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self["@nextAlias"]=(0);
 self["@nextAlias"];
 } else {
@@ -857,7 +857,7 @@ function $OrderedCollection(){return globals.OrderedCollection||(typeof OrderedC
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@instructions"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@instructions"]=_st($OrderedCollection())._new();
 $1=self["@instructions"];
 } else {
@@ -1149,7 +1149,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self._parent();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=$2;
 } else {
 var node;
@@ -1296,7 +1296,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@arguments"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=[];
 } else {
 $1=$2;
@@ -1358,7 +1358,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@requiresSmalltalkContext"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=false;
 } else {
 $1=$2;
@@ -1543,7 +1543,7 @@ function $Set(){return globals.Set||(typeof Set=="undefined"?nil:Set)}
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@internalVariables"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@internalVariables"]=_st($Set())._new();
 $1=self["@internalVariables"];
 } else {
@@ -1875,7 +1875,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@scope"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=_st(self._parent())._scope();
 } else {
 $1=$2;
@@ -3128,7 +3128,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$receiver;
 sends=_st(_st(_st(_st(anIRSend)._method())._sendIndexes())._at_(_st(anIRSend)._selector()))._size();
 $1=_st(anIRSend)._classSend();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self._visitSend_(anIRSend);
 } else {
 self._visitSuperSend_(anIRSend);

src/Compiler-Interpreter.js

@@ -277,7 +277,7 @@ var $1,$3,$2,$4,$5,$receiver;
 $1=self._isBlockContext();
 if(smalltalk.assert($1)){
 $3=self._outerContext();
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $2=$3;
 } else {
 var context;
@@ -287,7 +287,7 @@ $2=_st(context)._ast();
 return $2;
 };
 $4=self["@ast"];
-if(($receiver = $4) == nil || $receiver == null){
+if(($receiver = $4) == null || $receiver.isNil){
 self._initializeAST();
 } else {
 $4;
@@ -453,7 +453,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@index"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=(0);
 } else {
 $1=$2;
@@ -518,13 +518,13 @@ self._receiver_(_st(aMethodContext)._receiver());
 $1=self._selector_(_st(aMethodContext)._selector());
 $2=_st(aMethodContext)._outerContext();
 $ctx1.sendIdx["outerContext"]=1;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $2;
 } else {
 var outer;
 outer=$receiver;
 $3=_st(outer)._methodContext();
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $3;
 } else {
 self._outerContext_(_st(self._class())._fromMethodContext_(_st(aMethodContext)._outerContext()));
@@ -558,7 +558,7 @@ _st($1)._context_(self);
 $2=_st($1)._yourself();
 self["@interpreter"]=$2;
 $3=self._innerContext();
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $3;
 } else {
 self._setupInterpreter_(self["@interpreter"]);
@@ -630,7 +630,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$receiver;
 $1=self["@interpreter"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self._initializeInterpreter();
 } else {
 $1;
@@ -753,7 +753,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$receiver;
 $1=self["@locals"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self._initializeLocals();
 } else {
 $1;
@@ -826,7 +826,7 @@ return smalltalk.withContext(function($ctx1) {
 var $2,$5,$4,$3,$1,$receiver;
 $2=self._methodContext();
 $ctx1.sendIdx["methodContext"]=1;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=$2;
 } else {
 $5=self._methodContext();
@@ -892,7 +892,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 self["@outerContext"]=anAIContext;
 $1=self["@outerContext"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 var context;
@@ -985,7 +985,7 @@ function $Dictionary(){return globals.Dictionary||(typeof Dictionary=="undefined
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@sendIndexes"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=_st($Dictionary())._new();
 } else {
 $1=$2;
@@ -1034,7 +1034,7 @@ _st($2)._visit_($3);
 $4=_st($1)._currentNode();
 currentNode=$4;
 $5=_st(self._ast())._sequenceNode();
-if(($receiver = $5) == nil || $receiver == null){
+if(($receiver = $5) == null || $receiver.isNil){
 $5;
 } else {
 var sequence;
@@ -1214,7 +1214,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$receiver;
 $1=self._context();
 $ctx1.sendIdx["context"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return true;
 } else {
 $1;
@@ -1273,7 +1273,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=self._context();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 var cxt;
@@ -1297,7 +1297,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self._context();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=$2;
 } else {
 var ctx;
@@ -1341,7 +1341,7 @@ return smalltalk.withContext(function($ctx1) {
 var $2,$1,$receiver;
 $2=self._interpreter();
 $ctx1.sendIdx["interpreter"]=1;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=$2;
 } else {
 $1=_st(self._interpreter())._node();
@@ -1372,7 +1372,7 @@ $2=_st($3)._atEnd();
 $ctx1.sendIdx["atEnd"]=1;
 if(smalltalk.assert($2)){
 $4=_st(self._context())._outerContext();
-if(($receiver = $4) == nil || $receiver == null){
+if(($receiver = $4) == null || $receiver.isNil){
 $4;
 } else {
 var outerContext;
@@ -1657,7 +1657,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@returned"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=false;
 } else {
 $1=$2;
@@ -1991,7 +1991,7 @@ $3=_st(anObject)._class();
 $ctx1.sendIdx["class"]=1;
 $2=_st($3)._superclass();
 $ctx1.sendIdx["superclass"]=1;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $4=self._messageNotUnderstood_receiver_(aMessage,anObject);
 $ctx1.sendIdx["messageNotUnderstood:receiver:"]=1;
 return $4;
@@ -2065,7 +2065,7 @@ function $OrderedCollection(){return globals.OrderedCollection||(typeof OrderedC
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@stack"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@stack"]=_st($OrderedCollection())._new();
 $1=self["@stack"];
 } else {
@@ -2517,7 +2517,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@index"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@index"]=(0);
 $1=self["@index"];
 } else {

src/Compiler-Semantic.js

@@ -94,7 +94,7 @@ function $Dictionary(){return globals.Dictionary||(typeof Dictionary=="undefined
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@args"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@args"]=_st($Dictionary())._new();
 $1=self["@args"];
 } else {
@@ -152,7 +152,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@blockIndex"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=(0);
 } else {
 $1=$2;
@@ -302,10 +302,10 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$3,$receiver;
 lookup=self._bindingFor_(aNode);
 $1=lookup;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $2=self._outerScope();
 $ctx1.sendIdx["outerScope"]=1;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 lookup=$2;
 } else {
 lookup=_st(self._outerScope())._lookupVariable_(aNode);
@@ -334,7 +334,7 @@ return smalltalk.withContext(function($ctx1) {
 var $2,$1,$receiver;
 $2=self._outerScope();
 $ctx1.sendIdx["outerScope"]=1;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=$2;
 } else {
 $1=_st(self._outerScope())._methodScope();
@@ -440,7 +440,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$4,$3,$5,$receiver;
 $1=self._outerScope();
 $ctx1.sendIdx["outerScope"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return (1);
 } else {
 $1;
@@ -473,7 +473,7 @@ function $Dictionary(){return globals.Dictionary||(typeof Dictionary=="undefined
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@temps"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@temps"]=_st($Dictionary())._new();
 $1=self["@temps"];
 } else {
@@ -556,7 +556,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=globals.MethodLexicalScope.superclass.fn.prototype._bindingFor_.apply(_st(self), [aNode]);
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=_st(self._iVars())._at_ifAbsent_(_st(aNode)._value(),(function(){
 return nil;
 }));
@@ -633,7 +633,7 @@ function $Dictionary(){return globals.Dictionary||(typeof Dictionary=="undefined
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@iVars"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@iVars"]=_st($Dictionary())._new();
 $1=self["@iVars"];
 } else {
@@ -672,7 +672,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@localReturn"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=false;
 } else {
 $1=$2;
@@ -726,7 +726,7 @@ function $OrderedCollection(){return globals.OrderedCollection||(typeof OrderedC
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@nonLocalReturns"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@nonLocalReturns"]=_st($OrderedCollection())._new();
 $1=self["@nonLocalReturns"];
 } else {
@@ -753,7 +753,7 @@ function $PseudoVar(){return globals.PseudoVar||(typeof PseudoVar=="undefined"?n
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$3,$4,$receiver;
 $1=self["@pseudoVars"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self["@pseudoVars"]=_st($Dictionary())._new();
 self["@pseudoVars"];
 _st(_st($Smalltalk())._pseudoVariableNames())._do_((function(each){
@@ -803,7 +803,7 @@ function $OrderedCollection(){return globals.OrderedCollection||(typeof OrderedC
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@unknownVariables"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@unknownVariables"]=_st($OrderedCollection())._new();
 $1=self["@unknownVariables"];
 } else {
@@ -1322,7 +1322,7 @@ function $Set(){return globals.Set||(typeof Set=="undefined"?nil:Set)}
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@classReferences"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@classReferences"]=_st($Set())._new();
 $1=self["@classReferences"];
 } else {
@@ -1419,7 +1419,7 @@ function $Dictionary(){return globals.Dictionary||(typeof Dictionary=="undefined
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@messageSends"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@messageSends"]=_st($Dictionary())._new();
 $1=self["@messageSends"];
 } else {
@@ -1502,7 +1502,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$receiver;
 $1=self["@blockIndex"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self["@blockIndex"]=(0);
 self["@blockIndex"];
 } else {
@@ -1528,7 +1528,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=self["@currentScope"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 self["@currentScope"]=_st(self["@currentScope"])._outerScope();
@@ -1569,7 +1569,7 @@ function $Dictionary(){return globals.Dictionary||(typeof Dictionary=="undefined
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@superSends"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@superSends"]=_st($Dictionary())._new();
 $1=self["@superSends"];
 } else {
@@ -1625,7 +1625,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=_st(self["@currentScope"])._lookupVariable_(aString);
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 self._errorShadowingVariable_(aString);
@@ -1810,7 +1810,7 @@ $10=_st($11)._includes_($12);
 if(smalltalk.assert($10)){
 _st(aNode)._shouldBeInlined_(true);
 $13=_st(aNode)._receiver();
-if(($receiver = $13) == nil || $receiver == null){
+if(($receiver = $13) == null || $receiver.isNil){
 $13;
 } else {
 var receiver;
@@ -1878,7 +1878,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$3,$2,$4,$5,$6,$7,$8,$9,$10,$11,$receiver;
 binding=_st(self["@currentScope"])._lookupVariable_(aNode);
 $1=binding;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $3=_st(aNode)._value();
 $ctx1.sendIdx["value"]=1;
 $2=_st($3)._isCapitalized();

