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Test Info:

// META: global=window,worker
test(() => {
assert_throws_js(TypeError, () => { new URLPattern(new URL('https://example.org/%(')); } );
assert_throws_js(TypeError, () => { new URLPattern(new URL('https://example.org/%((')); } );
assert_throws_js(TypeError, () => { new URLPattern('(\\'); } );
}, `Test unclosed token`);
test(() => {
new URLPattern(undefined, undefined);
}, `Test constructor with undefined`);