|  | @@ -99,7 +99,7 @@ var self=this;
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $1,$2;
 | 
	
		
			
				|  |  |  $1=self["@nodes"];
 | 
	
		
			
				|  |  | -if(($receiver = $1) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $1) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  self["@nodes"]=self._getNodes();
 | 
	
		
			
				|  |  |  self["@nodes"];
 | 
	
		
			
				|  |  |  } else {
 | 
	
	
		
			
				|  | @@ -558,7 +558,7 @@ return smalltalk.withContext(function($ctx1) {
 | 
	
		
			
				|  |  |  var $1,$2;
 | 
	
		
			
				|  |  |  result=self._eval_(self._currentLineOrSelection());
 | 
	
		
			
				|  |  |  $1=self._onDoIt();
 | 
	
		
			
				|  |  | -if(($receiver = $1) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $1) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $1;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  _st(self._onDoIt())._value();
 | 
	
	
		
			
				|  | @@ -831,7 +831,7 @@ function $DoIt(){return smalltalk.DoIt||(typeof DoIt=="undefined"?nil:DoIt)}
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@receiver"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $1=_st($DoIt())._new();
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $1=$2;
 | 
	
	
		
			
				|  | @@ -1472,7 +1472,7 @@ function $Array(){return smalltalk.Array||(typeof Array=="undefined"?nil:Array)}
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@tabs"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  self["@tabs"]=_st($Array())._new();
 | 
	
		
			
				|  |  |  $1=self["@tabs"];
 | 
	
		
			
				|  |  |  } else {
 | 
	
	
		
			
				|  | @@ -1549,7 +1549,7 @@ var self=this;
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@current"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  self["@current"]=smalltalk.TabManager.klass.superclass.fn.prototype._new.apply(_st(self), []);
 | 
	
		
			
				|  |  |  $1=self["@current"];
 | 
	
		
			
				|  |  |  } else {
 | 
	
	
		
			
				|  | @@ -1995,7 +1995,7 @@ return smalltalk.withContext(function($ctx1) {
 | 
	
		
			
				|  |  |  var $1,$2,$3,$4,$5,$6,$7;
 | 
	
		
			
				|  |  |  stream=""._writeStream();
 | 
	
		
			
				|  |  |  $1=self["@selectedClass"];
 | 
	
		
			
				|  |  | -if(($receiver = $1) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $1) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $2=self._classDeclarationTemplate();
 | 
	
		
			
				|  |  |  return $2;
 | 
	
		
			
				|  |  |  } else {
 | 
	
	
		
			
				|  | @@ -2082,7 +2082,7 @@ function $Package(){return smalltalk.Package||(typeof Package=="undefined"?nil:P
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $1;
 | 
	
		
			
				|  |  |  $1=self["@selectedPackage"];
 | 
	
		
			
				|  |  | -if(($receiver = $1) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $1) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $1;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  _st(_st($Package())._named_(self["@selectedPackage"]))._commit();
 | 
	
	
		
			
				|  | @@ -2109,7 +2109,7 @@ currentEditLine=_st(_st(self["@sourceArea"])._editor())._getCursor();
 | 
	
		
			
				|  |  |  $1=_st(self["@selectedTab"]).__eq("comment");
 | 
	
		
			
				|  |  |  if(smalltalk.assert($1)){
 | 
	
		
			
				|  |  |  $2=self["@selectedClass"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $2;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  self._compileClassComment();
 | 
	
	
		
			
				|  | @@ -2212,7 +2212,7 @@ var $early={};
 | 
	
		
			
				|  |  |  try {
 | 
	
		
			
				|  |  |  source=_st(self["@sourceArea"])._val();
 | 
	
		
			
				|  |  |  $1=self["@selectedProtocol"];
 | 
	
		
			
				|  |  | -if(($receiver = $1) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $1) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  self["@selectedProtocol"]=_st(self["@selectedMethod"])._category();
 | 
	
		
			
				|  |  |  self["@selectedProtocol"];
 | 
	
		
			
				|  |  |  } else {
 | 
	
	
		
			
				|  | @@ -2317,7 +2317,7 @@ var self=this;
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $1;
 | 
	
		
			
				|  |  |  $1=self["@saveButton"];
 | 
	
		
			
				|  |  | -if(($receiver = $1) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $1) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $1;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  _st(self["@saveButton"])._at_put_("disabled",true);
 | 
	
	
		
			
				|  | @@ -2430,7 +2430,7 @@ var self=this;
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@selectedClass"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $1="Browser (nil)";
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $1="Browser: ".__comma(_st(self["@selectedClass"])._name());
 | 
	
	
		
			
				|  | @@ -2455,7 +2455,7 @@ return smalltalk.withContext(function($ctx1) {
 | 
	
		
			
				|  |  |  var $1,$2,$3,$4;
 | 
	
		
			
				|  |  |  stream=""._writeStream();
 | 
	
		
			
				|  |  |  $1=self["@selectedClass"];
 | 
	
		
			
				|  |  | -if(($receiver = $1) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $1) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $1;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $2=stream;
 | 
	
