Running SSR Server does not work with Typescript

I'm evaluating this plugin to use with a Vue-CLI project created with Typescript.

Repro steps:
`vue create new-project`
`vue add @vue/typescript`
`vue add @akryum/ssr`
`npm run ssr:serve`

Result: When opening localhost:8000, I get an error from the server on initial render: `TypeError: runner is not a function`.

Expected Result: Example app renders as expected.

Let me know if this is on the radar already? I'm pretty interested in this project so I would be happy to attempt to contribute a solution to this issue.

demo repo: https://github.com/hmillison/vue-ssr-plugin-reproduction.git