src/Compiler-Tests.js

@@ -1167,7 +1167,7 @@ _st($1)._interpreter_(interpreter);
 $2=_st($1)._yourself();
 ctx=$2;
 $3=_st(ast)._sequenceNode();
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $3;
 } else {
 var sequence;
@@ -1293,7 +1293,7 @@ $2=_st($1)._yourself();
 ctx=$2;
 ast=self._parse_forClass_(aString,_st(anObject)._class());
 $3=_st(ast)._sequenceNode();
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $3;
 } else {
 var sequence;

src/Helios-Browser.js

@@ -29,7 +29,7 @@ function $HLClassesListWidget(){return globals.HLClassesListWidget||(typeof HLCl
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@classesListWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@classesListWidget"]=_st($HLClassesListWidget())._on_(self._model());
 self["@classesListWidget"];
 $1=_st(self["@classesListWidget"])._next_(self._protocolsListWidget());
@@ -91,7 +91,7 @@ function $HLMethodsListWidget(){return globals.HLMethodsListWidget||(typeof HLMe
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@methodsListWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@methodsListWidget"]=_st($HLMethodsListWidget())._on_(self._model());
 self["@methodsListWidget"];
 $1=_st(self["@methodsListWidget"])._next_(self._sourceWidget());
@@ -117,7 +117,7 @@ function $HLBrowserModel(){return globals.HLBrowserModel||(typeof HLBrowserModel
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@model"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self._model_(_st($HLBrowserModel())._new());
 $1=self["@model"];
 } else {
@@ -181,11 +181,11 @@ protocol: 'reactions',
 fn: function (anAnnouncement){
 var self=this;
 return smalltalk.withContext(function($ctx1) { 
-var $1,$3,$2,$receiver,$receiver;
+var $1,$3,$2,$receiver;
 $1=_st(anAnnouncement)._item();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $3=_st(self._model())._selectedPackage();
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $2=self._defaultTabLabel();
 } else {
 var package_;
@@ -217,7 +217,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=_st(anAnnouncement)._item();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 var item;
@@ -286,7 +286,7 @@ function $HLPackagesListWidget(){return globals.HLPackagesListWidget||(typeof HL
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@packagesListWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@packagesListWidget"]=_st($HLPackagesListWidget())._on_(self._model());
 self["@packagesListWidget"];
 $1=_st(self["@packagesListWidget"])._next_(self._classesListWidget());
@@ -312,7 +312,7 @@ function $HLProtocolsListWidget(){return globals.HLProtocolsListWidget||(typeof
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@protocolsListWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@protocolsListWidget"]=_st($HLProtocolsListWidget())._on_(self._model());
 self["@protocolsListWidget"];
 $1=_st(self["@protocolsListWidget"])._next_(self._methodsListWidget());
@@ -386,7 +386,7 @@ function $HLBrowserBottomWidget(){return globals.HLBrowserBottomWidget||(typeof
 return smalltalk.withContext(function($ctx1) { 
 var $2,$3,$4,$1,$receiver;
 $2=self["@sourceWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=_st($HLBrowserBottomWidget())._new();
 _st($3)._model_(self._model());
 $4=_st($3)._yourself();
@@ -451,7 +451,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$receiver;
 $1=self["@nextId"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self["@nextId"]=(0);
 self["@nextId"];
 } else {
@@ -540,7 +540,7 @@ function $HLBrowserCodeWidget(){return globals.HLBrowserCodeWidget||(typeof HLBr
 return smalltalk.withContext(function($ctx1) { 
 var $2,$3,$4,$1,$receiver;
 $2=self["@codeWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=_st($HLBrowserCodeWidget())._new();
 _st($3)._browserModel_(self._model());
 $4=_st($3)._yourself();
@@ -568,7 +568,7 @@ function $HLDocumentationWidget(){return globals.HLDocumentationWidget||(typeof
 return smalltalk.withContext(function($ctx1) { 
 var $2,$3,$4,$1,$receiver;
 $2=self["@documentationWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=_st($HLDocumentationWidget())._new();
 _st($3)._model_(self._model());
 $4=_st($3)._yourself();
@@ -920,7 +920,7 @@ function $HLShowTemplate(){return globals.HLShowTemplate||(typeof HLShowTemplate
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$3,$receiver;
 $1=self._selectedPackage();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 var package_;
@@ -947,7 +947,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@showComment"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=true;
 } else {
 $1=$2;
@@ -992,7 +992,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@showInstance"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=true;
 } else {
 $1=$2;
@@ -1021,7 +1021,7 @@ self["@showInstance"]=aBoolean;
 self["@showInstance"];
 $1=self._selectedClass();
 $ctx2.sendIdx["selectedClass"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 if(smalltalk.assert(aBoolean)){
@@ -1053,7 +1053,7 @@ function $HLShowTemplate(){return globals.HLShowTemplate||(typeof HLShowTemplate
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$3,$receiver;
 $1=self._selectedClass();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 var theClass;
@@ -1130,7 +1130,7 @@ $2=self._theClass();
 $ctx1.sendIdx["theClass"]=1;
 $1=_st($2)._superclass();
 $ctx1.sendIdx["superclass"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 $3=_st(self._selectorsCache())._cacheFor_(_st(self._theClass())._superclass());
@@ -1217,7 +1217,7 @@ function $HashedCollection(){return globals.HashedCollection||(typeof HashedColl
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@overriddenCache"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@overriddenCache"]=_st($HashedCollection())._new();
 $1=self["@overriddenCache"];
 } else {
@@ -1242,7 +1242,7 @@ function $HashedCollection(){return globals.HashedCollection||(typeof HashedColl
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@overrideCache"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@overrideCache"]=_st($HashedCollection())._new();
 $1=self["@overrideCache"];
 } else {
@@ -1395,7 +1395,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 globals.HLClassesListWidget.superclass.fn.prototype._focus.apply(_st(self), []);
 $1=self._selectedItem();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 _st(self._model())._showClassTemplate();
 } else {
 $1;
@@ -1758,7 +1758,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$3,$receiver;
 $1=_st(anAnnouncement)._item();
 $ctx1.sendIdx["item"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return self;
 } else {
 $1;
@@ -2096,7 +2096,7 @@ fn: function (aPackage){
 var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
-if(($receiver = aPackage) == nil || $receiver == null){
+if(($receiver = aPackage) == null || $receiver.isNil){
 $1=[];
 } else {
 $1=_st(_st(_st(aPackage)._classes())._collect_((function(each){
@@ -2279,7 +2279,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self._selectedItem();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="";
 } else {
 var item;
@@ -2323,7 +2323,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self._selectedItem();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._defaultHead();
 } else {
 var item;
@@ -2429,7 +2429,7 @@ $2=self._model();
 $ctx1.sendIdx["model"]=1;
 $1=_st($2)._selectedClass();
 $ctx1.sendIdx["selectedClass"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return self;
 } else {
 $1;
@@ -2540,7 +2540,7 @@ function $Showdown(){return globals.Showdown||(typeof Showdown=="undefined"?nil:
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$4,$5,$3,$6,$7,$receiver;
 $1=self._selectedItem();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 self._renderInheritanceOn_(html);
@@ -2611,7 +2611,7 @@ $4=self._selectedItem();
 $ctx2.sendIdx["selectedItem"]=1;
 $3=_st($4)._superclass();
 $ctx2.sendIdx["superclass"]=1;
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 return _st(_st(html)._em())._with_("nil");
 $ctx2.sendIdx["with:"]=3;
 } else {
@@ -2664,7 +2664,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=_st(self._model())._selectedClass();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=$2;
 } else {
 var class_;
@@ -2782,7 +2782,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 globals.HLMethodsListWidget.superclass.fn.prototype._focus.apply(_st(self), []);
 $1=self._selectedItem();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 _st(self._model())._showMethodTemplate();
 } else {
 $1;
@@ -2876,7 +2876,7 @@ $2=self._model();
 $ctx1.sendIdx["model"]=1;
 $1=_st($2)._selectedClass();
 $ctx1.sendIdx["selectedClass"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $3=[];
 return $3;
 } else {
@@ -3040,7 +3040,7 @@ throw $early=[self];
 }));
 $2=self._selectedItem();
 $ctx1.sendIdx["selectedItem"]=1;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $2;
 } else {
 $4=_st(_st(method)._methodClass()).__eq(_st(self._model())._selectedClass());
@@ -3313,7 +3313,7 @@ fn: function (aSelector){
 var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
-if(($receiver = aSelector) == nil || $receiver == null){
+if(($receiver = aSelector) == null || $receiver.isNil){
 $2=self._model();
 $ctx1.sendIdx["model"]=1;
 $1=_st($2)._selectedMethod_(nil);
@@ -3378,7 +3378,7 @@ fn: function (aString){
 var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
-if(($receiver = aString) == nil || $receiver == null){
+if(($receiver = aString) == null || $receiver.isNil){
 $2=[];
 } else {
 $2=self._selectorsInProtocol_(aString);
@@ -3506,7 +3506,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@items"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._initializeItems();
 } else {
 $1=$2;
@@ -3954,7 +3954,7 @@ var $1,$2,$3,$receiver;
 protocol=_st(anAnnouncement)._item();
 self._selectedItem_(protocol);
 $1=protocol;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return self;
 } else {
 $1;
@@ -4077,7 +4077,7 @@ var self=this;
 function $Array(){return globals.Array||(typeof Array=="undefined"?nil:Array)}
 return smalltalk.withContext(function($ctx1) { 
 var $2,$3,$4,$1,$receiver;
-if(($receiver = aClass) == nil || $receiver == null){
+if(($receiver = aClass) == null || $receiver.isNil){
 $2=self._allProtocol();
 $ctx1.sendIdx["allProtocol"]=1;
 $1=_st($Array())._with_($2);
@@ -4124,7 +4124,7 @@ fn: function (aClass){
 var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
-if(($receiver = aClass) == nil || $receiver == null){
+if(($receiver = aClass) == null || $receiver.isNil){
 return nil;
 } else {
 aClass;
@@ -4152,7 +4152,7 @@ function $HashedCollection(){return globals.HashedCollection||(typeof HashedColl
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@classesCache"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@classesCache"]=_st($HashedCollection())._new();
 $1=self["@classesCache"];
 } else {
@@ -4321,7 +4321,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@current"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@current"]=globals.HLSelectorsCache.klass.superclass.fn.prototype._new.apply(_st(self), []);
 $1=self["@current"];
 } else {

