BigInt landed in ES2020 and has been supported in something like the last 10-20 versions of Chrome and Firefox, so no huge worries about using it (the "current" browser without support is IE11).

The `123|0` type hint is also recognized and implemented by most browsers too. It forces a 31-bit integer on most platforms (and can offer a significant performance boosts if you're running a tight algorithm).

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...