Mish Ushakov
f10989813c
Fixes #1579. Bare `require` references in the SDK's ESM source made tsdown emit an eager `createRequire(import.meta.url)` shim at module scope in `dist/index.mjs`, which throws in Cloudflare Workers (workerd) where `import.meta.url` is undefined in bundled code — so `import 'e2b'` crashed before any API call. `sha256` now uses WebCrypto directly (the `node:crypto` fallback was dead code, since package engines require Node ≥ 20.18.1 and `globalThis.crypto` exists on all supported runtimes), and `getCallerDirectory` loads `fileURLToPath` via a static top-level `import url from 'node:url'`, matching the existing sibling `node:fs`/`node:os`/`node:path` imports in the same file. `dynamicRequire` is removed entirely (no remaining callers), and a new bundle test (`tests/bundle/edgeCompat.test.ts`) fails the suite if a `require` shim ever reappears in `dist/index.mjs` — it skips locally when `dist/` hasn't been built and throws in CI, where the workflow always builds first. Verified against the issue's repro in real workerd via wrangler: `e2b@2.35.1` reproduces the crash, while this build imports cleanly and runs a full sandbox lifecycle from inside a Worker. Also verified: chromium browser test, Bun runtime test, signing/secure tests (WebCrypto signatures accepted end-to-end), and the full template suite (134 tests) against live infra. ### Usage No API changes — importing the SDK in a Cloudflare Worker (with `nodejs_compat`) now works again: ```ts import { Sandbox } from 'e2b' export default { async fetch(request: Request, env: Env) { const sandbox = await Sandbox.create({ apiKey: env.E2B_API_KEY }) const result = await sandbox.commands.run('echo hello from workerd') await sandbox.kill() return Response.json({ stdout: result.stdout }) }, } ``` 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
What is E2B?
E2B is an open-source infrastructure that allows you to run AI-generated code in secure isolated sandboxes in the cloud. To start and control sandboxes, use our JavaScript SDK or Python SDK.
Run your first Sandbox
1. Install SDK
JavaScript / TypeScript
npm i e2b
Python
pip install e2b
2. Get your E2B API key
E2B_API_KEY=e2b_***
3. Start a sandbox and run commands
JavaScript / TypeScript
import Sandbox from 'e2b'
const sandbox = await Sandbox.create()
const result = await sandbox.commands.run('echo "Hello from E2B!"')
console.log(result.stdout) // Hello from E2B!
Python
from e2b import Sandbox
with Sandbox.create() as sandbox:
result = sandbox.commands.run('echo "Hello from E2B!"')
print(result.stdout) # Hello from E2B!
4. Code execution with Code Interpreter
If you need to execute code with runCode()/run_code(), install the Code Interpreter SDK:
npm i @e2b/code-interpreter # JavaScript/TypeScript
pip install e2b-code-interpreter # Python
import { Sandbox } from '@e2b/code-interpreter'
const sandbox = await Sandbox.create()
const execution = await sandbox.runCode('x = 1; x += 1; x')
console.log(execution.text) // outputs 2
5. Check docs
Visit E2B documentation.
6. E2B cookbook
Visit our Cookbook to get inspired by examples with different LLMs and AI frameworks.
Self-hosting
Read the self-hosting guide to learn how to set up the E2B infrastructure on your own. The infrastructure is deployed using Terraform.
Supported cloud providers:
- 🟢 AWS
- 🟢 Google Cloud (GCP)
- Azure
- General Linux machine