Mike Samuel

@ljharb, In this scenario, realm S is using its own `Array.isTemplateObject`. > I don’t think it’s a reasonable request to repeat the deviation that is isArray anywhere else AFAICT, noone...

> There shouldn’t be a need to wrap o in a proxy, it’s a deeply frozen object. Deeply frozen objects may have unfrozen prototypes. ```js const o = {}; console.log(o.x);...

@erights Thanks for organizing that discussion. I hope you're feeling better. I know you still have some outstanding concerns, and you're short on time. Are there any questions I might...

@ljharb If Array.isTemplateObject is per-realm, and it lived at `Array.isTemplateObject` then a cross-realm-predicate could be done approximately (breakable via intrinsic tinkering) by reaching through the prototype to get the appropriate...

@ljharb. True. Hence the "breakable via instrinsic tinkering".

> the only thing i can trust is caching a function in my own realm prior to untrusted code running. Quite right, a parent realm could maintain a Map from...

Edited language s/brand check/predicate/. A *predicate* is sufficient for the non-security use cases. The per-realm brand check is sufficient for known security use cases.

Time is Thursday, December 19 * 3:00 – 4:00pm US ET * 12:00 - 1:00pm US PT via [hangouts](https://hangouts.google.com/hangouts/_/calendar/bWlrZXNhbXVlbEBnbWFpbC5jb20.65570tm1o90c4ciajgvrpib8mp?authuser=0) If anyone else wants to join, respond here. Will try to...

Sorry for my crap network connection. Thanks for bearing with me. I'm sure I missed a lot, but to capture some points discussed: * ISE/TT doesn't need or want to...

@ljharb Thanks for explaining. Attending remotely, I have a hard time telling whether I'm only getting questions from the usual suspects because everyone else feels similarly or has checked out....