Deno Deploy 提供 Linux microVM 用于隔离代码执行。最适合 Deno 和 JavaScript 工作负载。

设置

    npm install @langchain/deno
    

    yarn add @langchain/deno
    

    pnpm add @langchain/deno
    

身份验证

从以下位置获取您的令牌 app.deno.com → 设置 → 组织令牌。

或直接传递凭证：

const sandbox = await DenoSandbox.create({
  auth: { token: "your-token-here" },
});

与 deepagents 配合使用

const sandbox = await DenoSandbox.create({
  memoryMb: 1024,
  lifetime: "10m",
});

try {
  const agent = createDeepAgent({
    model: new ChatAnthropic({ model: "claude-sonnet-4-20250514" }),
    systemPrompt: "You are a coding assistant with sandbox access.",
    backend: sandbox,
  });

  const result = await agent.invoke({
    messages: [{ role: "user", content: "Create a hello world Deno app and run it" }],
  });
} finally {
  await sandbox.close();
}

独立使用

const sandbox = await DenoSandbox.create({
  memoryMb: 1024,
  lifetime: "10m",
});

const result = await sandbox.execute("deno --version");
console.log(result.output);

await sandbox.close();

配置

可用区域

生命周期选项

• - "session" (default): Sandbox shuts down when you close/dispose the client
• - 时长字符串：保持沙箱存活特定时间（例如， "5m", "30s")

访问 Deno SDK

如需高级功能，请访问底层 Deno SDK：

const denoSandbox = await DenoSandbox.create();
const sdk = denoSandbox.sandbox;

// Expose HTTP port
const url = await sdk.exposeHttp({ port: 3000 });

// Expose SSH
const ssh = await sdk.exposeSsh();

// Evaluate JavaScript
const result = await sdk.eval("1 + 2");

// Set environment variables
await sdk.env.set("API_KEY", "secret");

// Shell template literals
const output = await sdk.sh`echo "Hello from Deno!"`.text();

// Start a JavaScript runtime
const runtime = await sdk.createJsRuntime({ entrypoint: "server.ts" });

重新连接到现有沙箱

重新连接需要基于时长的生命周期（不是 "session"):

// Create with duration lifetime
const sandbox = await DenoSandbox.create({
  memoryMb: 1024,
  lifetime: "30m",
});
const sandboxId = sandbox.id;
await sandbox.close(); // Close connection, sandbox keeps running

// Later: reconnect
const reconnected = await DenoSandbox.connect(sandboxId);
const result = await reconnected.execute("ls -la");

工厂函数

// Create new sandbox per invocation
const factory = createDenoSandboxFactory({ memoryMb: 1024 });

// Or reuse an existing sandbox across invocations
const sandbox = await DenoSandbox.create();
const reuseFactory = createDenoSandboxFactoryFromSandbox(sandbox);

错误处理

try {
  await sandbox.execute("some command");
} catch (error) {
  if (error instanceof DenoSandboxError) {
    switch (error.code) {
      case "NOT_INITIALIZED":
        await sandbox.initialize();
        break;
      case "COMMAND_TIMEOUT":
        console.error("Command took too long");
        break;
      case "AUTHENTICATION_FAILED":
        console.error("Check your Deno Deploy token");
        break;
    }
  }
}

错误代码

限制和约束

环境变量