| pageClass | sidebarDepth | title | description | since |
|---|---|---|---|---|
rule-details |
0 |
regexp/no-empty-character-class |
disallow character classes that match no characters |
v1.2.0 |
💼 This rule is enabled in the ✅ plugin:regexp/recommended config.
disallow character classes that match no characters
This rule reports character classes that cannot match any characters.
Character classes that cannot match any characters are either empty or negated character classes of elements that contain all characters.
The reports for this rule include reports for the ESLint core no-empty-character-class rule. That is, if you use this rule, you can turn off the ESLint core no-empty-character-class rule.
/* eslint regexp/no-empty-character-class: "error" */
/* ✓ GOOD */
var foo = /abc[d]/;
var foo = /abc[a-z]/;
var foo = /[^]/;
var foo = /[\s\S]/;
/* ✗ BAD */
var foo = /abc[]/;
var foo = /[^\s\S]/;Nothing.
This rule was introduced in eslint-plugin-regexp v1.2.0