qs: Querystring Parser and Stringifier

qs is a robust JavaScript library for parsing and stringifying URL query strings, with comprehensive support for nesting objects and arrays. It is currently on version 6.15.1 and maintains a steady release cadence with a focus on stability and security patches. Key differentiators include its configurable depth limits for parsing, the ability to handle URI-encoded strings, and built-in protections against prototype pollution through options like `plainObjects` and `allowPrototypes` (which is dangerous if enabled). Unlike the native `querystring` module in Node.js, `qs` offers more advanced features like array indexing and custom parsing/stringifying logic, making it suitable for complex data structures often found in web applications.