regexp/strict

💼 This rule is enabled in the following configs: 🟢 flat/recommended, 🔵 recommended.

🔧💡 This rule is automatically fixable by the --fix CLI option and manually fixable by editor suggestions.

disallow not strictly valid regular expressions

📖 Rule Details

This rule disallows not strictly valid regular expressions.

An invalid pattern in a regular expression literal is a SyntaxError when the code is parsed. However, it is not always strictly checked.

Depending on the syntax defined in Annex B of the ECMAScript specification, some ambiguous pattern syntax may also succeed in parsing as a valid pattern. This rule reports these ambiguous patterns.

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🔧 Options

Nothing.

📚 Further reading

• ECMAScript® 2022 Language Specification > Annex B > B.1.4 Regular Expressions Patterns

👫 Related rules

• no-invalid-regexp
• regexp/no-standalone-backslash

🚀 Version

This rule was introduced in eslint-plugin-regexp v0.12.0

🔍 Implementation

• Rule source
• Test source