Potential fix for jsClassValue region

This fix may actually work out for us when using jsClassValue. There
still are some cases where it could be tripped up, for example on multi
line equations and stuff, but for the most part I think it should do the
trick.

Author: amadeus

syntax/javascript.vim

@@ -163,7 +163,7 @@ syntax match   jsClassDefinition        /\<class\>\%( [a-zA-Z_$][0-9a-zA-Z_$ \n.
 syntax match   jsDecorator              contained "@" nextgroup=jsDecoratorFunction
 syntax match   jsDecoratorFunction      contained "[a-zA-Z_][a-zA-Z0-9_.]*"
 syntax match   jsClassProperty          contained /\<[0-9a-zA-Z_$]*\>\(\s*=\)\@=/ skipwhite skipempty nextgroup=jsClassValue
-syntax region  jsClassValue             contained start=/=/ end=/\%(;\|}\)\@=/ contains=@jsExpression
+syntax region  jsClassValue             contained start=/=/ end=/\%(;\|}\|\n\)\@=/ contains=@jsExpression
 syntax region  jsClassPropertyComputed  contained matchgroup=jsBrackets start=/\[/ end=/]/ contains=@jsExpression skipwhite skipempty nextgroup=jsFuncArgs extend
 syntax match   jsClassFuncName          contained /\<[a-zA-Z_$][0-9a-zA-Z_$]*\>\%(\s*(\)\@=/ skipwhite skipempty nextgroup=jsFuncArgs
 
@@ -296,7 +296,7 @@ if version >= 508 || !exists("did_javascript_syn_inits")
   HiLink jsFuncArgRestDots      Noise
   HiLink jsFuncArgDestructuring Noise
   HiLink jsModuleAsterisk       Noise
-  HiLink jsClassProperty        Identifier
+  HiLink jsClassProperty        jsObjectKey
   HiLink jsSpreadOperator       Operator
 
   HiLink jsDomErrNo             Constant