Wront behavior when replacing with unknown named groups #17174
Description
💻
- Would you like to work on a fix?
How are you using Babel?
Other (Next.js, Gatsby, vue-cli, ...)
Input code
"abcd".replace(/(?<foo>b)/, "[$<bar>]") Configuration file name
No response
Configuration
Using @babel/plugin-transform-named-capturing-groups-regex
Current and expected behavior
When running the input code, it produces "a[]cd". When transpiling it with Babel, it produces "a[$undefined]cd".
Environment
v7.26
Possible solution
No response
Additional context
No response