u/LeBigMartinH

I'm trying to follow this tutorial to get into programming my own extensions for firefox, but it keeps throwing the error of manifest.name not having a length property, and being undefined when I try to select the files in the firefox temorary addon page.

I did some research, and I think I should just have to declare it somewhere (even though it should already be declared in the manifest.json file), but I can't figure it out.

Is this just an example of the language outgrowing an old tutorial?

Here's the github link for a clean version of the code.