Function simulateExit

src/ssh/__tests__/SSHSessionManager.test.ts:71–79

(code = 0)

      stdoutController.enqueue(encoder.encode(data + '\n'))
    },
    simulateExit(code = 0) {
      exitCode = code
      try {
        stdoutController.close()
      } catch {
        // may already be closed
      }
      for (const resolve of exitResolvers) resolve(code)
    },
  }
}