Next.js Server Components and AbortController Signal Propagation

Integrating the native AbortController API within Next.js Server Components allows for the management of long-running data fetches. By passing an AbortSignal to the fetch options, developers can programmatically terminate requests that exceed a specific time threshold or respond to client disconnections.

However, there is uncertainty regarding how signal propagation behaves across different runtimes. While the Node.js and Edge Runtimes both support AbortController, the mechanism for ensuring that a triggered abort immediately halts the execution of the surrounding asynchronous function—rather than just the network request—remains a point of architectural concern.

• Does the Next.js runtime provide a built-in signal that automatically triggers when a client disconnects during a Server Component render?
• How should AbortError exceptions be handled to prevent unhandled promise rejections without interfering with the framework's internal error boundaries?