Ballerina Playground

Ballerina playground is a web-based tool for trying out language features, hosted at https://play.ballerina.io/, with the native Ballerina interpreter source at https://github.com/ballerina-nutcracker/ballerina.

Getting started

Prerequisites

• Go 1.26 or later
• Bun 1.3.10 or later

Clone repository

Clone with submodules:

git clone --recurse-submodules https://github.com/ballerina-nutcracker/playground

If you already cloned without submodules:

git submodule update --init --recursive

Install dependencies

From the repository root:

bun install

Code structure

• apps/web/: Web frontend that loads ballerina.wasm and provides the editor/runner UI.
• packages/wasm/: Go module that builds ballerina.wasm for the browser runtime.
• packages/wasm/ballerina/: Ballerina interpreter git submodule used by the WASM runtime.
• scripts/: Supporting scripts used for development and maintenance tasks.

Development

Run the playground in development mode from the repository root:

bun run dev