Jest snapshots seem to ignore \r

[brodycj]

While finishing some work I discovered that when using Jest snapshots, it misses the difference between using \r\n and \n. This could be an issue when using something like simple-xml-writer, which seems to use \r\n for line breaks. I discovered this on Jest 25.

Related is that Stryker Mutator should be able to pick this kind of thing up, but as of Stryker Mutator 3.0.2 it does not seem to mutate regex such as /\r\n\/g which could be used in a JavaScript string replace function call.

I hope to find a way to get these resolved someday soon.