Does it make sense to transpile TypeScript test code when using ts-jest?

I am just wondering if the JavaScript files generated from the TypeScript test files could be of any use later, since type-checking if part of their job (testing), what could we use their JavaScript form for?

Concretely, my tsconfig.json looks like this:

{
  "include": ["./src/**/*"],
  "exclude": ["./src/__tests__/**/*"],
  "compilerOptions": {
    "rootDir": "./src",
    "outDir": "./build",
    ...
  }
}

I am excluding all test files, they are stored in the ./src/__tests__ folder.

So my question comes down to should I keep the exclude setting or not ? What would I need the generated JavaScript test files for ?