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- 'use strict';
-
- module.exports = string => {
- if (typeof string !== 'string') {
- throw new TypeError('Expected a string');
- }
-
- // Escape characters with special meaning either inside or outside character sets.
- // Use a simple backslash escape when it’s always valid, and a \unnnn escape when the simpler form would be disallowed by Unicode patterns’ stricter grammar.
- return string
- .replace(/[|\\{}()[\]^$+*?.]/g, '\\$&')
- .replace(/-/g, '\\x2d');
- };
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