RegExpUnicodeSets
SerializationFeature.RegExpUnicodeSets
Enable writing RegExp with the UnicodeSets flag.
This wasn’t a format change in the serializer itself, but versions of V8 without support for this flag will not be able to deserialize containing a RegExp using the flag.
The commit adding the v
flag was made on 2022-09-03
Note that it seems the flag wasn’t correctly validated by the serializer, so initially V8 could deserialize RegExps that incorrectly used u
and v
flags at the same time. v8serialize
consistently enforces the mutual-exclusion of u
and v
flags in JSRegExp
.