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QUnit.test('Reflect.metadata', assert => {
const { metadata, hasOwnMetadata } = Reflect;
assert.isFunction(metadata);
assert.arity(metadata, 2);
assert.name(metadata, 'metadata');
assert.looksNative(metadata);
assert.isFunction(metadata('key', 'value'));
assert.nonEnumerable(Reflect, 'metadata');
const decorator = metadata('key', 'value');
assert.throws(() => decorator(undefined, 'name'), TypeError);
let target = function () { /* empty */ };
decorator(target);
assert.true(hasOwnMetadata('key', target, undefined));
target = {};
decorator(target, 'name');
assert.true(hasOwnMetadata('key', target, 'name'));
});
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