import Dropzone from 'react-dnd-dropzone';

<Dropzone
  onDrop={files => console.log(files)}
  render={({ canDrop, isOver }) => (
    <div>
      Drop file here!
      <pre>{JSON.stringify({ canDrop, isOver })}</pre>
    </div>
  )}
/>;

import * as React from 'react';
import { DragDropContext } from 'react-dnd';
import HTML5Backend from 'react-dnd-html5-backend';
import { DropTarget, Target } from 'react-dnd-dropzone';

const HTML5DropContext = DragDropContext(HTML5Backend)(({ children }) => (
  <div>{children}</div>
));
const Dropzone = DropTarget(Target);

const App = () => (
  <HTML5DropContext>
    <Dropzone
      onDrop={files => console.log(files)}
      render={({ canDrop, isOver }) => (
        <div>
          <pre>{JSON.stringify({ canDrop, isOver }, null, 2)}</pre>
        </div>
      )}
    />
  </HTML5DropContext>
);

type DropzoneProps = {
  onDrop: (files: Array<File>, monitor: any) => void,
  render: ({ canDrop: boolean, isOver: boolean }) => React.Element<any>,
  accepts?: Array<string>,
};