Question 1

How to add a timeout to regex in JavaScript?

Accepted Answer

Use super-regex methods like isMatchAsync with a timeout option in milliseconds. For example, import isMatchAsync and call it with a regex, string, and {timeout: 1000} to limit execution to one second.

Question 2

Does super-regex work in all browsers?

Accepted Answer

Yes, but only the async methods (e.g., isMatchAsync) support timeouts in browsers via worker threads. Synchronous methods won't time out in browsers, so use async for client-side security.

Question 3

What's the difference between super-regex and built-in regex methods?

Accepted Answer

Super-regex adds timeout protection and a non-mutating API, preventing ReDoS and state bugs. Built-in methods are faster but can run indefinitely and mutate regex objects with the /g flag.

Question 4

How to handle regex timeouts in Node.js with super-regex?

Accepted Answer

Use either sync methods (which time out in Node.js) or async methods for non-blocking execution. Set the timeout option and consider throwOnTimeout to differentiate between timeouts and no matches.

Question 5

Super-regex vs function-timeout for regex?

Accepted Answer

Super-regex is specialized for regex with dedicated methods and worker thread support, while function-timeout is a general-purpose timeout wrapper. Choose super-regex for regex-specific safety and better API integration.

Question 6

Can super-regex prevent all ReDoS attacks?

Accepted Answer

It mitigates ReDoS by timing out long-running regex, but it doesn't fix poorly designed patterns. Combine it with regex auditing tools for comprehensive protection against malicious input.

super-regex

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