Make screen query methods generic

[nstepien]

• @testing-library/dom version: 8.5.0
• Testing Framework and version: [email protected]
• DOM Environment: jsdom

Relevant code or config:

import { screen } from '@testing-library/dom';

screen.getByText<HTMLElement>('test');

What you did:

Defined a type argument for getByText

What happened:

> tsc

test.ts:3:18 - error TS2558: Expected 0 type arguments, but got 1.

3 screen.getByText<HTMLElement>('test');
                   ~~~~~~~~~~~

Reproduction:

import { screen } from '@testing-library/dom';

screen.getByText<HTMLElement>('test');

Problem description:

While the methods are generic, the way they're redefined on the screen object for example makes them lose their genericness.
Original request: #615
PR which made the methods generic: #1023

Suggested solution:

[timdeschryver]

I tried to solve this, but AFAIK there isn't a way to "automatically" add the generic to the queries of the screen object.
The only way I was able to add a generic, was to manually add the queries on screen.

I'll leave this open for someone that is able to add the generic "automatically".
If no-one is able to do this, I can open a PR with my current implementation.

[eps1lon]

If no-one is able to do this, I can open a PR with my current implementation.

Let's start with this. We can always improve later though from my understanding, we can't carry generics over automatically. So the manual approach is probably going to stick for a while.

[github-actions]

🎉 This issue has been resolved in version 8.7.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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