Building and maintaining a React library can be challenging due to the numerous configuration options and tools required, especially when ensuring compatibility with platforms like Next.js. A crucial part of the process involves verifying that the library functions as expected when integrated into real applications, which can be cumbersome with tools like npm link due to issues like duplicate React versions. To address this, the tool yalc offers a streamlined alternative for local package management by allowing developers to publish their library locally without exposing it to the public. This avoids common pitfalls such as cryptic errors related to invalid hook calls and duplicate React versions, simplifying the workflow. Yalc operates similarly to a public npm publish, but with the added benefit of local testing, thus bringing ease and efficiency to React library development amidst an evolving ecosystem.