no-zero-quantifier.md

pageClass	sidebarDepth	title	description	since
rule-details	0	regexp/no-zero-quantifier	disallow quantifiers with a maximum of zero	v0.10.0

regexp/no-zero-quantifier

💼 This rule is enabled in the ✅ plugin:regexp/recommended config.

💡 This rule is manually fixable by editor suggestions.

disallow quantifiers with a maximum of zero

📖 Rule Details

This rule reports quantifiers with a maximum of zero. These quantifiers trivially do not affect the pattern is any way and can be removed.

/* eslint regexp/no-zero-quantifier: "error" */

/* ✓ GOOD */
var foo = /a?/;
var foo = /a{0,}/;
var foo = /a{0,1}/;

/* ✗ BAD */
var foo = /a{0}/;
var foo = /a{0,0}?/;
var foo = /(a){0}/;

🔧 Options

Nothing.

🚀 Version

This rule was introduced in eslint-plugin-regexp v0.10.0

🔍 Implementation

• Rule source
• Test source