DefinitelyTyped/types/react-native-drawer/react-native-drawer-tests.tsx

import * as React from 'react';
import { Button, ScaledSize, View } from 'react-native';
import Drawer from 'react-native-drawer';

class DrawerTest extends React.Component<{}, {open: boolean}> {
    state = {
        open: true
    };

    render() {
        return (
            <Drawer
              type="overlay"
              open={this.state.open}
              content={<View />}
              onOpen={this.onOpen}
              onClose={this.onClose}
              closedDrawerOffset={100}
              openDrawerOffset={(viewport: ScaledSize) => 50}
              side={ "bottom" }
              acceptPanOnDrawer={ true }
              onDragStart={ () => {} }
            >
            </Drawer>
        );
    }

    private readonly onOpen = () => {
      this.setState({open: true});
    }

    private readonly onClose = () => {
      this.setState({open: false});
    }
}

const DrawerTest2: React.FC = () => {
    const ref = React.useRef<Drawer>(null);

    return (
        <Drawer ref={ref}>
            <Button title='Close' onPress={() => ref.current!.close()} />
        </Drawer>
    );
};