I don't think it does

JSON, like all nameless data structures, cannot be self-referential

Ex

 my $a ;
$a = [ \$a ] ; # self referential, but
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If it wasn't for name $a, then $a couldn't refer to itself

[ # used to be $a
  [] # WHOOPS, not $a
]
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JSON is JavaScript without named variables

I suppose there might be js libraries that try to overcome this limitation by doing the mapping for you, but i've not seen one