Misc tweaks

* Fixes to jsSpreadOperator
* Added fold to jsObject
* Organized fold/extend arguments better

Author: amadeus

syntax/javascript.vim

@@ -32,7 +32,7 @@ syntax match   jsParensError    /\%()\|}\|\]\)/
 syntax keyword jsStorageClass   const var let
 syntax keyword jsOperator       delete instanceof typeof void new in of
 syntax match   jsOperator       /[\!\|\&\+\-\<\>\=\%\/\*\~\^]\{1}/
-syntax match   jsSpreadOperator /\.\.\./
+syntax match   jsSpreadOperator /\.\.\./ skipwhite skipempty nextgroup=@jsExpression
 syntax keyword jsBooleanTrue    true
 syntax keyword jsBooleanFalse   false
 
@@ -126,17 +126,17 @@ syntax keyword jsDomNodeConsts  ELEMENT_NODE ATTRIBUTE_NODE TEXT_NODE CDATA_SECT
 syntax keyword jsHtmlEvents     onblur onclick oncontextmenu ondblclick onfocus onkeydown onkeypress onkeyup onmousedown onmousemove onmouseout onmouseover onmouseup onresize
 
 "" Code blocks
-syntax region  jsBracket               matchgroup=jsBrackets          start="\[" end="\]" contains=@jsExpression fold extend
-syntax region  jsParen                 matchgroup=jsParens            start=/(/  end=/)/  contains=@jsAll fold extend
-syntax region  jsParenIfElse contained matchgroup=jsParens            start=/(/  end=/)/  contains=@jsAll skipwhite skipempty nextgroup=jsBlock fold extend
-syntax region  jsParenRepeat contained matchgroup=jsParens            start=/(/  end=/)/  contains=@jsAll skipwhite skipempty nextgroup=jsBlock fold extend
-syntax region  jsParenSwitch contained matchgroup=jsParens            start=/(/  end=/)/  contains=@jsAll skipwhite skipempty nextgroup=jsSwitchBlock fold extend
-syntax region  jsParenCatch  contained matchgroup=jsParens            start=/(/  end=/)/  skipwhite skipempty nextgroup=jsBlock fold extend
-syntax region  jsClassBlock  contained matchgroup=jsClassBraces       start=/{/  end=/}/  contains=jsClassFuncName,jsClassMethodDefinitions,jsOperator,jsArrowFunction,jsArrowFuncArgs,jsComment,jsGenerator,jsDecorator,jsClassProperty,jsClassPropertyComputed,jsNoise fold
-syntax region  jsFuncBlock   contained matchgroup=jsFuncBraces        start=/{/  end=/}/  contains=@jsAll fold extend
+syntax region  jsBracket               matchgroup=jsBrackets          start="\[" end="\]" contains=@jsExpression extend fold
+syntax region  jsParen                 matchgroup=jsParens            start=/(/  end=/)/  contains=@jsAll extend fold
+syntax region  jsParenIfElse contained matchgroup=jsParens            start=/(/  end=/)/  contains=@jsAll skipwhite skipempty nextgroup=jsBlock extend fold
+syntax region  jsParenRepeat contained matchgroup=jsParens            start=/(/  end=/)/  contains=@jsAll skipwhite skipempty nextgroup=jsBlock extend fold
+syntax region  jsParenSwitch contained matchgroup=jsParens            start=/(/  end=/)/  contains=@jsAll skipwhite skipempty nextgroup=jsSwitchBlock extend fold
+syntax region  jsParenCatch  contained matchgroup=jsParens            start=/(/  end=/)/  skipwhite skipempty nextgroup=jsBlock extend fold
+syntax region  jsClassBlock  contained matchgroup=jsClassBraces       start=/{/  end=/}/  contains=jsClassFuncName,jsClassMethodDefinitions,jsOperator,jsArrowFunction,jsArrowFuncArgs,jsComment,jsGenerator,jsDecorator,jsClassProperty,jsClassPropertyComputed,jsNoise extend fold
+syntax region  jsFuncBlock   contained matchgroup=jsFuncBraces        start=/{/  end=/}/  contains=@jsAll extend fold
 syntax region  jsBlock       contained matchgroup=jsBraces            start=/{/  end=/}/  contains=@jsAll extend fold
 syntax region  jsSwitchBlock contained matchgroup=jsBraces            start=/{/  end=/}/  contains=@jsAll,jsLabel extend fold
-syntax region  jsObject                matchgroup=jsObjectBraces      start=/{/  end=/}/  contains=jsObjectKey,jsObjectKeyString,jsObjectKeyComputed,jsObjectSeparator,jsObjectFuncName,jsObjectGetSet,jsGenerator,jsComment,jsSpreadOperator extend
+syntax region  jsObject                matchgroup=jsObjectBraces      start=/{/  end=/}/  contains=jsObjectKey,jsObjectKeyString,jsObjectKeyComputed,jsObjectSeparator,jsObjectFuncName,jsObjectGetSet,jsGenerator,jsComment,jsSpreadOperator extend fold
 syntax region  jsTernaryIf             matchgroup=jsTernaryIfOperator start=/?/  end=/:/  contains=@jsExpression
 
 syntax match   jsGenerator            contained /\*/ skipwhite skipempty nextgroup=jsFuncName,jsFuncArgs