Bug: no-invalid-regexp not reporting repeted flag allowed by allowConstructorFlags

[Tanujkanti4441]

Environment

Node version: latest
npm version: latest
Local ESLint version: latest
Global ESLint version: no
Operating System: windows

What parser are you using?

Default (Espree)

What did you do?

/*eslint no-invalid-regexp: ["error", { "allowConstructorFlags": ["a"] }]*/

new RegExp('.', 'aa');

What did you expect to happen?

report aa as invalid flag.

What actually happened?

rule doesn't report this as invalid supplied flag as it does with other predefined flags.

Link to Minimal Reproducible Example

https://eslint.org/play/#eyJ0ZXh0IjoiLyplc2xpbnQgbm8taW52YWxpZC1yZWdleHA6IFtcImVycm9yXCIsIHsgXCJhbGxvd0NvbnN0cnVjdG9yRmxhZ3NcIjogW1wiYVwiXSB9XSovXG5cbm5ldyBSZWdFeHAoJy4nLCAnYWEnKTsiLCJvcHRpb25zIjp7InJ1bGVzIjp7fSwibGFuZ3VhZ2VPcHRpb25zIjp7InNvdXJjZVR5cGUiOiJtb2R1bGUiLCJwYXJzZXJPcHRpb25zIjp7ImVjbWFGZWF0dXJlcyI6e319fX19

Participation

• I am willing to submit a pull request for this issue.

Additional comments

No response

[aladdin-add]

👍 confirmed, marking as accepted.