react-scripts test not working if we use declare context statement inside a class component

[manojadams]

Describe the bug

Facing problem while running tests.

Seems like react-scripts do not support following statement inside class components
declare context: React.ContextType<typeof FormContext>;

Did you try recovering your dependencies?

No

(paste the output of the command here.)

Steps to reproduce

(Write your steps here:)

1. Create an app using command npx create-react-app my-app --template typescript
2. Create a class component :

import React, { Fragment } from "react";

class TestAbc extends React.Component {
    declare context: React.ContextType<typeof FormContext>;

    render() {
        return <Fragment>Hi</Fragment>
    }
    
}

3. Create a test case for component created in above step

import React from 'react';
import { render, screen } from '@testing-library/react';
import App from './App';
import TestAbc from './TestAbc';

test('renders learn react link', () => {
  render(<TestAbc />);
});

4. Run test case using command: npm run test

Expected behaviour

Test case should pass

Actual behaviour

Giving error while running test.

Reproducible demo