escape-string-regexp

Escape RegExp special characters

Tip

This is now available natively as RegExp.escape().

Install

npm install escape-string-regexp

Usage

import escapeStringRegexp from 'escape-string-regexp';

const escapedString = escapeStringRegexp('How much $ for a 🦄?');
//=> 'How much \\$ for a 🦄\\?'

new RegExp(escapedString);

You can also use this to escape a string that is inserted into the middle of a regex, for example, into a character class.

Only the minimal amount of escaping is done, and developers are expected to insert escaped strings at safe positions in a RegExp. This keeps the output simple and gives you the best results in most cases. For edge case placements of escaped strings (such as immediately following \0 or \c), the escaped value can change the meaning of the preceding or following token. If fully context-aware escaping is needed, consider interpolating a string using the regex package.