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Version: Next

Quick Start


  • Node.js version: Node.js 12.13.0 +
  • React.js version: React.js 16.14.0 +
  • Yarn - Recommend to use Yarn as package management

use the node -v command to view the current Node version. It is recommended to use nvm on Mac systems to manage multiple versions of Node.js.

Create a Project in One Line

We provide a command line tool to create a project quickly. It uses create-react-app to create this project.


npx @dtinsight/create molecule-demo

Or create the project based on the TypeScript template

npx @dtinsight/create molecule-demo -t

npx comes with npm 5.2+ and higher, see instructions for older npm versions


yarn create @dtinsight/ molecule-demo

Or create the project based on the TypeScript template

yarn create @dtinsight/ molecule-demo -t

yarn create is available in Yarn 0.25+

Startup Project

After waiting a second, you could see Happy coding!😊 in terminal. And then just following the guide to start up your project.

Create a Project Manually

We use the create-react-app scaffolding tool officially recommended by React as an example, Here we strongly recommend the use of the Typescript template:

npx create-react-app molecule-demo --template typescript

This command will create a directory called molecule-demo in the current directory and switch to the project folder:

cd molecule-demo

Install Molecule

Then, you need to install the dependency of molecule:

yarn add @dtinsight/molecule
# or
npm install @dtinsight/molecule

This command will automatically install Molecule's dependencies in the molecule-demo project.

Basic Use

Open the src/App.js file and replace the contents of the file with the following:

import React from 'react';
import { create, Workbench } from '@dtinsight/molecule';
import '@dtinsight/molecule/esm/style/mo.css';

const moInstance = create({
extensions: [],

const App = () => moInstance.render(<Workbench />);

export default App;

extensions are extensions that need to be customized.

And open the src/index.js file and change it to the following:

- <React.StrictMode>
<App />
- </React.StrictMode>

It's noticed that the Molecule for now is not compatible with React.StrictMode. So we should remove React.StrictMode from src/index.js.

Startup Project

Finally, run the start command in the terminal:

yarn start
# or npm
npm run start

This command will automatically open the address http://localhost:3000 in the default browser, and you can see the default IDE interface of Molecule.


Use Monaco Editor language pack

Now, you can see the page in browser, but that's not enough. If you want to develop an Web IDE with specific language. You should use the language pack of Monaco Editor to highlight the language in Web IDE.

To use the language pack of Monaco Editor, you need to use the plugin monaco-editor-webpack-plugin, so here we have to extend the default configuration of Webpack. First, we install the react-app-rewired, and then create a config-overrides.js file in the project's root directory to override the default Webpack configuration. The specific usage of the monaco-editor-webpack-plugin plugin is as follows:

const MonacoWebpackPlugin = require('monaco-editor-webpack-plugin');

/* config-overrides.js */
module.exports = function override(config, env) {
//do stuff with the webpack config...
config.plugins = [
new MonacoWebpackPlugin([

return config;

For the complete code example, please check the molecule-demo project.