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canirequire › Dual (CommonJS + ESM) › proxy-from-env

Is proxy-from-env ESM-only? Can you require() it?

Offers getProxyForUrl to get the proxy URL for a URL, respecting the *_PROXY (e.g. HTTP_PROXY) and NO_PROXY environment variables.

Last verified Sep 9, 2026 against proxy-from-env@2.1.0. Markdown · JSON

Dual (CommonJS + ESM) Dual package — require() works on every Node.js version we test; import works too

proxy-from-env publishes both a CommonJS entry and a native ESM entry (ESM added in 2.0.0). require("proxy-from-env") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=10. import "proxy-from-env" works alongside it.

What to do

  1. Nothing to change. require("proxy-from-env") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=10. import * as proxyFromEnv from "proxy-from-env" works alongside it; use named imports for what the ESM entry exports.
  2. TypeScript: npm install -D @types/proxy-from-env
Latest
2.1.0 (Mar 14, 2026)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
2.1.0
Native ESM since
2.0.0
TypeScript types
@types/proxy-from-env
Node engines
>=10
Weekly downloads
112.3M
License
MIT

Does proxy-from-env@2.1.0 actually load? Runtime test results

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

Runtimerequire("proxy-from-env")import "proxy-from-env"
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 proxy-from-env

ES modules (import)

import * as proxyFromEnv from "proxy-from-env";

Namespace import shown because the ESM entry may have no default export; use named imports for what it exports.

CommonJS (require)

const proxyFromEnv = require("proxy-from-env");

Module format by version

Derived from the type, main and exports fields of every stable release on npm, corrected where a runtime test of that version contradicted them (7 versions; the newest 7 shown).

VersionsFormatFirst published
2.1.0Dual (CommonJS + ESM)Mar 14, 2026
2.0.0ESM-onlyFeb 9, 2026
0.0.1 – 1.1.0CommonJSFeb 18, 2016

Frequently asked

Is proxy-from-env ESM-only?

proxy-from-env@2.1.0 ships CommonJS and ESM builds. proxy-from-env publishes both a CommonJS entry and a native ESM entry (ESM added in 2.0.0). require("proxy-from-env") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=10. import "proxy-from-env" works alongside it.

Can I require proxy-from-env?

Yes. proxy-from-env ships a CommonJS entry alongside the native ESM entry. require("proxy-from-env") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=10.

Does proxy-from-env work in Bun?

Yes. import "proxy-from-env" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does proxy-from-env ship TypeScript types?

Not bundled. Install the community types with "npm install -D @types/proxy-from-env".

Links

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