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canirequire › Dual (CommonJS + ESM) › @aws-sdk/core

Is @aws-sdk/core ESM-only? Can you require() it?

Core functions & classes shared by multiple AWS SDK clients.

Last verified Sep 9, 2026 against @aws-sdk/core@3.977.9. JSON

Dual (CommonJS + ESM) Dual package — both require() and import work

@aws-sdk/core publishes both a CommonJS entry and a native ESM entry (ESM added in 3.576.0). require("@aws-sdk/core") and import "@aws-sdk/core" both work on every supported Node.js version and in Bun.

Latest
3.977.9 (Aug 21, 2026)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
3.977.9
Native ESM since
3.576.0
TypeScript types
Bundled
Node engines
>=20.0.0
License
Apache-2.0

Does @aws-sdk/core@3.977.9 actually load? Runtime test results

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

Runtimerequire("@aws-sdk/core")import "@aws-sdk/core"
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✓ works✓ works

How to import @aws-sdk/core

ES modules (import)

import core from "@aws-sdk/core";

CommonJS (require)

const core = require("@aws-sdk/core");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (230 versions; the newest 60 shown).

VersionsFormatFirst published
3.973.13 – 3.977.9Dual (CommonJS + ESM)Feb 24, 2026

Frequently asked

Is @aws-sdk/core ESM-only?

@aws-sdk/core@3.977.9 ships CommonJS and ESM builds. @aws-sdk/core publishes both a CommonJS entry and a native ESM entry (ESM added in 3.576.0). require("@aws-sdk/core") and import "@aws-sdk/core" both work on every supported Node.js version and in Bun.

Can I require @aws-sdk/core?

Yes. @aws-sdk/core ships a CommonJS entry, so require("@aws-sdk/core") works on every Node.js version, alongside the native ESM entry for import.

Does @aws-sdk/core work in Bun?

Yes. import "@aws-sdk/core" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does @aws-sdk/core ship TypeScript types?

Yes. @aws-sdk/core bundles its own type declarations; no @types package is needed.

Links

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