How to use the react-native-testing-library.fireEvent.changeText function in react-native-testing-library

beforeEach(() => {
      sendHandler = jest.fn();

      ({getByTestId} = render());

      fireEvent.changeText(getByTestId('messageText'), messageText);
      fireEvent.press(getByTestId('sendButton'));
    });

public fillAmount(amount: string) {
    const input = this.getInput();
    fireEvent.changeText(input, amount);
  }

beforeEach(() => {
      sendHandler = jest.fn();
      ({ getByTestId } = render());

      fireEvent.changeText(getByTestId('messageText'), messageText);
      fireEvent.press(getByTestId('sendButton'));
    });

it('* emits onChangeText', () => {
    const onChangeText = jest.fn();

    const component: RenderAPI = renderComponent({ onChangeText });

    fireEvent.changeText(component.getByType(TextInput), 'it works!');

    expect(onChangeText).toBeCalledWith('it works!');
  });

it('* changes text', () => {
    const component: RenderAPI = render(
      ,
    );

    const input: ReactTestInstance = component.getByType(TextInput);

    fireEvent.changeText(input, 'it works!');

    const updatedInput: ReactTestInstance = component.getByType(TextInput);

    expect(updatedInput.props.value).toEqual('it works!');
  });