# Is @opentelemetry/resources ESM-only? Can you require() it?

> @opentelemetry/resources@2.11.0 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

OpenTelemetry SDK resources

Last verified Sep 9, 2026 against @opentelemetry/resources@2.11.0.

@opentelemetry/resources ships CommonJS only. require("@opentelemetry/resources") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^18.19.0 || >=20.6.0. import "@opentelemetry/resources" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

It also declares a "module" field, so bundlers such as webpack, Vite and esbuild pick up an ESM build for tree-shaking.

## What to do

1. require("@opentelemetry/resources") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^18.19.0 || >=20.6.0.
2. From ES modules use the default import: import resources from "@opentelemetry/resources"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: types are bundled; install nothing extra.

## Facts

- Latest: 2.11.0 (Aug 31, 2026)
- Module format: CommonJS
- Last CommonJS version: 2.11.0
- TypeScript types: bundled
- Node engines: ^18.19.0 || >=20.6.0
- Weekly downloads: 88.7M
- License: Apache-2.0

## Runtime test results for @opentelemetry/resources@2.11.0

Installed and executed on Sep 9, 2026 with require("@opentelemetry/resources") from a CommonJS file and import "@opentelemetry/resources" from an ES module.

| Runtime | require("@opentelemetry/resources") | import "@opentelemetry/resources" |
|---|---|---|
| Node.js 18 | works | works |
| Node.js 20 | works | works |
| Node.js 22 | works | works |
| Node.js 24 | works | works |
| Node.js 26 | works | works |
| Bun 1.4.0 | works | works |

## How to import @opentelemetry/resources

ES modules:

```js
import resources from "@opentelemetry/resources";
```

CommonJS:

```js
const resources = require("@opentelemetry/resources");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (91 versions; the newest 60 shown).

| Versions | Format | First published |
|---|---|---|
| 0.26.0 – 2.11.0 | CommonJS | Sep 30, 2021 |

## Frequently asked

**Is @opentelemetry/resources ESM-only?**

@opentelemetry/resources@2.11.0 is a CommonJS package. @opentelemetry/resources ships CommonJS only. require("@opentelemetry/resources") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js ^18.19.0 || >=20.6.0. import "@opentelemetry/resources" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

**Can I import @opentelemetry/resources with ES module syntax?**

Yes. import resources from "@opentelemetry/resources" works in Node.js and Bun because they support importing CommonJS modules. Named imports work only when Node.js can statically detect the exports.

**Does @opentelemetry/resources work in Bun?**

Yes. import "@opentelemetry/resources" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does @opentelemetry/resources ship TypeScript types?**

Yes. @opentelemetry/resources bundles its own type declarations; no @types package is needed.

## Links

- [@opentelemetry/resources on npm](https://www.npmjs.com/package/@opentelemetry/resources)
- [Source repository](https://github.com/open-telemetry/opentelemetry-js)
- [HTML version](https://canirequire.com/package/@opentelemetry/resources/)
- [JSON version](https://canirequire.com/package/@opentelemetry/resources.json)

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