Interactive browser development environment for JavaScript
All in one code editor, execution environment, and note-taking app for JavaScript. Quickly try out npm packages, or take and save notes on new JavaScript concepts without the hassle of setting up a development environment. Try it out here!
- Compile and run your JavaScript code directly in the browser
- Extremely fast bundling with esbuild
- Easily download and import npm packages by name
- Utilizes the same editor that powers VS Code
- Code formatting using Prettier
- Write notes with a rich text editor
- Re-arrange code cells and their execution context instantly
- First-class support for React and JSX
- Download or upload your notebooks as JSON files
- Light and dark mode
Built using TypeScript, Next.js, React, and Tailwind CSS.
Bundling is done in the browser using the WASM version of esbuild. Packages are fetched with a custom esbuild plugin and then cached in IndexedDB for performance using localForage. Local state is managed using Redux Toolkit with a custom hook to easily get the execution context of the code cells.
UI Components were scaffolded using shadcn/ui. The code editor is @monaco-editor/react, a React wrapper for monaco-editor. The markdown editor is @uiw/react-md-editor.
- JSX highlighting
- Add support for TypeScript
- Ability to store notebooks in the cloud
- Public and private notebooks
- Real-time collaborative editing