GM broken with Firefox 3.7a1pre nightly

[matthew-cline]

GM gives this error with the latest 3.7a1pre nightly:

Error: Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE)
[nsIXPCComponents_Utils.evalInSandbox]
Source file: file:///C:(removed path details to user profile)/(user profilefolder)/gm_scripts/(javascript folder)/(javascript).js
Line: 4294967295

See this Bugzilla bug: https://bugzilla.mozilla.org/show_bug.cgi?id=525560

[arantius]

In the latest comment (as of now), at mozilla, it's suggested that we hard code firefox version (easy, reliable to detect) to js version (stable per FFX version), and use that.

It requires maintaining this list at each FFX release, but it will not break.

[matthew-cline]

Yeah, I've hacked maxJSVersion to always return 1.80, and it works just fine for me.

[arantius]

Looking things up by hand to be sure, I find:

Firefox 2.0 has JS 1.6
Firefox 3.0 has JS 1.6
Firefox 3.5 has JS 1.8
Firefox 3.6 has JS 1.8

So this logic should be quite straightforward.