Placeholder for update coming on Frozen Realms:
In light of Meltdown and Spectre an update on Frozen Realms by Mark S. Miller is planned agenda for the 63rd meeting of Ecma TC39. March 20-22, 2018 at UCL (London). ecma
To clarify JS strict mode is one of several elements added in ES5 (along with Object.freeze, Object.getOwnPropertyNames, ...) that make SES possible as a library. JS strict mode by itself does not turn JS into an ocap system. You still need a library such as SES or the upcoming Frozen Realm shim. -- Cheers, --MarkM
Folks following Frozen Realms. Should review this thoughtful commentary with back and forth Q&A to clarify the spec .