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'use strict';
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module.exports = string => {
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if (typeof string !== 'string') {
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throw new TypeError('Expected a string');
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}
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// Escape characters with special meaning either inside or outside character sets.
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// 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.
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return string
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.replace(/[|\\{}()[\]^$+*?.]/g, '\\$&')
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.replace(/-/g, '\\x2d');
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};
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