src/Helios-Commands-Tools.js

@@ -629,9 +629,9 @@ var $3,$2,$4,$1,$receiver;
 $3=self._model();
 $ctx1.sendIdx["model"]=1;
 $2=_st($3)._selectedMethod();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $4=_st(self._model())._selectedClass();
-if(($receiver = $4) == nil || $receiver == null){
+if(($receiver = $4) == null || $receiver.isNil){
 $1="";
 } else {
 var class_;

src/Helios-Core.js

@@ -14,7 +14,7 @@ function $Announcer(){return globals.Announcer||(typeof Announcer=="undefined"?n
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@announcer"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@announcer"]=_st($Announcer())._new();
 $1=self["@announcer"];
 } else {
@@ -38,7 +38,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@environment"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=_st(self._manager())._environment();
 } else {
 $1=$2;
@@ -231,7 +231,7 @@ return _st(_st(each)._name()).__eq(aString);
 return nil;
 }));
 $1=foundClass;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 _st(_st($HLReferences())._openAsTab())._search_(aString);
 } else {
 self._findClass_(foundClass);
@@ -406,7 +406,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$4,$3,$receiver;
 currentProtocol=self._selectedProtocol();
 $1=currentProtocol;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 currentProtocol=self._unclassifiedProtocol();
 $ctx1.sendIdx["unclassifiedProtocol"]=1;
 currentProtocol;
@@ -415,7 +415,7 @@ $1;
 };
 $2=self._selectedMethod();
 $ctx1.sendIdx["selectedMethod"]=1;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $2;
 } else {
 currentProtocol=_st(self._selectedMethod())._protocol();
@@ -790,7 +790,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self._selectedMethod();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._selectedPackage();
 } else {
 var method;
@@ -1040,7 +1040,7 @@ if(smalltalk.assert($4)){
 self._selectedProtocol_(nil);
 $ctx2.sendIdx["selectedProtocol:"]=1;
 };
-if(($receiver = aClass) == nil || $receiver == null){
+if(($receiver = aClass) == null || $receiver.isNil){
 self["@selectedClass"]=nil;
 self["@selectedClass"];
 } else {
@@ -1078,7 +1078,7 @@ return smalltalk.withContext(function($ctx1) {
 var $2,$1,$receiver;
 $2=self._selectedClass();
 $ctx1.sendIdx["selectedClass"]=1;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=$2;
 } else {
 $1=_st(_st(self._selectedClass())._methodDictionary())._at_ifAbsent_(self["@selectedSelector"],(function(){
@@ -1109,7 +1109,7 @@ return self;
 };
 self._withChangesDo_((function(){
 return smalltalk.withContext(function($ctx2) {
-if(($receiver = aCompiledMethod) == nil || $receiver == null){
+if(($receiver = aCompiledMethod) == null || $receiver.isNil){
 self["@selectedSelector"]=nil;
 self["@selectedSelector"];
 } else {
@@ -1559,7 +1559,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$3,$2,$receiver;
 $1=self._wrapper();
 $ctx1.sendIdx["wrapper"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return self;
 } else {
 $1;
@@ -2059,7 +2059,7 @@ var item;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$receiver;
 $1=_st(aListItem)._get_((0));
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return self;
 } else {
 $1;
@@ -2167,7 +2167,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$4,$3,$2,$5,$9,$8,$11,$10,$7,$6,$15,$14,$16,$13,$17,$12,$18,$22,$23,$21,$20,$19,$receiver;
 $1=_st(aListItem)._get_((0));
 $ctx1.sendIdx["get:"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return self;
 } else {
 $1;
@@ -2266,7 +2266,7 @@ globals.HLListWidget.superclass.fn.prototype._focus.apply(_st(self), []);
 $1=_st(self._items())._isEmpty();
 if(! smalltalk.assert($1)){
 $2=self._selectedItem();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self._activateFirstListItem();
 } else {
 $2;
@@ -2289,7 +2289,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@items"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@items"]=self._defaultItems();
 $1=self["@items"];
 } else {
@@ -2388,7 +2388,7 @@ var $1,$receiver;
 globals.HLListWidget.superclass.fn.prototype._refresh.apply(_st(self), []);
 $1=self._selectedItem();
 $ctx1.sendIdx["selectedItem"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 self._ensureVisible_(self._findListItemFor_(self._selectedItem()));
@@ -2668,7 +2668,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 $1=self._next();
 $ctx1.sendIdx["next"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(self._next())._focus();
@@ -2729,7 +2729,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 $1=self._previous();
 $ctx1.sendIdx["previous"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(self._previous())._focus();
@@ -3192,7 +3192,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@callback"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=(function(){
 });
 } else {
@@ -3271,7 +3271,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@informationString"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="";
 } else {
 $1=$2;
@@ -3428,7 +3428,7 @@ function $Announcer(){return globals.Announcer||(typeof Announcer=="undefined"?n
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@announcer"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@announcer"]=_st($Announcer())._new();
 $1=self["@announcer"];
 } else {
@@ -3510,13 +3510,13 @@ function $Environment(){return globals.Environment||(typeof Environment=="undefi
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$3,$4,$5,$6,$7,$receiver;
 $1=_st(window)._opener();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 parent=_st(window)._parent();
 } else {
 parent=$1;
 };
 $2=parent;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=_st($Environment())._new();
 $ctx1.sendIdx["new"]=1;
 return $3;
@@ -3527,7 +3527,7 @@ $4=_st(parent)._at_("requirejs");
 $ctx1.sendIdx["at:"]=1;
 parentSmalltalkGlobals=_st($4)._value_("amber_vm/globals");
 $5=parentSmalltalkGlobals;
-if(($receiver = $5) == nil || $receiver == null){
+if(($receiver = $5) == null || $receiver.isNil){
 $6=_st($Environment())._new();
 $ctx1.sendIdx["new"]=2;
 return $6;
@@ -3553,7 +3553,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@environment"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@environment"]=self._defaultEnvironment();
 $1=self["@environment"];
 } else {
@@ -3593,7 +3593,7 @@ function $OrderedCollection(){return globals.OrderedCollection||(typeof OrderedC
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@history"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@history"]=_st($OrderedCollection())._new();
 $1=self["@history"];
 } else {
@@ -4042,7 +4042,7 @@ function $HLTabsWidget(){return globals.HLTabsWidget||(typeof HLTabsWidget=="und
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@tabsWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@tabsWidget"]=_st($HLTabsWidget())._new();
 $1=self["@tabsWidget"];
 } else {
@@ -4068,7 +4068,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@current"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@current"]=_st(self._basicNew())._initialize();
 $1=self["@current"];
 } else {
@@ -4292,7 +4292,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@actionBlock"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=(function(){
 });
 } else {
@@ -4348,7 +4348,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@cancelBlock"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=(function(){
 });
 } else {
@@ -4387,7 +4387,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@cancelButtonLabel"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="Cancel";
 } else {
 $1=$2;
@@ -4445,7 +4445,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@confirmButtonLabel"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="Confirm";
 } else {
 $1=$2;
@@ -4486,7 +4486,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@confirmationString"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="Confirm";
 } else {
 $1=$2;
@@ -4671,7 +4671,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@multiline"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=true;
 } else {
 $1=$2;
@@ -4732,7 +4732,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@value"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="";
 } else {
 $1=$2;
@@ -4853,7 +4853,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@visible"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=false;
 } else {
 $1=$2;
@@ -4877,7 +4877,7 @@ function $OrderedCollection(){return globals.OrderedCollection||(typeof OrderedC
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@progressBars"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@progressBars"]=_st($OrderedCollection())._new();
 $1=self["@progressBars"];
 } else {
@@ -4992,7 +4992,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@default"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@default"]=self._new();
 $1=self["@default"];
 } else {
@@ -5036,7 +5036,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@cancelCallback"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=(function(){
 });
 } else {
@@ -5092,7 +5092,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@confirmCallback"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=(function(){
 });
 } else {
@@ -5267,7 +5267,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@selectCallback"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=(function(){
 });
 } else {
@@ -5381,7 +5381,7 @@ function $HLTabListWidget(){return globals.HLTabListWidget||(typeof HLTabListWid
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$3,$4,$receiver;
 $1=self["@tabList"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self["@tabList"]=_st($HLTabListWidget())._new();
 self["@tabList"];
 $2=self["@tabList"];
@@ -5415,7 +5415,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@tabs"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=[];
 } else {
 $1=$2;
@@ -5705,7 +5705,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@default"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@default"]=self._new();
 $1=self["@default"];
 } else {
@@ -5805,7 +5805,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=self["@root"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(_st(self["@root"])._asJQuery())._css_put_("visibility","hidden");
@@ -5845,7 +5845,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@label"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="";
 } else {
 $1=$2;
@@ -5969,7 +5969,7 @@ self._unregister();
 $ctx1.sendIdx["unregister"]=1;
 _st(self._widget())._unregister();
 $1=self["@root"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(_st(self["@root"])._asJQuery())._remove();
@@ -6038,7 +6038,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$receiver;
 $1=self["@root"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $2="body"._asJQuery();
 $ctx1.sendIdx["asJQuery"]=1;
 self._appendToJQuery_($2);
@@ -6317,7 +6317,7 @@ function $OrderedCollection(){return globals.OrderedCollection||(typeof OrderedC
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@history"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@history"]=_st($OrderedCollection())._new();
 $1=self["@history"];
 } else {
@@ -6356,7 +6356,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@selectionDisabled"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=false;
 } else {
 $1=$2;
@@ -6752,7 +6752,7 @@ function $OrderedCollection(){return globals.OrderedCollection||(typeof OrderedC
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@tabs"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@tabs"]=_st($OrderedCollection())._new();
 $1=self["@tabs"];
 } else {

