Brendan Eich wrote: > On Jan 11, 2010, at 10:53 AM, David-Sarah Hopwood wrote: > >>> Who said primordial objects are shared between modules? >> >> Having separate copies of primordial objects for each module is not >> sufficient to ensure isolation. If one module has access to some object >> obj of another, it can also get access to that object's prototype chain >> using Object.getPrototypeOf(obj), or obj.constructor.prototype. > > I meant what I wrote: [w]ho said primordial objects are shared between > modules? Shared by passing objects, or by fiat in the implementation, > does not matter.
If objects cannot be passed directly between modules without breaking encapsulation, then it's not a particularly useful module system. Passing only JSON objects, say, is not sufficient: it's necessary to be able to pass function objects, at least. > Isolation does not require frozen primordials, no > matter how often you assume it does to conclude that it does. What part of "I was incorrect in saying that mutable primordials *necessarily* preclude isolation." did you not understand? -- David-Sarah Hopwood ⚥ http://davidsarah.livejournal.com
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