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Is micromark-util-character ESM-only? Can you require() it?

micromark utility to handle character codes

Last verified Sep 9, 2026 against micromark-util-character@2.1.1. Markdown · JSON

ESM-only ESM-only — it has never shipped a CommonJS build

micromark-util-character has been ESM-only since its first stable release; there is no CommonJS version to pin.

On Node.js 20.19+, 22.12+ and newer, require("micromark-util-character") 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("micromark-util-character") fails with ERR_REQUIRE_ESM.

What to do

  1. On Node.js 20.19+, 22.12+ and newer, require("micromark-util-character") 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 micromarkUtilCharacter = await import("micromark-util-character"). That works on every Node.js version the package supports.
  3. There is no CommonJS release of micromark-util-character to pin; without require(esm) the only option is a dynamic import().
  4. TypeScript: types are bundled; install nothing extra.
Latest
2.1.1 (Nov 12, 2024)
Module format
ESM-only
Last CommonJS version
none
ESM-only since
1.0.0 (Jun 22, 2021)
TypeScript types
Bundled
Node engines
not declared
Weekly downloads
59.0M
License
MIT

Does micromark-util-character@2.1.1 actually load? Runtime test results

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

Runtimerequire("micromark-util-character")import "micromark-util-character"
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 micromark-util-character

ES modules (import)

import * as micromarkUtilCharacter from "micromark-util-character";

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 micromarkUtilCharacter = require("micromark-util-character");

// Any Node.js version the package supports, from an async function:
async function main() {
  const micromarkUtilCharacter = await import("micromark-util-character");
}

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
1.0.0 – 2.1.1ESM-onlyJun 22, 2021

Frequently asked

Is micromark-util-character ESM-only?

micromark-util-character@2.1.1 is ESM-only. micromark-util-character has been ESM-only since its first stable release; there is no CommonJS version to pin.

Which version of micromark-util-character still supports CommonJS / require()?

None. micromark-util-character has always been ESM-only. Use import, or a dynamic import("micromark-util-character") from an async function in CommonJS.

How do I use micromark-util-character from a CommonJS file?

From a CommonJS file, use a dynamic import inside an async function: const micromarkUtilCharacter = await import("micromark-util-character"). That works on every Node.js version the package supports. On Node.js 20.19+, 22.12+ and newer, require("micromark-util-character") works with the latest version: Node.js loads synchronous ES modules through require(). Verified on Node.js 20, 22, 24 and 26.

Does micromark-util-character work in Bun?

Yes. import "micromark-util-character" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does micromark-util-character ship TypeScript types?

Yes. micromark-util-character bundles its own type declarations; no @types package is needed.

Links

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