canirequire

canirequire › Dual (CommonJS + ESM) › is-plain-object

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

Returns true if an object was created by the `Object` constructor, or Object.create(null).

Last verified Sep 9, 2026 against is-plain-object@5.1.0. JSON

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

is-plain-object publishes both a CommonJS entry and a native ESM entry (ESM added in 5.0.0). require("is-plain-object") and import "is-plain-object" both work on every supported Node.js version and in Bun.

Latest
5.1.0 (Aug 21, 2026)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
5.1.0
Native ESM since
5.0.0
TypeScript types
Bundled
Node engines
>=0.10.0
Weekly downloads
67.4M
License
MIT

Does is-plain-object@5.1.0 actually load? Runtime test results

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

Runtimerequire("is-plain-object")import "is-plain-object"
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 is-plain-object

ES modules (import)

import isPlainObject from "is-plain-object";

CommonJS (require)

const isPlainObject = require("is-plain-object");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (14 versions; the newest 14 shown).

VersionsFormatFirst published
5.0.0 – 5.1.0Dual (CommonJS + ESM)Sep 9, 2020
0.1.0 – 4.1.1CommonJSSep 21, 2014

Frequently asked

Is is-plain-object ESM-only?

is-plain-object@5.1.0 ships CommonJS and ESM builds. is-plain-object publishes both a CommonJS entry and a native ESM entry (ESM added in 5.0.0). require("is-plain-object") and import "is-plain-object" both work on every supported Node.js version and in Bun.

Can I require is-plain-object?

Yes. is-plain-object ships a CommonJS entry, so require("is-plain-object") works on every Node.js version, alongside the native ESM entry for import.

Does is-plain-object work in Bun?

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

Does is-plain-object ship TypeScript types?

Yes. is-plain-object bundles its own type declarations; no @types package is needed.

Links

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