Relationship between globals, Realms, and global environment records

Domenic Denicola d at
Mon Nov 24 17:08:12 PST 2014

From: es-discuss [mailto:es-discuss-bounces at] On Behalf Of Allen Wirfs-Brock

> There is definite a 1:1:1 relationship between a global object, realmRec, global environment record.  And  ES views those relationships are immutable.  You can't just change the global object of a realmRec or give it a different global environment record after it has been initialized.

Which brings up the questions:

1. Would it be possible to define realms (and possibly the other things) purely by attaching internal slots to the global objects?
2. How elegant/awkward would that be? Both conceptually and in concrete terms of structuring the spec.

Ian has previously expressed concerns that things on the web platform that start out 1:1 often become no-longer 1:1, like windows and documents (which are strangely enough many-to-many). Enforcing this 1:1 relationship would be a good idea, whether we do it by consolidating concepts or otherwise.

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