	
		
			
				|  | @@ -2491,7 +2491,7 @@ var self=this;
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@selectedMethod"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $1=self._dummyMethodSource();
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $1=_st(self["@selectedMethod"])._source();
 | 
	
	
		
			
				|  | @@ -2520,7 +2520,7 @@ $2=[];
 | 
	
		
			
				|  |  |  return $2;
 | 
	
		
			
				|  |  |  };
 | 
	
		
			
				|  |  |  $3=self["@selectedClass"];
 | 
	
		
			
				|  |  | -if(($receiver = $3) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $3) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $3;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $4=_st(self["@selectedTab"]).__eq("instance");
 | 
	
	
		
			
				|  | @@ -2532,9 +2532,9 @@ klass=_st(self["@selectedClass"])._class();
 | 
	
		
			
				|  |  |  klass;
 | 
	
		
			
				|  |  |  };
 | 
	
		
			
				|  |  |  $7=self["@selectedProtocol"];
 | 
	
		
			
				|  |  | -if(($receiver = $7) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $7) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $8=klass;
 | 
	
		
			
				|  |  | -if(($receiver = $8) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $8) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $6=[];
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $6=_st(_st(klass)._methodDictionary())._values();
 | 
	
	
		
			
				|  | @@ -2598,7 +2598,7 @@ function $Array(){return smalltalk.Array||(typeof Array=="undefined"?nil:Array)}
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $1,$2,$3,$4,$5,$6,$7,$8;
 | 
	
		
			
				|  |  |  $1=self["@selectedClass"];
 | 
	
		
			
				|  |  | -if(($receiver = $1) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $1) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $1;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $2=_st(self["@selectedTab"]).__eq("comment");
 | 
	
	
		
			
				|  | @@ -2746,7 +2746,7 @@ return smalltalk.withContext(function($ctx1) {
 | 
	
		
			
				|  |  |  var $1,$2;
 | 
	
		
			
				|  |  |  newName=self._prompt_("Rename package ".__comma(self["@selectedPackage"]));
 | 
	
		
			
				|  |  |  $1=newName;
 | 
	
		
			
				|  |  | -if(($receiver = $1) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $1) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $1;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $2=_st(newName)._notEmpty();
 | 
	
	
		
			
				|  | @@ -3296,7 +3296,7 @@ $2=self._declarationSource();
 | 
	
		
			
				|  |  |  return $2;
 | 
	
		
			
				|  |  |  };
 | 
	
		
			
				|  |  |  $5=self["@selectedClass"];
 | 
	
		
			
				|  |  | -if(($receiver = $5) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $5) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $4="";
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $4=self._classCommentSource();
 | 
	
	
		
			
				|  | @@ -3607,7 +3607,7 @@ var $1,$2,$3;
 | 
	
		
			
				|  |  |  $1=_st(_st(self["@sourceArea"])._val()).__eq(self._source());
 | 
	
		
			
				|  |  |  if(smalltalk.assert($1)){
 | 
	
		
			
				|  |  |  $2=self["@saveButton"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $2;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  _st(self["@saveButton"])._at_put_("disabled",true);
 | 
	
	
		
			
				|  | @@ -3616,7 +3616,7 @@ self["@unsavedChanges"]=false;
 | 
	
		
			
				|  |  |  self["@unsavedChanges"];
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $3=self["@saveButton"];
 | 
	
		
			
				|  |  | -if(($receiver = $3) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $3) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $3;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  _st(self["@saveButton"])._removeAt_("disabled");
 | 
	
	
		
			
				|  | @@ -4074,7 +4074,7 @@ return smalltalk.withContext(function($ctx2) {
 | 
	
		
			
				|  |  |  return self._selectContext_(aContext);
 | 
	
		
			
				|  |  |  }, function($ctx2) {$ctx2.fillBlock({},$ctx1,2)})}));
 | 
	
		
			
				|  |  |  $4=_st(aContext)._outerContext();
 | 
	
		
			
				|  |  | -if(($receiver = $4) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $4) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $4;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  self._renderContext_on_(_st(aContext)._outerContext(),html);
 | 
	
	
		
			
				|  | @@ -4196,7 +4196,7 @@ var self=this;
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self._method();
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $1="Method doesn't exist!";
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $1=_st(self._method())._source();
 | 
	
	
		
			
				|  | @@ -4274,7 +4274,7 @@ var $1,$2,$3;
 | 
	
		
			
				|  |  |  $1=_st(_st(self["@sourceArea"])._val()).__eq(self._source());
 | 
	
		
			
				|  |  |  if(smalltalk.assert($1)){
 | 
	
		
			
				|  |  |  $2=self["@saveButton"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $2;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  _st(self["@saveButton"])._at_put_("disabled",true);
 | 
	
	
		
			
				|  | @@ -4283,7 +4283,7 @@ self["@unsavedChanges"]=false;
 | 
	
		
			
				|  |  |  self["@unsavedChanges"];
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $3=self["@saveButton"];
 | 
	
