Object.define ==> Object.mixin??

Allen Wirfs-Brock allen at wirfs-brock.com
Wed Dec 12 10:18:14 PST 2012


On Dec 12, 2012, at 10:05 AM, Brandon Benvie wrote:

> All the Object functions that operate on multiple properties are currently specified using pendingException which reports the first thrown exception after going through all the properties. defineProperties, freeze, etc.

In, ES6.  This is a breaking (hopefully nothing) change from ES5 that was suggested by Mark Miller.

The desire is to decrease the non-determinism that an early throw introduces.  In the ES6 approach all property updates that can occur will occur, before the exception is thrown instead of leaving the object in a less well defined partially updated state.

Allen




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