steps to reproduce without downloading this git repository.

Create a new project using yarn and vite

yarn create vite

Give the project a name.

Pick React and Typescript for the project lang

cd <project-name>

Add dependencies using Yarn add

yarn add react react-dom @emotion/react tiny-invariant memoize-one;
yarn add @atlaskit/pragmatic-drag-and-drop \
  @atlaskit/pragmatic-drag-and-drop-flourish \
  @atlaskit/pragmatic-drag-and-drop-hitbox \
  @atlaskit/pragmatic-drag-and-drop-live-region \
  @atlaskit/pragmatic-drag-and-drop-react-drop-indicator;
yarn add @atlaskit/tokens @atlaskit/css-reset @atlaskit/ds-lib @emotion/react;
yarn add @atlaskit/button \
  @atlaskit/dropdown-menu \
  @atlaskit/icon \
  @atlaskit/modal-dialog \
  @atlaskit/form \
  @atlaskit/select \
  @atlaskit/focus-ring \
  @atlaskit/app-provider;

Change directory and create folders. Use -p to do it all at once

mkdir -p src/pragmatic-drag-and-drop/documentation/examples/data
mkdir -p src/pragmatic-drag-and-drop/documentation/examples/pieces/tree

Go to Tree @codesandbox and copy the files to the appropriate folders.

Edit main.tsx to load css-reset instead of ./index.css and Example from ./example.tsx instead of the default App.tsx

In tree-item.tsx, remove the old React16 style render logic inside onGenerateDragPreview. Replace it with React 18 style rendering. Don't forget to change the include file at the top to point to react-dom

Change import ReactDOM from 'react-dom'; to import { createRoot } from 'react-dom/client';

And

						render: ({ container }) => {
							ReactDOM.render(<Preview item={item} />, container);
							return () => ReactDOM.unmountComponentAtNode(container);
						},

to

    render: ({ container }) => {
      const root = createRoot(container);
      root.render(<Preview item={item} />);

      // Cleanup on unmount
      return () => root.unmount();
    },

End main Content

React + TypeScript + Vite

This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.

Currently, two official plugins are available:

• @vitejs/plugin-react uses Babel for Fast Refresh
• @vitejs/plugin-react-swc uses SWC for Fast Refresh

Expanding the ESLint configuration

If you are developing a production application, we recommend updating the configuration to enable type aware lint rules:

• Configure the top-level parserOptions property like this:

export default tseslint.config({
  languageOptions: {
    // other options...
    parserOptions: {
      project: ['./tsconfig.node.json', './tsconfig.app.json'],
      tsconfigRootDir: import.meta.dirname,
    },
  },
})

• Replace tseslint.configs.recommended to tseslint.configs.recommendedTypeChecked or tseslint.configs.strictTypeChecked
• Optionally add ...tseslint.configs.stylisticTypeChecked
• Install eslint-plugin-react and update the config:

// eslint.config.js
import react from 'eslint-plugin-react'

export default tseslint.config({
  // Set the react version
  settings: { react: { version: '18.3' } },
  plugins: {
    // Add the react plugin
    react,
  },
  rules: {
    // other rules...
    // Enable its recommended rules
    ...react.configs.recommended.rules,
    ...react.configs['jsx-runtime'].rules,
  },
})

pdnd-example-tree