hexadecimal-escape.md

pageClass	sidebarDepth	title	description	since
rule-details	0	regexp/hexadecimal-escape	enforce consistent usage of hexadecimal escape	v0.9.0

regexp/hexadecimal-escape

🔧 This rule is automatically fixable by the --fix CLI option.

enforce consistent usage of hexadecimal escape

📖 Rule Details

Characters that can use hexadecimal escape can use both hexadecimal escape and unicode escape.

This rule aims to enforce the consistent use of hexadecimal escapes.

/* eslint regexp/hexadecimal-escape: "error" */

/* ✓ GOOD */
var foo = /\x0a/;

/* ✗ BAD */
var foo = /\u000a/;
var foo = /\u{a}/u;

🔧 Options

{
  "regexp/hexadecimal-escape": [
    "error",
    "always", // or "never"
  ]
}

• "always" ... Unicode escape characters that can use hexadecimal escape must always use hexadecimal escape. This is default.
• "never" ... Disallows the use of hexadecimal escapes on all characters.

"never"

/* eslint regexp/hexadecimal-escape: ["error", "never"] */

/* ✓ GOOD */
var foo = /\u000a/;
var foo = /\u{a}/u;

/* ✗ BAD */
var foo = /\x0a/;

👫 Related rules

• regexp/unicode-escape

🚀 Version

This rule was introduced in eslint-plugin-regexp v0.9.0

🔍 Implementation

• Rule source
• Test source