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Is is-interactive ESM-only? Can you require() it?

Check if stdout or stderr is interactive

Last verified Sep 9, 2026 against is-interactive@2.0.0. JSON

ESM-only ESM-only since 2.0.0 — last CommonJS version is 1.0.0

is-interactive dropped its CommonJS build in 2.0.0 (May 2021). The last version you can require() on every Node.js version, including 18 and older, is 1.0.0, published Jul 21, 2019.

On Node.js 20.19+, 22.12+ and every newer release, require("is-interactive") works anyway: Node can load synchronous ES modules through require(). Verified on Node 20, 22, 24, 26. Node.js 18 and older still fail with ERR_REQUIRE_ESM.

Latest
2.0.0 (May 3, 2021)
Module format
ESM-only
Last CommonJS version
1.0.0
ESM-only since
2.0.0 (May 3, 2021)
TypeScript types
None
Node engines
>=12
Weekly downloads
60.6M
License
MIT

Does is-interactive@2.0.0 actually load? Runtime test results

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

Runtimerequire("is-interactive")import "is-interactive"
Node.js 18✗ failsERR_REQUIRE_ESM✓ 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 is-interactive

ES modules (import)

import isInteractive from "is-interactive";

CommonJS (require)

// Node.js 20.19+ / 22.12+ / newer (package has no top-level await):
const isInteractive = require("is-interactive");

// Any Node.js version:
const isInteractive = await import("is-interactive");

// Or pin the last CommonJS release:
// npm install is-interactive@1.0.0

Module format by version

Derived from the type, main and exports fields of every stable release on npm (3 versions; the newest 3 shown).

VersionsFormatFirst published
2.0.0ESM-onlyMay 3, 2021
0.1.0 – 1.0.0CommonJSJul 6, 2019

Frequently asked

Is is-interactive ESM-only?

is-interactive@2.0.0 is ESM-only. is-interactive dropped its CommonJS build in 2.0.0 (May 2021). The last version you can require() on every Node.js version, including 18 and older, is 1.0.0, published Jul 21, 2019.

Which version of is-interactive still supports CommonJS / require()?

1.0.0 is the last version of is-interactive with a CommonJS build. Install it with "npm install is-interactive@1.0.0". Every version from 2.0.0 on is ESM-only.

How do I use is-interactive from a CommonJS file?

Use a dynamic import: const mod = await import("is-interactive"). On Node.js 20.19+, 22.12+ and newer, a plain require("is-interactive") also works for ESM packages that do not use top-level await. Alternatively pin is-interactive@1.0.0.

Does is-interactive work in Bun?

Yes. import "is-interactive" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does is-interactive ship TypeScript types?

No. is-interactive ships no type declarations and there is no @types package for it.

Links

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