• @testing-library/react version: 14.2.0
• Testing Framework and version: N/A
• DOM Environment: N/A

Relevant code or config:

const MyValidComponent = () => "Components can return strings";

render(<MyValidComponent />)

Results in the following typescript error:

'MyValidComponent' cannot be used as a JSX component.
Its return type '"test" | Element | null' is not a valid JSX element.

Problem description:

The types for this package define render's ui property as ReactElement (here). This doesn't seem right since this excludes all kinds of valid react component return types.

Suggested solution:

render's ui property should be typed as ReactNode instead.