prefer-regexp-test.md

prefer-regexp-test

📝 Prefer RegExp#test() over String#match() and RegExp#exec().

💼 This rule is enabled in the following configs: ✅ recommended, ☑️ unopinionated.

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

When you want to know whether a pattern is found in a string, use RegExp#test() instead of String#match() and RegExp#exec(), as it exclusively returns a boolean and therefore is more efficient.

Examples

// ❌
if (string.match(/unicorn/)) {}

// ❌
if (/unicorn/.exec(string)) {}

// ✅
if (/unicorn/.test(string)) {}

<template>
	<!-- ❌ -->
	<div v-if="/unicorn/.exec(string)">Vue</div>

	<!-- ✅ -->
	<div v-if="/unicorn/.test(string)">Vue</div>
</template>