# regexp/no-potentially-useless-backreference
disallow backreferences that reference a group that might not be matched
- ⚙️ This rule is included in
"plugin:regexp/recommended".
# 📖 Rule Details
If the referenced group of a backreference is not matched because some other path leads to the backreference, the backreference will trivially accept (e.g. /(?:(a)|b)\1/). The same will happen if the captured text of the referenced group was reset before reaching the backreference.
This will not handle backreferences that always trivially accept. Use regexp/no-useless-backreference for that.
# 🔧 Options
Nothing.
# 👫 Related rules
# ❤️ Compatibility
This rule was taken from eslint-plugin-clean-regex (opens new window).
This rule is compatible with clean-regex/no-potentially-empty-backreference (opens new window) rule.
# 🚀 Version
This rule was introduced in eslint-plugin-regexp v0.9.0