prefer-escape-replacement-dollar-char.md

pageClass	sidebarDepth	title	description	since
rule-details	0	regexp/prefer-escape-replacement-dollar-char	enforces escape of replacement `$` character (`$$`).	v0.6.0

regexp/prefer-escape-replacement-dollar-char

enforces escape of replacement $ character ($$).

📖 Rule Details

This rule aims to enforce correct dollar sign escapes ($$) when using $ in replacement pattern of string replacements.

/* eslint regexp/prefer-escape-replacement-dollar-char: "error" */

/* ✓ GOOD */
'€1,234'.replace(/€/, '$$'); // "$1,234"


/* ✗ BAD */
'€1,234'.replace(/€/, '$'); // "$1,234"

🔧 Options

Nothing.

👫 Related rules

• regexp/no-useless-dollar-replacements

📚 Further reading

• MDN Web Docs - String.prototype.replace() > Specifying a string as a parameter

🚀 Version

This rule was introduced in eslint-plugin-regexp v0.6.0

🔍 Implementation

• Rule source
• Test source