src/Helios-Debugger.js

@@ -81,7 +81,7 @@ return smalltalk.withContext(function($ctx2) {
 inspectedContext=_st(inspectedContext)._outerContext();
 inspectedContext;
 $3=inspectedContext;
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 return $3;
 } else {
 return _st(variables)._addAll_(_st(inspectedContext)._locals());
@@ -133,7 +133,7 @@ function $HLDebuggerCodeModel(){return globals.HLDebuggerCodeModel||(typeof HLDe
 return smalltalk.withContext(function($ctx1) { 
 var $2,$3,$4,$6,$7,$8,$9,$5,$10,$1,$receiver;
 $2=self["@codeWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=_st($HLDebuggerCodeWidget())._new();
 $ctx1.sendIdx["new"]=1;
 $4=$3;
@@ -224,7 +224,7 @@ function $HLInspectorWidget(){return globals.HLInspectorWidget||(typeof HLInspec
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@inspectorWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@inspectorWidget"]=_st($HLInspectorWidget())._new();
 $1=self["@inspectorWidget"];
 } else {
@@ -249,7 +249,7 @@ function $HLDebuggerModel(){return globals.HLDebuggerModel||(typeof HLDebuggerMo
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@model"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@model"]=_st($HLDebuggerModel())._new();
 $1=self["@model"];
 } else {
@@ -420,7 +420,7 @@ function $HLStackListWidget(){return globals.HLStackListWidget||(typeof HLStackL
 return smalltalk.withContext(function($ctx1) { 
 var $2,$3,$4,$1,$receiver;
 $2=self["@stackListWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=_st($HLStackListWidget())._on_(self._model());
 _st($3)._next_(self._codeWidget());
 $4=_st($3)._yourself();
@@ -650,7 +650,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=_st(self._browserModel())._nextNode();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 var node;
@@ -674,7 +674,7 @@ var self=this;
 var token;
 return smalltalk.withContext(function($ctx1) { 
 var $4,$3,$2,$1,$5,$9,$8,$7,$11,$10,$6,$15,$14,$13,$12,$receiver;
-if(($receiver = aNode) == nil || $receiver == null){
+if(($receiver = aNode) == null || $receiver.isNil){
 aNode;
 } else {
 self._clearHighlight();
@@ -887,7 +887,7 @@ function $ASTDebugger(){return globals.ASTDebugger||(typeof ASTDebugger=="undefi
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@debugger"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@debugger"]=_st($ASTDebugger())._new();
 $1=self["@debugger"];
 } else {

src/Helios-Helpers.js

@@ -14,7 +14,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$3,$2,$receiver;
 $1=self._next();
 $ctx1.sendIdx["next"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return false;
 } else {
 $1;
@@ -77,7 +77,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 self["@method"]=anObject;
 $1=self._next();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 var nextLink;
@@ -665,7 +665,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=_st(self["@output"])._targetClass();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self._error_("class should not be nil");
 } else {
 $1;

src/Helios-Inspector.js

@@ -113,7 +113,7 @@ function $HLCodeModel(){return globals.HLCodeModel||(typeof HLCodeModel=="undefi
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@code"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@code"]=_st($HLCodeModel())._on_(self._environment());
 $1=self["@code"];
 } else {
@@ -205,7 +205,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@label"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=_st(self._inspectee())._printString();
 } else {
 $1=$2;
@@ -277,7 +277,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@selection"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="";
 } else {
 $1=$2;
@@ -335,7 +335,7 @@ function $Dictionary(){return globals.Dictionary||(typeof Dictionary=="undefined
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@variables"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=_st($Dictionary())._new();
 } else {
 $1=$2;
@@ -398,7 +398,7 @@ function $Announcer(){return globals.Announcer||(typeof Announcer=="undefined"?n
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@announcer"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@announcer"]=_st($Announcer())._new();
 $1=self["@announcer"];
 } else {
@@ -681,7 +681,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@codeWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@codeWidget"]=self._defaultCodeWidget();
 $1=self["@codeWidget"];
 } else {
@@ -748,7 +748,7 @@ function $HLInspectorDisplayWidget(){return globals.HLInspectorDisplayWidget||(t
 return smalltalk.withContext(function($ctx1) { 
 var $2,$3,$4,$1,$receiver;
 $2=self["@displayWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=_st($HLInspectorDisplayWidget())._new();
 _st($3)._inspector_(self);
 $4=_st($3)._yourself();
@@ -865,7 +865,7 @@ function $HLInspectorModel(){return globals.HLInspectorModel||(typeof HLInspecto
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@model"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self._model_(_st($HLInspectorModel())._new());
 $1=self["@model"];
 } else {
@@ -1196,7 +1196,7 @@ function $HLInspectorVariablesWidget(){return globals.HLInspectorVariablesWidget
 return smalltalk.withContext(function($ctx1) { 
 var $2,$3,$4,$1,$receiver;
 $2=self["@variablesWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=_st($HLInspectorVariablesWidget())._new();
 _st($3)._inspector_(self);
 $4=_st($3)._yourself();
@@ -1325,7 +1325,7 @@ function $OrderedCollection(){return globals.OrderedCollection||(typeof OrderedC
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@inspectors"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@inspectors"]=_st($OrderedCollection())._new();
 $1=self["@inspectors"];
 } else {

