Run untrusted code with Vercel Sandbox

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import { Sandbox } from "@vercel/sandbox";
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import { generateText } from 'ai';
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const result = await generateText({
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    model: "anthropic/claude-4-sonnet-20250514",
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    prompt: `Write a Node.js script that prints a Haiku poem to stdout.`,
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    system: `
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      You are a developer that responds with the content of a single Node.js script.
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      You must include only the code without any markdown, nothing else.
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      Just include Javascript code and no characters before or after the code.
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    `,
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  });
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  const sandbox = await Sandbox.create();
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  await sandbox.writeFiles([
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    { path: "script.js", stream: Buffer.from(result.text) },
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  ]);
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  await sandbox.runCommand({
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    cmd: "node",
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    args: ["script.js"],
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    stdout: process.stdout,
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    stderr: process.stderr,
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  });