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.
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JSTests
/
es6
/
miscellaneous_subclassables_Set_is_subclassable.js
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function
test
()
{
var
obj
=
{};
class
S extends
Set
{}
var
set
=
new
S
();
set
.
add
(
123
);
set
.
add
(
123
);
return
set
.
has
(
123
);
}
if
(!
test
())
throw
new
Error
(
"Test failed"
);