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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. Markdown · 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 with a plain require()-able CommonJS entry is 1.1.1, published Jul 23, 2026; it declares support for Node.js >= 0.8.

On Node.js 20.19+, 22.12+ and newer, require("media-typer") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. On Node.js 18, which has no require(esm), require("media-typer") fails with ERR_REQUIRE_ESM.

What to do

  1. On Node.js 20.19+, 22.12+ and newer, require("media-typer") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26.
  2. From a CommonJS file, use a dynamic import inside an async function: const mediaTyper = await import("media-typer"). That works on every Node.js version the package supports (>=18).
  3. If you need a synchronous require() or run Node.js 18: npm install media-typer@1.1.1, the last CommonJS release (published Jul 23, 2026); it declares Node.js >= 0.8.
  4. TypeScript: npm install -D @types/media-typer
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 1.4.0✓ works✓ works

How to import media-typer

ES modules (import)

import * as mediaTyper from "media-typer";

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

CommonJS (require)

// Node.js 20.19+, 22.12+ and newer (verified):
const mediaTyper = require("media-typer");

// Any Node.js version the package supports (>=18), from an async function:
async function main() {
  const mediaTyper = await import("media-typer");
}

// Or pin the last CommonJS release (declares Node.js >= 0.8):
// 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, corrected where a runtime test of that version contradicted them (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 with a plain require()-able CommonJS entry is 1.1.1, published Jul 23, 2026; it declares support for Node.js >= 0.8.

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

1.1.1 is the last version of media-typer with a CommonJS build; it declares Node.js >= 0.8. 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?

From a CommonJS file, use a dynamic import inside an async function: const mediaTyper = await import("media-typer"). That works on every Node.js version the package supports (>=18). On Node.js 20.19+, 22.12+ and newer, require("media-typer") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26. Alternatively pin media-typer@1.1.1 (declares Node.js >= 0.8).

Does media-typer work in Bun?

Yes. import "media-typer" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does media-typer ship TypeScript types?

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

Links

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