src/Helios-KeyBindings.js

@@ -514,7 +514,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 binding=self._at_(aString);
 $1=binding;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return self;
 } else {
 $1;
@@ -561,7 +561,7 @@ function $OrderedCollection(){return globals.OrderedCollection||(typeof OrderedC
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@bindings"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@bindings"]=_st($OrderedCollection())._new();
 $1=self["@bindings"];
 } else {
@@ -664,7 +664,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@callback"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@callback"]=(function(value){
 });
 $1=self["@callback"];
@@ -722,7 +722,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@defaultValue"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="";
 } else {
 $1=$2;
@@ -854,7 +854,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@inputCompletion"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=[];
 } else {
 $1=$2;
@@ -892,7 +892,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@message"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@message"]="";
 $1=self["@message"];
 } else {
@@ -931,7 +931,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=self["@wrapper"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return self;
 } else {
 $1;
@@ -955,7 +955,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$4,$6,$8,$10,$9,$7,$5,$11,$12,$13,$3,$14,$15,$receiver;
 $1=self["@wrapper"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self["@wrapper"]=_st(html)._span();
 $ctx1.sendIdx["span"]=1;
 self["@wrapper"];
@@ -1020,7 +1020,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@status"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@status"]="info";
 $1=self["@status"];
 } else {
@@ -1131,7 +1131,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@bindings"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@bindings"]=self._defaultBindings();
 $1=self["@bindings"];
 } else {
@@ -1155,7 +1155,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=self["@selectedBinding"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(self["@selectedBinding"])._release();
@@ -1290,7 +1290,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 binding=_st(self._selectedBinding())._atKey_(_st(anEvent)._which());
 $1=binding;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 self._applyBinding_(binding);
@@ -1437,7 +1437,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@selectedBinding"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._bindings();
 } else {
 $1=$2;
@@ -1499,7 +1499,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@current"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@current"]=globals.HLKeyBinder.klass.superclass.fn.prototype._new.apply(_st(self), []);
 $1=self["@current"];
 } else {
@@ -1793,7 +1793,7 @@ $1=_st(html)._span();
 _st($1)._class_("selected");
 $3=$1;
 $5=_st(self._selectedBinding())._label();
-if(($receiver = $5) == nil || $receiver == null){
+if(($receiver = $5) == null || $receiver.isNil){
 $4="Action";
 } else {
 $4=$5;
@@ -2015,13 +2015,13 @@ if(smalltalk.assert($1)){
 self["@keyDown"]=false;
 self["@keyDown"];
 $2=self["@interval"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $2;
 } else {
 _st(self["@interval"])._clearInterval();
 };
 $3=self["@delay"];
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $3;
 } else {
 _st(self["@delay"])._clearTimeout();
@@ -2044,7 +2044,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@keyDown"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=false;
 } else {
 $1=$2;
@@ -2068,7 +2068,7 @@ function $Dictionary(){return globals.Dictionary||(typeof Dictionary=="undefined
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@keyBindings"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@keyBindings"]=_st($Dictionary())._new();
 $1=self["@keyBindings"];
 } else {
@@ -2110,7 +2110,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@repeatInterval"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._defaultRepeatInterval();
 } else {
 $1=$2;

src/Helios-References.js

@@ -155,7 +155,7 @@ function $HLClassReferencesListWidget(){return globals.HLClassReferencesListWidg
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@classReferencesListWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@classReferencesListWidget"]=_st($HLClassReferencesListWidget())._on_(self._model());
 self["@classReferencesListWidget"];
 $1=_st(self["@classReferencesListWidget"])._next_(self._regexpListWidget());
@@ -181,7 +181,7 @@ function $HLImplementorsListWidget(){return globals.HLImplementorsListWidget||(t
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@implementorsListWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@implementorsListWidget"]=_st($HLImplementorsListWidget())._on_(self._model());
 self["@implementorsListWidget"];
 $1=_st(self["@implementorsListWidget"])._next_(self._classReferencesListWidget());
@@ -207,7 +207,7 @@ function $HLReferencesModel(){return globals.HLReferencesModel||(typeof HLRefere
 return smalltalk.withContext(function($ctx1) { 
 var $2,$3,$4,$1,$receiver;
 $2=self["@model"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=_st($HLReferencesModel())._new();
 _st($3)._environment_(_st(self._manager())._environment());
 $4=_st($3)._yourself();
@@ -250,7 +250,7 @@ function $HLRegexpListWidget(){return globals.HLRegexpListWidget||(typeof HLRege
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@regexpListWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@regexpListWidget"]=_st($HLRegexpListWidget())._on_(self._model());
 self["@regexpListWidget"];
 $1=_st(self["@regexpListWidget"])._next_(self._sourceCodeWidget());
@@ -341,7 +341,7 @@ function $HLSendersListWidget(){return globals.HLSendersListWidget||(typeof HLSe
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@sendersListWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@sendersListWidget"]=_st($HLSendersListWidget())._on_(self._model());
 self["@sendersListWidget"];
 $1=_st(self["@sendersListWidget"])._next_(self._implementorsListWidget());
@@ -367,7 +367,7 @@ function $HLBrowserCodeWidget(){return globals.HLBrowserCodeWidget||(typeof HLBr
 return smalltalk.withContext(function($ctx1) { 
 var $2,$3,$4,$1,$receiver;
 $2=self["@sourceCodeWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=_st($HLBrowserCodeWidget())._new();
 _st($3)._browserModel_(self._model());
 $4=_st($3)._yourself();
@@ -535,7 +535,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$3,$receiver;
 var $early={};
 try {
-if(($receiver = aMethod) == nil || $receiver == null){
+if(($receiver = aMethod) == null || $receiver.isNil){
 return self;
 } else {
 aMethod;
@@ -847,7 +847,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$receiver;
 $1=self["@classesAndMetaclassesCache"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self._updateClassesAndMetaclassesCache();
 } else {
 $1;
@@ -929,7 +929,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$receiver;
 $1=self["@methodsCache"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self._updateMethodsCache();
 } else {
 $1;
@@ -979,7 +979,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 $1=self._selectedMethod();
 $ctx1.sendIdx["selectedMethod"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return self;
 } else {
 $1;

src/Helios-Transcript.js

@@ -86,7 +86,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=self["@textarea"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(_st(self["@textarea"])._asJQuery())._append_(_st(aString)._asString());
@@ -206,7 +206,7 @@ function $OrderedCollection(){return globals.OrderedCollection||(typeof OrderedC
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@transcripts"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@transcripts"]=_st($OrderedCollection())._new();
 $1=self["@transcripts"];
 } else {

src/Helios-Workspace.js

@@ -13,7 +13,7 @@ function $Announcer(){return globals.Announcer||(typeof Announcer=="undefined"?n
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@announcer"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@announcer"]=_st($Announcer())._new();
 $1=self["@announcer"];
 } else {
@@ -98,7 +98,7 @@ function $HLManager(){return globals.HLManager||(typeof HLManager=="undefined"?n
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@environment"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=_st(_st($HLManager())._current())._environment();
 } else {
 $1=$2;
@@ -152,7 +152,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@receiver"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@receiver"]=self._defaultReceiver();
 $1=self["@receiver"];
 } else {
@@ -351,7 +351,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 _st(self["@editor"])._setValue_(aString);
 $1=self["@state"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 self._updateState();
@@ -569,7 +569,7 @@ function $HLCodeModel(){return globals.HLCodeModel||(typeof HLCodeModel=="undefi
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@model"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@model"]=_st($HLCodeModel())._new();
 $1=self["@model"];
 } else {
@@ -1426,7 +1426,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@methodContents"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="";
 } else {
 $1=$2;
@@ -1675,7 +1675,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$receiver;
 class_=_st(anAnnouncement)._item();
 $1=class_;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $2=self._contents_("");
 $ctx1.sendIdx["contents:"]=1;
 return $2;
@@ -1745,7 +1745,7 @@ $5=self._browserModel();
 $ctx1.sendIdx["browserModel"]=2;
 $4=_st($5)._selectedMethod();
 $ctx1.sendIdx["selectedMethod"]=1;
-if(($receiver = $4) == nil || $receiver == null){
+if(($receiver = $4) == null || $receiver.isNil){
 return self;
 } else {
 $4;
@@ -1776,7 +1776,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$receiver;
 method=_st(anAnnouncement)._item();
 $1=method;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $2=self._contents_("");
 $ctx1.sendIdx["contents:"]=1;
 return $2;
@@ -1803,7 +1803,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$receiver;
 package_=_st(anAnnouncement)._item();
 $1=package_;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $2=self._contents_("");
 $ctx1.sendIdx["contents:"]=1;
 return $2;
@@ -1883,7 +1883,7 @@ $2=self._browserModel();
 $ctx1.sendIdx["browserModel"]=1;
 $1=_st($2)._selectedClass();
 $ctx1.sendIdx["selectedClass"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $3=self._contents_("");
 $ctx1.sendIdx["contents:"]=1;
 return $3;
@@ -1927,7 +1927,7 @@ $2=self._browserModel();
 $ctx1.sendIdx["browserModel"]=1;
 $1=_st($2)._selectedClass();
 $ctx1.sendIdx["selectedClass"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $3=self._contents_("");
 $ctx1.sendIdx["contents:"]=1;
 return $3;
@@ -2175,7 +2175,7 @@ function $HLCodeWidget(){return globals.HLCodeWidget||(typeof HLCodeWidget=="und
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@codeWidget"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@codeWidget"]=_st($HLCodeWidget())._new();
 $1=self["@codeWidget"];
 } else {
@@ -2269,7 +2269,7 @@ function $HLTranscript(){return globals.HLTranscript||(typeof HLTranscript=="und
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@transcript"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@transcript"]=_st($HLTranscript())._new();
 $1=self["@transcript"];
 } else {

