Safari: dijit.Editor dies while creating an unlabelled Button

Hi all! I’m working towards getting dijit.Editor usable in Safari.

In dijit.form.Button:postCreate, the following call to dojo.trim fails:

dojo.trim(this.containerNode.innerText || this.containerNode.textContent);

The reason for this is that in Safari this.containerNode.innerText returns an empty string. Safari then proceeds with this.containerNode.textContent and passes the result of this second call (undefined) to dojo.trim, where no typechecking is done and the call to undefined.replace fails. Unfortunately this transcends my javascript-foo. What’s the canonical way to work around that kind of problem? (it seems that Safari treats an empty String as a false-value – is this a bug in Safari?) However, if I explicitly cast the argument, I get a step further:

dojo.trim(String(” || undefined))

Possible patch is attached.

Thanks in advance for your feedback, Hannes