		
			
				|  |  | -if(($receiver = $3) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $3) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $3;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  _st(self["@saveButton"])._removeAt_("disabled");
 | 
	
	
		
			
				|  | @@ -4339,7 +4339,7 @@ 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 == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $7) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  _st(self["@inspectButton"])._at_put_("disabled",true);
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  _st(self["@inspectButton"])._removeAt_("disabled");
 | 
	
	
		
			
				|  | @@ -4475,7 +4475,7 @@ var self=this;
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $1;
 | 
	
		
			
				|  |  |  $1=self["@textarea"];
 | 
	
		
			
				|  |  | -if(($receiver = $1) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $1) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  self._open();
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $1;
 | 
	
	
		
			
				|  | @@ -4500,7 +4500,7 @@ var self=this;
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@current"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  self["@current"]=smalltalk.IDETranscript.klass.superclass.fn.prototype._new.apply(_st(self), []);
 | 
	
		
			
				|  |  |  $1=self["@current"];
 | 
	
		
			
				|  |  |  } else {
 | 
	
	
		
			
				|  | @@ -4629,7 +4629,7 @@ var self=this;
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@label"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $1="Inspector (nil)";
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $1=$2;
 | 
	
	
		
			
				|  | @@ -5067,7 +5067,7 @@ var self=this;
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@percent"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  $1=(0);
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  $1=$2;
 | 
	
	
		
			
				|  | @@ -5209,7 +5209,7 @@ function $Array(){return smalltalk.Array||(typeof Array=="undefined"?nil:Array)}
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@implementors"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  self["@implementors"]=_st($Array())._new();
 | 
	
		
			
				|  |  |  $1=self["@implementors"];
 | 
	
		
			
				|  |  |  } else {
 | 
	
	
		
			
				|  | @@ -5267,7 +5267,7 @@ function $Array(){return smalltalk.Array||(typeof Array=="undefined"?nil:Array)}
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@matches"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  self["@matches"]=_st($Array())._new();
 | 
	
		
			
				|  |  |  $1=self["@matches"];
 | 
	
		
			
				|  |  |  } else {
 | 
	
	
		
			
				|  | @@ -5325,7 +5325,7 @@ function $Array(){return smalltalk.Array||(typeof Array=="undefined"?nil:Array)}
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@referencedClasses"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  self["@referencedClasses"]=_st($Array())._new();
 | 
	
		
			
				|  |  |  $1=self["@referencedClasses"];
 | 
	
		
			
				|  |  |  } else {
 | 
	
	
		
			
				|  | @@ -5615,7 +5615,7 @@ function $Array(){return smalltalk.Array||(typeof Array=="undefined"?nil:Array)}
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@senders"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  self["@senders"]=_st($Array())._new();
 | 
	
		
			
				|  |  |  $1=self["@senders"];
 | 
	
		
			
				|  |  |  } else {
 | 
	
	
		
			
				|  | @@ -5650,7 +5650,7 @@ return self["@timer"];
 | 
	
		
			
				|  |  |  $2=_st($1)._onKeyDown_((function(){
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx2) {
 | 
	
		
			
				|  |  |  $3=self["@timer"];
 | 
	
		
			
				|  |  | -if(($receiver = $3) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $3) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  return $3;
 | 
	
		
			
				|  |  |  } else {
 | 
	
		
			
				|  |  |  return _st(self["@timer"])._clearTimeout();
 | 
	
	
		
			
				|  | @@ -6072,7 +6072,7 @@ function $ProgressBar(){return smalltalk.ProgressBar||(typeof ProgressBar=="unde
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@progressBar"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  self["@progressBar"]=_st($ProgressBar())._new();
 | 
	
		
			
				|  |  |  $1=self["@progressBar"];
 | 
	
		
			
				|  |  |  } else {
 | 
	
	
		
			
				|  | @@ -6348,7 +6348,7 @@ function $Array(){return smalltalk.Array||(typeof Array=="undefined"?nil:Array)}
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@selectedCategories"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  self["@selectedCategories"]=_st($Array())._new();
 | 
	
		
			
				|  |  |  $1=self["@selectedCategories"];
 | 
	
		
			
				|  |  |  } else {
 | 
	
	
		
			
				|  | @@ -6373,7 +6373,7 @@ function $Array(){return smalltalk.Array||(typeof Array=="undefined"?nil:Array)}
 | 
	
		
			
				|  |  |  return smalltalk.withContext(function($ctx1) { 
 | 
	
		
			
				|  |  |  var $2,$1;
 | 
	
		
			
				|  |  |  $2=self["@selectedClasses"];
 | 
	
		
			
				|  |  | -if(($receiver = $2) == nil || $receiver == undefined){
 | 
	
		
			
				|  |  | +if(($receiver = $2) == nil || $receiver == null){
 | 
	
		
			
				|  |  |  self["@selectedClasses"]=_st($Array())._new();
 | 
	
		
			
				|  |  |  $1=self["@selectedClasses"];
 | 
	
		
			
				|  |  |  } else {
 |