src/IDE.js

@@ -100,7 +100,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$receiver;
 $1=self["@nodes"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self["@nodes"]=self._getNodes();
 self["@nodes"];
 } else {
@@ -564,7 +564,7 @@ var $1,$2,$receiver;
 result=self._eval_(self._currentLineOrSelection());
 $1=self._onDoIt();
 $ctx1.sendIdx["onDoIt"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(self._onDoIt())._value();
@@ -860,7 +860,7 @@ function $DoIt(){return globals.DoIt||(typeof DoIt=="undefined"?nil:DoIt)}
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@receiver"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=_st($DoIt())._new();
 } else {
 $1=$2;
@@ -1552,7 +1552,7 @@ function $Array(){return globals.Array||(typeof Array=="undefined"?nil:Array)}
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@tabs"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@tabs"]=_st($Array())._new();
 $1=self["@tabs"];
 } else {
@@ -1630,7 +1630,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@current"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@current"]=globals.TabManager.klass.superclass.fn.prototype._new.apply(_st(self), []);
 $1=self["@current"];
 } else {
@@ -2087,7 +2087,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$3,$4,$6,$7,$5,$8,$9,$10,$11,$12,$13,$receiver;
 stream=""._writeStream();
 $1=self["@selectedClass"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $2=self._classDeclarationTemplate();
 return $2;
 } else {
@@ -2197,7 +2197,7 @@ function $Package(){return globals.Package||(typeof Package=="undefined"?nil:Pac
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=self["@selectedPackage"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(_st($Package())._named_(self["@selectedPackage"]))._commit();
@@ -2226,7 +2226,7 @@ currentEditLine=_st($1)._getCursor();
 $2=_st(self["@selectedTab"]).__eq("comment");
 if(smalltalk.assert($2)){
 $3=self["@selectedClass"];
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $3;
 } else {
 self._compileClassComment();
@@ -2331,7 +2331,7 @@ var $early={};
 try {
 source=_st(self["@sourceArea"])._val();
 $1=self["@selectedProtocol"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self["@selectedProtocol"]=_st(self["@selectedMethod"])._protocol();
 self["@selectedProtocol"];
 } else {
@@ -2444,7 +2444,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=self["@saveButton"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(self["@saveButton"])._at_put_("disabled",true);
@@ -2556,7 +2556,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@selectedClass"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="Browser (nil)";
 } else {
 $1="Browser: ".__comma(_st(self["@selectedClass"])._name());
@@ -2581,7 +2581,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$3,$4,$receiver;
 stream=""._writeStream();
 $1=self["@selectedClass"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 $2=stream;
@@ -2622,7 +2622,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@selectedMethod"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._dummyMethodSource();
 } else {
 $1=_st(self["@selectedMethod"])._source();
@@ -2652,7 +2652,7 @@ $2=[];
 return $2;
 };
 $3=self["@selectedClass"];
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $3;
 } else {
 $4=_st(self["@selectedTab"]).__eq("instance");
@@ -2664,9 +2664,9 @@ klass=_st(self["@selectedClass"])._class();
 klass;
 };
 $7=self["@selectedProtocol"];
-if(($receiver = $7) == nil || $receiver == null){
+if(($receiver = $7) == null || $receiver.isNil){
 $8=klass;
-if(($receiver = $8) == nil || $receiver == null){
+if(($receiver = $8) == null || $receiver.isNil){
 $6=[];
 } else {
 $6=_st(_st(klass)._methodDictionary())._values();
@@ -2732,7 +2732,7 @@ function $Array(){return globals.Array||(typeof Array=="undefined"?nil:Array)}
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$3,$4,$5,$6,$7,$8,$receiver;
 $1=self["@selectedClass"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 $2=_st(self["@selectedTab"]).__eq("comment");
@@ -2887,7 +2887,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$receiver;
 newName=self._prompt_("Rename package ".__comma(self["@selectedPackage"]));
 $1=newName;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 $2=_st(newName)._notEmpty();
@@ -3462,7 +3462,7 @@ $2=self._declarationSource();
 return $2;
 };
 $6=self["@selectedClass"];
-if(($receiver = $6) == nil || $receiver == null){
+if(($receiver = $6) == null || $receiver.isNil){
 $5="";
 } else {
 $5=self._classCommentSource();
@@ -3820,7 +3820,7 @@ var $1,$2,$3,$receiver;
 $1=_st(_st(self["@sourceArea"])._val()).__eq(self._source());
 if(smalltalk.assert($1)){
 $2=self["@saveButton"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $2;
 } else {
 _st(self["@saveButton"])._at_put_("disabled",true);
@@ -3829,7 +3829,7 @@ self["@unsavedChanges"]=false;
 self["@unsavedChanges"];
 } else {
 $3=self["@saveButton"];
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $3;
 } else {
 _st(self["@saveButton"])._removeAt_("disabled");
@@ -4345,7 +4345,7 @@ return self._selectContext_(aContext);
 }, function($ctx2) {$ctx2.fillBlock({},$ctx1,2)})}));
 $4=_st(aContext)._outerContext();
 $ctx1.sendIdx["outerContext"]=1;
-if(($receiver = $4) == nil || $receiver == null){
+if(($receiver = $4) == null || $receiver.isNil){
 $4;
 } else {
 self._renderContext_on_(_st(aContext)._outerContext(),html);
@@ -4486,7 +4486,7 @@ return smalltalk.withContext(function($ctx1) {
 var $2,$1,$receiver;
 $2=self._method();
 $ctx1.sendIdx["method"]=1;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="Method doesn't exist!";
 } else {
 $1=_st(self._method())._source();
@@ -4563,7 +4563,7 @@ var $1,$2,$3,$receiver;
 $1=_st(_st(self["@sourceArea"])._val()).__eq(self._source());
 if(smalltalk.assert($1)){
 $2=self["@saveButton"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $2;
 } else {
 _st(self["@saveButton"])._at_put_("disabled",true);
@@ -4572,7 +4572,7 @@ self["@unsavedChanges"]=false;
 self["@unsavedChanges"];
 } else {
 $3=self["@saveButton"];
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $3;
 } else {
 _st(self["@saveButton"])._removeAt_("disabled");
@@ -4634,7 +4634,7 @@ return _st(li)._class_("selected");
 }, function($ctx3) {$ctx3.fillBlock({key:key,value:value},$ctx2,4)})}));
 }, function($ctx2) {$ctx2.fillBlock({html:html,li:li},$ctx1,1)})}));
 $7=self["@selectedVariable"];
-if(($receiver = $7) == nil || $receiver == null){
+if(($receiver = $7) == null || $receiver.isNil){
 _st(self["@inspectButton"])._at_put_("disabled",true);
 } else {
 _st(self["@inspectButton"])._removeAt_("disabled");
@@ -4708,7 +4708,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@label"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="Inspector (nil)";
 } else {
 $1=$2;
@@ -5279,7 +5279,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$receiver;
 $1=self["@textarea"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self._open();
 } else {
 $1;
@@ -5306,7 +5306,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@current"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@current"]=globals.IDETranscript.klass.superclass.fn.prototype._new.apply(_st(self), []);
 $1=self["@current"];
 } else {
@@ -5386,7 +5386,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@percent"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=(0);
 } else {
 $1=$2;
@@ -5531,7 +5531,7 @@ function $Array(){return globals.Array||(typeof Array=="undefined"?nil:Array)}
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@implementors"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@implementors"]=_st($Array())._new();
 $1=self["@implementors"];
 } else {
@@ -5588,7 +5588,7 @@ function $Array(){return globals.Array||(typeof Array=="undefined"?nil:Array)}
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@matches"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@matches"]=_st($Array())._new();
 $1=self["@matches"];
 } else {
@@ -5651,7 +5651,7 @@ function $Array(){return globals.Array||(typeof Array=="undefined"?nil:Array)}
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@referencedClasses"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@referencedClasses"]=_st($Array())._new();
 $1=self["@referencedClasses"];
 } else {
@@ -5944,7 +5944,7 @@ function $Array(){return globals.Array||(typeof Array=="undefined"?nil:Array)}
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@senders"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@senders"]=_st($Array())._new();
 $1=self["@senders"];
 } else {
@@ -5979,7 +5979,7 @@ return self["@timer"];
 $2=_st($1)._onKeyDown_((function(){
 return smalltalk.withContext(function($ctx2) {
 $3=self["@timer"];
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 return $3;
 } else {
 return _st(self["@timer"])._clearTimeout();
@@ -6477,7 +6477,7 @@ function $ProgressBar(){return globals.ProgressBar||(typeof ProgressBar=="undefi
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@progressBar"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@progressBar"]=_st($ProgressBar())._new();
 $1=self["@progressBar"];
 } else {
@@ -6756,7 +6756,7 @@ function $Array(){return globals.Array||(typeof Array=="undefined"?nil:Array)}
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@selectedCategories"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@selectedCategories"]=_st($Array())._new();
 $1=self["@selectedCategories"];
 } else {
@@ -6781,7 +6781,7 @@ function $Array(){return globals.Array||(typeof Array=="undefined"?nil:Array)}
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@selectedClasses"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@selectedClasses"]=_st($Array())._new();
 $1=self["@selectedClasses"];
 } else {

