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Is dotenv-expand ESM-only? Can you require() it?

Expand environment variables using dotenv

Last verified Sep 9, 2026 against dotenv-expand@1000.0.0. JSON

CommonJS CommonJS — require() works on every Node.js version

dotenv-expand ships CommonJS only. require("dotenv-expand") works everywhere. import "dotenv-expand" 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.

Latest
1000.0.0 (Jul 29, 2026)
Module format
CommonJS
Last CommonJS version
1000.0.0
TypeScript types
Bundled
Node engines
>=16
Weekly downloads
36.7M
License
BSD-3-Clause

Does dotenv-expand@1000.0.0 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("dotenv-expand") from a CommonJS file and import "dotenv-expand" from an ES module.

Runtimerequire("dotenv-expand")import "dotenv-expand"
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 dotenv-expand

ES modules (import)

import dotenvExpand from "dotenv-expand";

Named imports from a CommonJS package only work when Node.js can statically detect them. If a named import fails, use the default import and destructure.

CommonJS (require)

const dotenvExpand = require("dotenv-expand");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (30 versions; the newest 30 shown).

VersionsFormatFirst published
0.1.0 – 1000.0.0CommonJSJan 21, 2016

Frequently asked

Is dotenv-expand ESM-only?

dotenv-expand@1000.0.0 is a CommonJS package. dotenv-expand ships CommonJS only. require("dotenv-expand") works everywhere. import "dotenv-expand" 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 dotenv-expand with ES module syntax?

Yes. import dotenvExpand from "dotenv-expand" 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 dotenv-expand work in Bun?

Yes. import "dotenv-expand" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does dotenv-expand ship TypeScript types?

Yes. dotenv-expand bundles its own type declarations; no @types package is needed.

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