Firefox 72.0 error: "OffscreenCanvas is not defined"

[marquizzo]

Hello! I've been using Spector.js in Firefox for over a year with great results. However, today I noticed that the "Debug with Spector" button was grayed out with no ability to enable it, and I encountered an error in my dev console that says:

ReferenceError: OffscreenCanvas is not defined.

I looked into this issue, and it looks like OffscreenCanvas only has limited support in Firefox and to enable it in the latest versions (72.0, but possibly earlier), we have to go into the Firefox preferences by visiting about:config and set gfx.offscreencanvas.enabled to true. Once this is toggled, the extension works as expected.

I just thought I'd let you know about this obstacle. Is there a more user-friendly way to enable this setting through the extension?

OS: Mac OS 10.13.6
Browser: Firefox 72.0

[sebavan]

Found it, thanks for reporting, it is a side-effect (meaning my big fingers messing up ;-) ) of the OffscreenCanvas support addition, I ll rollout a Fix ASAP.

[sebavan]

@marquizzo You can update your extension and it should be all good, I just deployed it

[marquizzo]

That was super fast. Thank you!