src/Kernel-Announcements.js

@@ -107,7 +107,7 @@ $4=_st(self._announcementClass())._name();
 $ctx1.sendIdx["name"]=1;
 $2=_st($3)._at_($4);
 $ctx1.sendIdx["at:"]=1;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 return false;
 } else {
 var class_;
@@ -463,7 +463,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@current"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@current"]=globals.SystemAnnouncer.klass.superclass.fn.prototype._new.apply(_st(self), []);
 $1=self["@current"];
 } else {

src/Kernel-Classes.js

@@ -49,13 +49,13 @@ _st($4)._addElement_($5);
 };
 self._basicAddCompiledMethod_(aMethod);
 $6=oldMethod;
-if(($receiver = $6) == nil || $receiver == null){
+if(($receiver = $6) == null || $receiver.isNil){
 $6;
 } else {
 self._removeProtocolIfEmpty_(_st(oldMethod)._protocol());
 };
 $7=oldMethod;
-if(($receiver = $7) == nil || $receiver == null){
+if(($receiver = $7) == null || $receiver.isNil){
 $8=_st($MethodAdded())._new();
 $ctx1.sendIdx["new"]=1;
 _st($8)._method_(aMethod);
@@ -91,7 +91,7 @@ var $1,$2,$receiver;
 result=_st(self._instanceVariableNames())._copy();
 $1=self._superclass();
 $ctx1.sendIdx["superclass"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(result)._addAll_(_st(self._superclass())._allInstanceVariableNames());
@@ -193,7 +193,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$5,$4,$6,$3,$receiver;
 $1=self._superclass();
 $ctx1.sendIdx["superclass"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $2=[];
 return $2;
 } else {
@@ -298,7 +298,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self._basicAt_("comment");
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="";
 } else {
 $1=$2;
@@ -476,7 +476,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$4,$3,$2,$receiver;
 $1=self._superclass();
 $ctx1.sendIdx["superclass"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return false;
 } else {
 $1;
@@ -1151,7 +1151,7 @@ return smalltalk.withContext(function($ctx1) {
 var $2,$1,$receiver;
 $2=self._package();
 $ctx1.sendIdx["package"]=1;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="Unclassified";
 } else {
 $1=_st(self._package())._name();
@@ -1633,7 +1633,7 @@ var $1,$2,$3,$4,$receiver;
 theClass=_st(_st($Smalltalk())._globals())._at_(className);
 thePackage=_st($Package())._named_(packageName);
 $1=theClass;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(theClass)._package_(thePackage);
@@ -2067,7 +2067,7 @@ function $ClassAdded(){return globals.ClassAdded||(typeof ClassAdded=="undefined
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$3,$4,$5,$receiver;
 $1=self._instanceVariableNamesFor_(ivarNames);
-if(($receiver = packageName) == nil || $receiver == null){
+if(($receiver = packageName) == null || $receiver.isNil){
 $2="unclassified";
 } else {
 $2=packageName;

src/Kernel-Collections.js

@@ -5490,7 +5490,7 @@ return smalltalk.withContext(function($ctx1) {
 var $2,$1,$receiver;
 bucket=self._bucketsOfElement_(anObject);
 $2=_st(bucket)._second();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 var object,slowBucket;
 object=_st(bucket)._first();
 $ctx1.sendIdx["first"]=1;
@@ -5678,7 +5678,7 @@ return smalltalk.withContext(function($ctx1) {
 var $2,$3,$4,$1,$receiver;
 bucket=self._bucketsOfElement_(anObject);
 $2=_st(bucket)._second();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=_st(bucket)._third();
 $4=_st(bucket)._first();
 $ctx1.sendIdx["first"]=1;
@@ -5816,7 +5816,7 @@ var $early={};
 try {
 bucket=self._bucketsOfElement_(anObject);
 $2=_st(bucket)._second();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=_st(bucket)._third();
 $4=_st(bucket)._first();
 $ctx1.sendIdx["first"]=1;
@@ -6427,7 +6427,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@position"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@position"]=(0);
 $1=self["@position"];
 } else {

src/Kernel-ImportExport.js

@@ -1793,7 +1793,7 @@ function $Array(){return globals.Array||(typeof Array=="undefined"?nil:Array)}
 return smalltalk.withContext(function($ctx1) { 
 var $1,$3,$2,$receiver;
 $1=_st($Smalltalk())._amdRequire();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self._error_("AMD loader not present");
 } else {
 var require;
@@ -1839,7 +1839,7 @@ function $Smalltalk(){return globals.Smalltalk||(typeof Smalltalk=="undefined"?n
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=_st($Smalltalk())._amdRequire();
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._error_("AMD loader not present");
 } else {
 var require;
@@ -2139,7 +2139,7 @@ fn: function (anObject){
 var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$3,$4,$2,$receiver;
-if(($receiver = anObject) == nil || $receiver == null){
+if(($receiver = anObject) == null || $receiver.isNil){
 $1=self._for_(self._defaultType());
 $ctx1.sendIdx["for:"]=1;
 return $1;
@@ -2204,7 +2204,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 $1=_st(aClass)._type();
 $ctx1.sendIdx["type"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(self["@registry"])._at_put_(_st(aClass)._type(),aClass);
@@ -2329,7 +2329,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@namespace"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._defaultNamespace();
 } else {
 $1=$2;

