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Is media-typer ESM-only? Can you require() it?

Simple RFC 6838 media type parser and formatter

Last verified Sep 9, 2026 against media-typer@2.0.0. JSON

ESM-only ESM-only since 2.0.0 — last CommonJS version is 1.1.1

media-typer dropped its CommonJS build in 2.0.0 (May 2026). The last version you can require() on every Node.js version, including 18 and older, is 1.1.1, published Jul 23, 2026.

On Node.js 20.19+, 22.12+ and every newer release, require("media-typer") 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 27, 2026)
Module format
ESM-only
Last CommonJS version
1.1.1
ESM-only since
2.0.0 (May 27, 2026)
TypeScript types
@types/media-typer
Node engines
>=18
Weekly downloads
77.7M
License
MIT

Does media-typer@2.0.0 actually load? Runtime test results

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

Runtimerequire("media-typer")import "media-typer"
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 media-typer

ES modules (import)

import mediaTyper from "media-typer";

CommonJS (require)

// Node.js 20.19+ / 22.12+ / newer (package has no top-level await):
const mediaTyper = require("media-typer");

// Any Node.js version:
const mediaTyper = await import("media-typer");

// Or pin the last CommonJS release:
// npm install media-typer@1.1.1

Module format by version

Derived from the type, main and exports fields of every stable release on npm (10 versions; the newest 10 shown).

VersionsFormatFirst published
2.0.0ESM-onlyMay 27, 2026
0.0.0 – 1.1.1CommonJSJun 13, 2014

Frequently asked

Is media-typer ESM-only?

media-typer@2.0.0 is ESM-only. media-typer dropped its CommonJS build in 2.0.0 (May 2026). The last version you can require() on every Node.js version, including 18 and older, is 1.1.1, published Jul 23, 2026.

Which version of media-typer still supports CommonJS / require()?

1.1.1 is the last version of media-typer with a CommonJS build. Install it with "npm install media-typer@1.1.1". Every version from 2.0.0 on is ESM-only.

How do I use media-typer from a CommonJS file?

Use a dynamic import: const mod = await import("media-typer"). On Node.js 20.19+, 22.12+ and newer, a plain require("media-typer") also works for ESM packages that do not use top-level await. Alternatively pin media-typer@1.1.1.

Does media-typer work in Bun?

Yes. import "media-typer" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does media-typer ship TypeScript types?

Not bundled. Install the community types with "npm install -D @types/media-typer".

Links

Other esm-only packages

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