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// The WeakMap constructor creates an empty WeakMap by default.
load(libdir + "asserts.js");
new WeakMap();
new WeakMap(undefined);
new WeakMap(null);
assertThrowsInstanceOf(() => WeakMap(), TypeError);
assertThrowsInstanceOf(() => WeakMap(undefined), TypeError);
assertThrowsInstanceOf(() => WeakMap(null), TypeError);
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