src/Kernel-Infrastructure.js

@@ -14,7 +14,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 $1=_st(anError)._context();
 $ctx1.sendIdx["context"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 self._logErrorContext_(_st(anError)._context());
@@ -54,7 +54,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 $1=_st(aContext)._home();
 $ctx1.sendIdx["home"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 self._logContext_(_st(aContext)._home());
@@ -92,12 +92,12 @@ fn: function (aContext){
 var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
-if(($receiver = aContext) == nil || $receiver == null){
+if(($receiver = aContext) == null || $receiver.isNil){
 aContext;
 } else {
 $1=_st(aContext)._home();
 $ctx1.sendIdx["home"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 self._logContext_(_st(aContext)._home());
@@ -331,7 +331,7 @@ var $1,$2,$receiver;
 protocols=_st(aClass)._protocols();
 $1=_st(aClass)._superclass();
 $ctx1.sendIdx["superclass"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(protocols)._addAll_(self._availableProtocolsFor_(_st(aClass)._superclass()));
@@ -375,7 +375,7 @@ function $Smalltalk(){return globals.Smalltalk||(typeof Smalltalk=="undefined"?n
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=_st(_st($Smalltalk())._globals())._at_(_st(aString)._asSymbol());
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._error_("Invalid class name");
 } else {
 $1=$2;
@@ -493,7 +493,7 @@ function $ClassBuilder(){return globals.ClassBuilder||(typeof ClassBuilder=="und
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$receiver;
 $1=_st(_st($Smalltalk())._globals())._at_(aClassName);
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 $2=_st("A class named ".__comma(aClassName)).__comma(" already exists");
@@ -601,7 +601,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$2,$receiver;
 package_=_st($Package())._named_(aPackageName);
 $1=package_;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self._error_("Invalid package name");
 } else {
 $1;
@@ -836,7 +836,7 @@ function $ClassBuilder(){return globals.ClassBuilder||(typeof ClassBuilder=="und
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$receiver;
 $1=_st(_st($Smalltalk())._globals())._at_(aClassName);
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 $2=_st("A class named ".__comma(aClassName)).__comma(" already exists");
@@ -1085,7 +1085,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self._lookupProperty_(_st(_st(aMessage)._selector())._asJavaScriptSelector());
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=globals.JSObjectProxy.superclass.fn.prototype._doesNotUnderstand_.apply(_st(self), [aMessage]);
 } else {
 var jsSelector;
@@ -1636,7 +1636,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@dirty"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=false;
 } else {
 $1=$2;
@@ -1859,7 +1859,7 @@ function $PackageTransport(){return globals.PackageTransport||(typeof PackageTra
 return smalltalk.withContext(function($ctx1) { 
 var $2,$3,$4,$1,$receiver;
 $2=self["@transport"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $3=_st($PackageTransport())._fromJson_(self._basicTransport());
 _st($3)._package_(self);
 $4=_st($3)._yourself();
@@ -2068,7 +2068,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=_st(anAnnouncement)._theClass();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 var theClass;
@@ -2092,7 +2092,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=_st(_st(anAnnouncement)._method())._package();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 var package_;
@@ -2150,7 +2150,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@current"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@current"]=self._new();
 $1=self["@current"];
 } else {
@@ -2195,7 +2195,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@worker"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._error_("ajax: not available");
 } else {
 $1=_st(self["@worker"])._ajax_(anObject);
@@ -2218,7 +2218,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@worker"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._error_("alert: not available");
 } else {
 $1=_st(self["@worker"])._alert_(aString);
@@ -2241,7 +2241,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@worker"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._error_("confirm: not available");
 } else {
 $1=_st(self["@worker"])._confirm_(aString);
@@ -2305,7 +2305,7 @@ function $BrowserInterface(){return globals.BrowserInterface||(typeof BrowserInt
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 globals.PlatformInterface.klass.superclass.fn.prototype._initialize.apply(_st(self), []);
-if(($receiver = $BrowserInterface()) == nil || $receiver == null){
+if(($receiver = $BrowserInterface()) == null || $receiver.isNil){
 $BrowserInterface();
 } else {
 candidate=_st($BrowserInterface())._new();
@@ -2333,7 +2333,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@worker"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._error_("prompt: not available");
 } else {
 $1=_st(self["@worker"])._prompt_(aString);
@@ -2356,7 +2356,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@worker"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._error_("prompt: not available");
 } else {
 $1=_st(self["@worker"])._prompt_default_(aString,defaultString);
@@ -2447,7 +2447,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=self._current();
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self._register_(anObject);
 } else {
 $1;
@@ -3445,7 +3445,7 @@ return self._error_($1);
 $ctx2.sendIdx["error:"]=1;
 }, function($ctx2) {$ctx2.fillBlock({},$ctx1,1)})}));
 $2=self._packageAt_(newName);
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $2;
 } else {
 self._error_("Already exists a package called: ".__comma(newName));
@@ -3535,7 +3535,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@current"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@current"]=globals.SmalltalkImage.klass.superclass.fn.prototype._new.apply(_st(self), []);
 $1=self["@current"];
 } else {

src/Kernel-Methods.js

@@ -646,7 +646,7 @@ $ctx1.sendIdx["methodClass"]=1;
 superclass=_st($1)._superclass();
 $ctx1.sendIdx["superclass"]=1;
 $2=superclass;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 return false;
 } else {
 $2;
@@ -708,7 +708,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$3,$2,$5,$4,$6,$receiver;
 $1=self._methodClass();
 $ctx1.sendIdx["methodClass"]=1;
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return nil;
 } else {
 $1;
@@ -745,7 +745,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self._basicAt_("protocol");
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._defaultProtocol();
 } else {
 $1=$2;
@@ -778,7 +778,7 @@ _st($1)._oldProtocol_(oldProtocol);
 $2=_st($1)._yourself();
 _st(_st($SystemAnnouncer())._current())._announce_($2);
 $3=self._methodClass();
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $3;
 } else {
 var methodClass;
@@ -873,7 +873,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self._basicAt_("source");
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1="";
 } else {
 $1=$2;
@@ -1032,7 +1032,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@maxPoolSize"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=self._defaultMaxPoolSize();
 } else {
 $1=$2;
@@ -1072,7 +1072,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@default"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@default"]=self._new();
 $1=self["@default"];
 } else {
@@ -1700,7 +1700,7 @@ return smalltalk.withContext(function($ctx1) {
 var $2,$5,$4,$3,$1,$receiver;
 $2=self._methodContext();
 $ctx1.sendIdx["methodContext"]=1;
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 $1=$2;
 } else {
 $5=self._methodContext();
@@ -1731,7 +1731,7 @@ if(! smalltalk.assert($1)){
 return self;
 };
 $3=self._outerContext();
-if(($receiver = $3) == nil || $receiver == null){
+if(($receiver = $3) == null || $receiver.isNil){
 $2=$3;
 } else {
 var outer;

src/Kernel-Tests.js

@@ -1051,7 +1051,7 @@ function $Smalltalk(){return globals.Smalltalk||(typeof Smalltalk=="undefined"?n
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=self["@theClass"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st($Smalltalk())._removeClass_(self["@theClass"]);
@@ -7826,7 +7826,7 @@ self._deny_($1);
 $ctx1.sendIdx["deny:"]=1;
 $5=_st($Object())._new();
 $ctx1.sendIdx["new"]=2;
-if(($receiver = $5) == nil || $receiver == null){
+if(($receiver = $5) == null || $receiver.isNil){
 $4=true;
 } else {
 $4=$5;
@@ -7835,7 +7835,7 @@ $3=_st($4).__eq(true);
 self._deny_($3);
 $7=_st($Object())._new();
 $ctx1.sendIdx["new"]=3;
-if(($receiver = $7) == nil || $receiver == null){
+if(($receiver = $7) == null || $receiver.isNil){
 $6=$7;
 } else {
 $6=true;
@@ -7844,7 +7844,7 @@ self._assert_equals_($6,true);
 $ctx1.sendIdx["assert:equals:"]=1;
 $9=_st($Object())._new();
 $ctx1.sendIdx["new"]=4;
-if(($receiver = $9) == nil || $receiver == null){
+if(($receiver = $9) == null || $receiver.isNil){
 $8=false;
 } else {
 $8=true;
@@ -7852,7 +7852,7 @@ $8=true;
 self._assert_equals_($8,true);
 $ctx1.sendIdx["assert:equals:"]=2;
 $11=_st($Object())._new();
-if(($receiver = $11) == nil || $receiver == null){
+if(($receiver = $11) == null || $receiver.isNil){
 $10=false;
 } else {
 $10=true;
@@ -8833,14 +8833,14 @@ fn: function (){
 var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$3,$2,$4,$6,$5,$receiver;
-if(($receiver = nil) == nil || $receiver == null){
+if(($receiver = nil) == null || $receiver.isNil){
 $1=true;
 } else {
 $1=nil;
 };
 self._assert_equals_($1,true);
 $ctx1.sendIdx["assert:equals:"]=1;
-if(($receiver = nil) == nil || $receiver == null){
+if(($receiver = nil) == null || $receiver.isNil){
 $3=nil;
 } else {
 $3=true;
@@ -8849,13 +8849,13 @@ $2=_st($3).__eq(true);
 $ctx1.sendIdx["="]=1;
 self._deny_($2);
 $ctx1.sendIdx["deny:"]=1;
-if(($receiver = nil) == nil || $receiver == null){
+if(($receiver = nil) == null || $receiver.isNil){
 $4=true;
 } else {
 $4=false;
 };
 self._assert_equals_($4,true);
-if(($receiver = nil) == nil || $receiver == null){
+if(($receiver = nil) == null || $receiver.isNil){
 $6=false;
 } else {
 $6=true;

src/SUnit.js

@@ -396,7 +396,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=self["@asyncTimeout"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $1;
 } else {
 _st(self["@asyncTimeout"])._clearTimeout();

src/Spaces.js

@@ -51,7 +51,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$receiver;
 $1=self["@frame"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 return self;
 } else {
 $1;

src/Web.js

@@ -1144,7 +1144,7 @@ return smalltalk.withContext(function($ctx1) {
 var $1,$receiver;
 globals.HTMLCanvas.superclass.fn.prototype._initialize.apply(_st(self), []);
 $1=self["@root"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 self["@root"]=_st($TagBrush())._fromString_canvas_("div",self);
 self["@root"];
 } else {
@@ -2351,7 +2351,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $2,$1,$receiver;
 $2=self["@snippets"];
-if(($receiver = $2) == nil || $receiver == null){
+if(($receiver = $2) == null || $receiver.isNil){
 self["@snippets"]=globals.HashedCollection._newFromPairs_([]);
 $1=self["@snippets"];
 } else {
@@ -2412,7 +2412,7 @@ var self=this;
 return smalltalk.withContext(function($ctx1) { 
 var $1,$2,$3,$receiver;
 $1=self["@current"];
-if(($receiver = $1) == nil || $receiver == null){
+if(($receiver = $1) == null || $receiver.isNil){
 $2=globals.HTMLSnippet.klass.superclass.fn.prototype._new.apply(_st(self), []);
 _st($2)._initializeFromJQuery_(_st(document)._asJQuery());
 $3=_st($2)._yourself();