ReferenceErrors in browserless environment

[hanna-greaves]

An issue occurs when L10N is being used in a browserless environment, such as being run directly using Node.

The issues largely come from the assumption that certain objects will exist, such as self, XMLHttpRequest and document, with the former two causing ReferenceErrors when they are reached in the code. This is particularly a problem when it comes to running Unit Tests on localization code inside environments like Mocha.

The errors in question are as follows:

ReferenceError: self is not defined at l10n.js:20:9

and

ReferenceError: XMLHttpRequest is not defined at l10n.js:196:11

I have a proposed set of changes to fix this issue for Node that I can create a PR for, if it is considered something that is in scope for the library to handle.

[eligrey]

Sure, I'm open to PRs.

[hanna-greaves]

Excellent, thanks Eli. I will make the PR and reference it here.