1048054 - Figure out a sane way to present Symbols in devtools

Status: RESOLVED DUPLICATE of bug 1024054

(Core :: JavaScript Engine, defect)

Description

[Boris Zbarsky [:bzbarsky]]

Right now, devtools have no sane way to present Symbols.  Trying to examine them directly throws "TypeError: can't convert symbol to string"; trying to console.log them fails miserably, etc.

I've been thinking a bit about what one would want to see when examining a Symbol, and it seems to me that there are two cases:

1)  This is a well-known Symbol.  In that case, saying @@iterator or Symbol.iterator or "the well-known @@iterator symbol" or something else is reasonable.

2)  This is a page-constructed Symbol.  In that case we want something like "Symbol constructed at file:line" or some such...  Do we expect |new Symbol| to be rare enough that it's OK for it to capture a stack?