$ cat a.js
AbortSignal.timeout(2 ** 53 - 1).onabort = () => console.timeEnd();
console.time();
$ deno run a.js
default: 1.38ms
$ deno --version
deno 2.7.7+8f200f1 (canary, release, aarch64-apple-darwin)
v8 14.6.202.9-rusty
typescript 5.9.2
2⁵³ - 1 ms is >285426 years, which means the signal should practically never abort, but instead it aborts instantly. This seems to be a regression since f45e443.