Valid pattern with unescaped dot fails to rewrite

[juliangoacher]

The rewritePattern function generates an error when passed a regex pattern containing an unescaped dot within an alternatives group.

For example, the following pattern:

    /(x.x|x)/

Fails to rewrite in the following code:

const regex = /(x.x|x)/
const pattern = regex.toString()
rewritePattern(pattern)

And instead generates the following error:

Error: Invalid node type: dot; expected types: /^(?:anchor|characterClass|characterClassEscape|empty|group|quantifier|reference|unicodePropertyEscape|value)$/

The error goes away if the dot is escaped:

    /(x\.x|x)/

But of course this changes the meaning of the regex.

The problem is seen in the current regexpu version (4.6.0) but doesn't seem to exist in the previous version (tested 4.5.4).

[nicolo-ribaudo]

Fixed by bnjmnt4n/regjsgen#13