Function normalizePortError

browse/src/server.ts:795–802

(err: unknown)

const RANDOM_PORT_RETRIES = 5;

function normalizePortError(err: unknown): Extract<PortCheckResult, { available: false }> {
  const maybeNodeError = err as NodeJS.ErrnoException | undefined;
  return {
    available: false,
    code: maybeNodeError?.code,
    message: maybeNodeError?.message || String(err),
  };
}

function isOccupiedPort(result: Extract<PortCheckResult, { available: false }>): boolean {
  return result.code === 'EADDRINUSE';