Description

Encountered an error while escaping a string containing a - and passing it to Regexp.new() with u flag enabled

Related Issues

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Questions

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Demo

https://codesandbox.io/s/node-playground-forked-edd4wv?file=/src/index.js

Reproduction

import rescape from "@stdlib/utils-escape-regexp-string";
console.log(new RegExp(rescape("en-US"))); //=> /en\-US/
console.log(new RegExp(rescape("en-US"), "u")); //=> SyntaxError: invalid identity escape in regular expression

Expected Results

console.log(new RegExp(rescape("en-US"), "u")) should print /en-US/

Actual Results

console.log(new RegExp(rescape("en-US"), "u")) raises an error with a message similar to the following:

SyntaxError: Invalid regular expression: /en\-US/: Invalid escape

Version

@stdlib/utils-escape-regexp-string 0.0.9

Environments

Node.js, Firefox, Chrome

Browser Version

No response

Node.js / npm Version

16

Platform

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Checklist

• Read and understood the Code of Conduct.
• Searched for existing issues and pull requests.