Regex not compatible on lower versions of IOS / Safari

[laomu1988]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and discussions and couldn’t find anything (or linked relevant results below)

Affected package

remark-gfm4.0.0

Steps to reproduce

[/(?<=^|\s|\p{P}|\p{S})([-.\w+]+)@([-\w]+(?:.[-\w]+)+)/gu, findEmail]

Create JS crash on Safari / IOS(15.3)

Actual behavior

got error "Invalid regular expression: invalid group specifier name"

Expected behavior

not got error

Runtime

No response

Package manager

No response

Operating system

No response

Build and bundle tools

No response

[ChristianMurphy]

Duplicate of #10

[github-actions]

Hi! This was closed. Team: If this was fixed, please add phase/solved. Otherwise, please add one of the no/* labels.