ES3 Object.prototype.propertyIsEnumerable missing

[jdalton]

tessel is missing support for ES3 Object.prototype.propertyIsEnumerable.

[rwaldron]

@jdalton well hello sir :)

Just to give you some (hopefully valuable) insight: the Object meta property system is incomplete (well known issue). Currently progress is blocked while @tcr refines the lua-jit work to make it possible to implement the semantics with reasonable performance. Here's an outline, but I'll ask you to keep in mind that the prime directive is to fix these things as soon as is reasonably feasible. Stay positive ;)

• Setting a property's configurable, writable or enumerable attribute is currently meaningless
• Object.getOwnPropertyDescriptor returns a hard coded object of attributes and values (as a placeholder)
• Object.freeze is effectively a no-op identity function
• Missing: Object.{isFrozen, seal, isSealed, preventExtensions, isExtensible }
• no strict mode

Help from you would be <3 :)

[jdalton]

Cool. No worries, just giving a heads up. @mattpodwysocki had mentioned Lo-Dash errored because of the missing API. I know at least ES5-shim & MooTools use it too.

[rwaldron]

Oh cool, that's an awesome find :)

[tberthe]

Hello.
Is any correction planned for this issue ?
hasOwnProperty(...) is used by many modules such as express (merge-descriptors, proxy-addr, qs) or body-parser (iconv-lite, qs)

[rwaldron]

@tberthe there is currently no mechanism to differentiate own vs. inherited properties. According to MOVING FASTER WITH IO.JS, attention is moving to Tessel 2, which will run io.js.