Prefer input container in output container type inference

Author: eps1lon

types/index.d.ts

@@ -46,17 +46,17 @@ type Omit<T, K extends keyof T> = Pick<T, Exclude<keyof T, K>>
 /**
  * Render into a container which is appended to document.body. It should be used with cleanup.
  */
-export function render(
-  ui: React.ReactElement,
-  options?: Omit<RenderOptions, 'queries'>,
-): RenderResult
 export function render<
   Q extends Queries,
   Container extends Element | DocumentFragment = HTMLElement
 >(
   ui: React.ReactElement,
   options: RenderOptions<Q, Container>,
 ): RenderResult<Q, Container>
+export function render(
+  ui: React.ReactElement,
+  options?: Omit<RenderOptions, 'queries'>,
+): RenderResult
 
 /**
  * Unmounts React trees that were mounted with render.

types/test.tsx

@@ -44,11 +44,7 @@ export function testRenderOptions() {
   const container = document.createElement('div')
   const options = {container}
   const {container: returnedContainer} = render(<button />, options)
-  // Unclear why TypeScript infers `HTMLElement` here when the the input `container` is `HTMLDivElement`.
-  // It's working for `testSVGRenderOptions`. 
-  // Hopefully this breaks someday and we can switch to
-  // expectType<HTMLDivElement, typeof returnedContainer>(returnedContainer)
-  expectType<HTMLElement, typeof returnedContainer>(returnedContainer)
+  expectType<HTMLDivElement, typeof returnedContainer>(returnedContainer)
 }
 
 export function testSVGRenderOptions() {