regexDigitMatchers

Reports character classes with multiple adjacent characters that could use a range instead.

✅ This rule is included in the ts stylisticStrict presets.

Enforces using \d instead of [0-9] and \D instead of [^0-9] in regular expressions. The escape sequences are more concise and widely recognized.

Examples

Digit Character Class

❌ Incorrect

const pattern = /[0-9]+/;

✅ Correct

const pattern = /\d+/;

Negated Digit Character Class

❌ Incorrect

const pattern = /[^0-9]/;

✅ Correct

const pattern = /\D/;

All Digits Listed

❌ Incorrect

const pattern = /[0123456789]/;

✅ Correct

const pattern = /\d/;

RegExp Constructor

❌ Incorrect

const pattern = new RegExp("[0-9]+");

✅ Correct

const pattern = new RegExp("\\d+");

Options

This rule is not configurable.

When Not To Use It

If your codebase has an established convention of using [0-9] for readability, or if you need consistency with patterns that mix digit ranges with other characters (like [0-9a-f] for hexadecimal), you might prefer to disable this rule.

Further Reading

• MDN: Character class escape \d
• MDN: Character class

Equivalents in Other Linters

• ESLint: regexp/prefer-d