From random chunks to real code — wiring up Next.js source maps in Sentry

When deploying a Next.js application, the code written in React and TypeScript is transformed into optimized JavaScript chunks, enhancing performance but complicating debugging due to minified stack traces. To address this, source maps and debug IDs are utilized, allowing tools like Sentry to map errors back to the original code, providing readable stack traces. During development, browsers can directly access source maps, offering clear traces without Sentry. However, for production builds, source maps must be uploaded to Sentry to ensure accurate error tracking. Developers are advised to use local debugging tools like Spotlight to avoid unnecessary Sentry quota usage during development. Properly configuring and verifying source map integration with Sentry ensures that stack traces reflect the actual code, aiding in efficient debugging and error resolution.