Re: Rw-asking: a weaklist that doesn't work and an object with elements that can't be copied or queried

Dave,

I forgot to mention that  I also tried to go the JSON.stringify() road using 
a "replacer" function (pretty-much copy-pasting it).  It it also used a 
WeakList, and again barfed throwing the same error. IOW, its not something 
related to my coding if you might think that. :-)

With the absense of someone recognising the problem I just did a few more 
tests.

I ran, inside the addon, the "examples" code I found here :
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet
, which worked. Jay!

However, when I try to add, in that same code, the object as provided as the 
"http-on-examine-response" callbacks first argument I get a "TypeError: 
cannot use the given object as a weak map key".

It simply looks like that the object delivered by FF isn't quite compatible 
with JS.  Which is a bit of a WTF? to me ...   It could also be the reason 
why the "var value = arr[item]" assignment sometimes fails (on specific 
"item" fields).


The new question now is : is there a way with which I can convince a 
WeakList to accept the FF object ? Without trying to alter the FF object 
itself ofcourse.

Regards,
Rudy Wieser