In JavaScript, we can use the / (backslash) character to escape special characters inside a string, a template literal, or a regular
expression.
It indicates that the next character should be treated as a literal character rather than as a special character or string delimiter.
For instance, it is common to escape single quotes inside a string literal using the single quote delimiter like 'It\'s a beautiful
day'.
Escaping is only meaningful for special characters.
Why is this an issue?
Escaping non-special characters in strings, template literals, and regular expressions doesn’t affect their value. Therefore, useless escapes
impact code readability and could even denote a bug in the code if the developer left it by mistake or intended to escape another special character
instead.
How to fix it
We can safely remove a useless character escape without changing the original behaviour.
Code examples
Noncompliant code example
const regex = /[\[]/;
const octal = '\8';
const hello = 'Hello, world\!';
const path = `\/${some}\/${dir}`;
Compliant solution
const regex = /[[]/;
const octal = '8';
const hello = 'Hello, world!';
const path = `/${some}/${dir}`;
