# Expo app (/docs/template/examples/expo)

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Related: [Next.js app](/docs/template/examples/nextjs.md), [Next.js app (Bun)](/docs/template/examples/nextjs-bun.md), [Desktop](/docs/template/examples/desktop.md), [Claude Code](/docs/template/examples/claude-code.md), [Docker](/docs/template/examples/docker.md)

Basic Expo app.

<Note>
  The development server runs on port 8081 as soon as the sandbox is ready.
</Note>

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  <CodeBlockTabs defaultValue="JavaScript & TypeScript" groupId="javascript-typescript+python">
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        JavaScript & TypeScript
      </CodeBlockTabsTrigger>

      <CodeBlockTabsTrigger value="Python">
        Python
      </CodeBlockTabsTrigger>
    </CodeBlockTabsList>

    <CodeBlockTab value="JavaScript & TypeScript">
      ```typescript  
      // template.ts
      import { defaultBuildLogger, waitForURL } from "e2b";

      export const template = Template()
        .fromNodeImage()
        .setWorkdir("/home/user/expo-app")
        .runCmd("npx create-expo-app@latest . --yes")
        .runCmd("mv /home/user/expo-app/* /home/user/ && rm -rf /home/user/expo-app")
        .setWorkdir("/home/user")
        .setStartCmd("npx expo start", waitForURL("http://localhost:8081"));
      ```
    </CodeBlockTab>

    <CodeBlockTab value="Python">
      ```python  
      # template.py
      from e2b import Template, wait_for_url

      template = (
          Template()
          .from_node_image()
          .set_workdir("/home/user/expo-app")
          .run_cmd("npx create-expo-app@latest . --yes")
          .run_cmd("mv /home/user/expo-app/* /home/user/ && rm -rf /home/user/expo-app")
          .set_workdir("/home/user")
          .set_start_cmd("npx expo start", wait_for_url('http://localhost:8081'))
      )
      ```
    </CodeBlockTab>
  </CodeBlockTabs>
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        JavaScript & TypeScript
      </CodeBlockTabsTrigger>

      <CodeBlockTabsTrigger value="Python">
        Python
      </CodeBlockTabsTrigger>
    </CodeBlockTabsList>

    <CodeBlockTab value="JavaScript & TypeScript">
      ```typescript  
      // build.ts
      import { Template, defaultBuildLogger } from 'e2b'
      import { template as expoTemplate } from './template'

      Template.build(expoTemplate, 'expo-app', {
        cpuCount: 4,
        memoryMB: 8192,
        onBuildLogs: defaultBuildLogger(),
      })
      ```
    </CodeBlockTab>

    <CodeBlockTab value="Python">
      ```python  
      # build.py
      from e2b import Template, default_build_logger
      from .template import template as expoTemplate

      Template.build(expoTemplate, 'expo-app',
          cpu_count=4,
          memory_mb=8192,
          on_build_logs=default_build_logger(),
      )
      ```
    </CodeBlockTab>
  </CodeBlockTabs>
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