test/script/basic/JDK-8019508.js#33<eval>:1:2 Expected property id but found ,
({,})
  ^
test/script/basic/JDK-8019508.js#33<eval>:1:2 Expected property id but found ,
({, a:2 })
  ^
test/script/basic/JDK-8019508.js#33<eval>:1:6 Expected property id but found ,
({a:3,,})
      ^
test/script/basic/JDK-8019508.js#33<eval>:1:6 Expected comma but found ident
({a:3 b:2}
      ^