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27 lines
363 B

/*===
[object JSON]
true
TypeError
TypeError
===*/
/* [[Class]] is "JSON" */
print(Object.prototype.toString.call(JSON));
/* extensible */
print(Object.isExtensible(JSON));
try {
// not constructable -> TypeError
new JSON();
} catch (e) {
print(e.name);
}
try {
// not callable -> TypeError
new JSON();
} catch (e) {
print(e.name);
}