Function fakeGateway

packages/server/test/start.test.ts:111–117

(
  listen: (host: string, port: number) => Promise<string>,
)

}

function fakeGateway(
  listen: (host: string, port: number) => Promise<string>,
): Parameters<typeof listenWithPortRetry>[0]['gateway'] {
  return { _serviceBrand: undefined, app: undefined, listen } as unknown as Parameters<
    typeof listenWithPortRetry
  >[0]['gateway'];
}

function addrInUse(): NodeJS.ErrnoException {
  const err = new Error('listen EADDRINUSE') as NodeJS.ErrnoException;