Type instantiation is excessively deep and possibly infinite bug

To reproduce:

1. npm i
2. npx tsc

This will generate the following error:

src/server.ts:9:3 - error TS2589: Type instantiation is excessively deep and possibly infinite.

  9   fastify.post(
      ~~~~~~~~~~~~~
 10     '/',
    ~~~~~~~~
...
 28     }
    ~~~~~
 29   );
    ~~~


Found 1 error in src/server.ts:9