10:10
<rkirsling>
well this is odd. we got a JSC bug report suggesting that "use strict"; x = this.x = 0; should throw, but V8 and SM don't throw either. engine262 does, confirming the spec interpretation, but I wonder if it's web compatible to fix...
10:20
<rkirsling>
okay so the same reporter created V8 and SM bugs too, but the SM one was closed as duplicate of a 12(!)-year-old bug 👀
10:21
<rkirsling>
yet there's no documented reason for the non-fix: https://bugzilla.mozilla.org/show_bug.cgi?id=605515