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.
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JSTests
/
es6
/
WeakSet_basic_functionality.js
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function
test
()
{
var
obj1
=
{};
var
weakset
=
new
WeakSet
();
weakset
.
add
(
obj1
);
weakset
.
add
(
obj1
);
return
weakset
.
has
(
obj1
);
}
if
(!
test
())
throw
new
Error
(
"Test failed"
);