Bug in regular expression matching assets

[uuf6429]

wordpress-importer/src/migration.js

Line 120 in 141c99d

const assets_regex = new RegExp(`(\\"((http)?s?:?(\\/?\\/[^"]*.(${this.settings.import_assets.types.join('|')})))(\\\\)?")`, "g")

If we look at that regular expression, it basically boils down to something like:

<snip> [^"]*.(jpg|png|pdf <snip> ) <snip>

That dot/period looks suspicious - why do we care that there is at least one character before the file extension?
I am guessing that the intention there was to match a literal dot (as in .png) and not "any character" (as in *png), in which case it should have been escaped like \. (but should be escaped twice in that string: \\.).

In general, that code looks like it works, but it also matches things like https://somesite.com/amazing-blog-about-png. This leads to errors later on, in my case something like so (I still don't fully understand the reason behind error, but the regex fix should fix it):