regexp/confusing-quantifier
⚠️ This rule warns in the following configs: 🟢 flat/recommended, 🔵 recommended.
disallow confusing quantifiers
📖 Rule Details
Confusing quantifiers are ones which imply one thing but don't deliver on that.
An example of this is (?:a?b*|c+){4}. The group is quantified with {4} which implies that at least 4 characters will be matched, but this is not the case. The whole pattern will match the empty string. It does that because in the a?b* alternative, it's possible to choose 0 many a and b. So rather than {4}, {0,4} should be used to reflect the fact that the empty string can be matched.
🔧 Options
Nothing.
❤️ Compatibility
This rule was taken from eslint-plugin-clean-regex.
This rule is compatible with clean-regex/confusing-quantifier rule.
🚀 Version
This rule was introduced in eslint-plugin-regexp v0.8.0