On 10/27/15 9:14 AM, Boris Zbarsky wrote:
On 10/27/15 4:35 AM, Claude Pache wrote:
it is that, for any callable object, it will return a string and not
throw, because it was so since the dawn of JS.
It's totally false for random "host objects" with a [[Call]] in ES5, per
spec and in at least some implementations. As you can tell in Firefox
for example:
Function.prototype.toString.call(document.createElement("object"))
(though it does not throw for document.all in Firefox, for interesting
implementation reasons).
Though note that I would be just fine with defining
Function.prototype.toString to return something akin to what it does for
"host functions" for any "host object" with a [[Call]]...
-Boris
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