opensandbox-group--opensandbox/sdks/code-interpreter/javascript/README.md

Alibaba Code Interpreter SDK for JavaScript/TypeScript

A TypeScript/JavaScript SDK for executing code in secure, isolated sandboxes. It provides a high-level API for running Python, Java, Go, TypeScript, and other languages safely, with support for code execution contexts.

Prerequisites

This SDK requires a Docker image containing the Code Interpreter runtime environment. You must use the opensandbox/code-interpreter image (or a derivative) which includes pre-installed runtimes for Python, Java, Go, Node.js, etc.

For detailed information about supported languages and versions, please refer to the Environment Documentation.

Installation

npm

npm install @alibaba-group/opensandbox-code-interpreter

pnpm

pnpm add @alibaba-group/opensandbox-code-interpreter

yarn

yarn add @alibaba-group/opensandbox-code-interpreter

Quick Start

The following example demonstrates how to create a sandbox with a specific runtime configuration and execute a simple script.

Note

: Before running this example, ensure the OpenSandbox service is running. See the root README.md for startup instructions.

import { ConnectionConfig, Sandbox } from "@alibaba-group/opensandbox";
import { CodeInterpreter, SupportedLanguages } from "@alibaba-group/opensandbox-code-interpreter";

// 1. Configure connection
const config = new ConnectionConfig({
  domain: "api.opensandbox.io",
  apiKey: "your-api-key",
});

// 2. Create a Sandbox with the code-interpreter image + runtime versions
const sandbox = await Sandbox.create({
  connectionConfig: config,
  image: "opensandbox/code-interpreter:v1.1.0",
  entrypoint: ["/opt/code-interpreter/code-interpreter.sh"],
  env: {
    PYTHON_VERSION: "3.11",
    JAVA_VERSION: "17",
    NODE_VERSION: "20",
    GO_VERSION: "1.24",
  },
  timeoutSeconds: 15 * 60,
});

// 3. Create CodeInterpreter wrapper
const ci = await CodeInterpreter.create(sandbox);

// 4. Create an execution context (Python)
const ctx = await ci.codes.createContext(SupportedLanguages.PYTHON);

// 5. Run code
const result = await ci.codes.run("import sys\nprint(sys.version)\nresult = 2 + 2\nresult", {
  context: ctx,
});

// 6. Print output
console.log(result.result[0]?.text);

// 7. Cleanup remote instance (optional but recommended)
await sandbox.kill();
await sandbox.close();

Runtime Configuration

Docker Image

The Code Interpreter SDK relies on a specialized environment. Ensure your sandbox provider has the opensandbox/code-interpreter image available.

Language Version Selection

You can specify the desired version of a programming language by setting the corresponding environment variable when creating the Sandbox.

Language	Environment Variable	Example Value	Default (if unset)
Python	PYTHON_VERSION	3.11	Image default
Java	JAVA_VERSION	17	Image default
Node.js	NODE_VERSION	20	Image default
Go	GO_VERSION	1.24	Image default

const sandbox = await Sandbox.create({
  connectionConfig: config,
  image: "opensandbox/code-interpreter:v1.1.0",
  entrypoint: ["/opt/code-interpreter/code-interpreter.sh"],
  env: {
    JAVA_VERSION: "17",
    GO_VERSION: "1.24",
  },
});

Usage Examples

0. Run with language (default language context)

If you don't need to manage explicit context IDs, you can run code by specifying only language. When context.id is omitted, execd can create/reuse a default session for that language, so state can persist across runs.

import { SupportedLanguages } from "@alibaba-group/opensandbox-code-interpreter";

await ci.codes.run("x = 42", { language: SupportedLanguages.PYTHON });
const execution = await ci.codes.run("result = x\nresult", { language: SupportedLanguages.PYTHON });
console.log(execution.result[0]?.text); // "42"

0.1 Context management (list/get/delete)

You can manage contexts explicitly (aligned with Python/Kotlin SDKs):

const ctx = await ci.codes.createContext(SupportedLanguages.PYTHON);

const same = await ci.codes.getContext(ctx.id!);
console.log(same.id, same.language);

const all = await ci.codes.listContexts();
const pyOnly = await ci.codes.listContexts(SupportedLanguages.PYTHON);

await ci.codes.deleteContext(ctx.id!);
await ci.codes.deleteContexts(SupportedLanguages.PYTHON); // bulk cleanup

1. Java Code Execution

import { SupportedLanguages } from "@alibaba-group/opensandbox-code-interpreter";

const javaCtx = await ci.codes.createContext(SupportedLanguages.JAVA);
const execution = await ci.codes.run(
  [
    'System.out.println("Calculating sum...");',
    "int a = 10;",
    "int b = 20;",
    "int sum = a + b;",
    'System.out.println("Sum: " + sum);',
    "sum",
  ].join("\n"),
  { context: javaCtx },
);
console.log(execution.logs.stdout.map((m) => m.text));

2. Streaming Output Handling

Handle stdout/stderr and execution events in real-time.

import type { ExecutionHandlers } from "@alibaba-group/opensandbox";
import { SupportedLanguages } from "@alibaba-group/opensandbox-code-interpreter";

const handlers: ExecutionHandlers = {
  onStdout: (m) => console.log("STDOUT:", m.text),
  onStderr: (m) => console.error("STDERR:", m.text),
  onResult: (r) => console.log("RESULT:", r.text),
};

const pyCtx = await ci.codes.createContext(SupportedLanguages.PYTHON);
await ci.codes.run("import time\nfor i in range(5):\n    print(i)\n    time.sleep(0.2)", {
  context: pyCtx,
  handlers,
});

Notes

• Lifecycle: CodeInterpreter wraps an existing Sandbox instance and reuses its connection configuration. Each sandbox instance clones the transport via ConnectionConfig.withTransportIfMissing(), so call sandbox.close() when you are finished to release the Node.js keep-alive agent and avoid leak.
• Default context: codes.run(..., { language }) uses a language default context (state can persist across runs).