22   const ac = new AbortController();  constant
23   ok(ac.signal);
24   ac.signal.onabort = common.mustCall((event) => {
28   ac.signal.addEventListener('abort', common.mustCall((event) => {
32   ac.abort();
33   ac.abort();
34   ok(ac.signal.aborted);
39   const ac = new AbortController();  constant
40   ac.signal.addEventListener('abort', common.mustCall((event) => {
43   ac.abort();
69   const ac = new AbortController();  constant
70   throws(() => new ac.signal.constructor(), {
77   const ac = new AbortController();  constant
78   strictEqual(toString(ac), '[object AbortController]');
79   strictEqual(toString(ac.signal), '[object AbortSignal]');
148   const ac = new AbortController();  constant
149   strictEqual(inspect(ac, { depth: 1 }),
151   strictEqual(inspect(ac, { depth: null }),
157   const ac = new AbortController();  constant
158   ac.abort('reason');
159   strictEqual(ac.signal.reason, 'reason');
240   const ac = new AbortController();  constant
241   ac.abort();
242   ok(ac.signal.reason instanceof DOMException);
243   strictEqual(ac.signal.reason.code, 20);
254   const ac = new AbortController();  constant
255   ac.signal.throwIfAborted();