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Is mustache ESM-only? Can you require() it?

Logic-less {{mustache}} templates with JavaScript

Last verified Sep 9, 2026 against mustache@4.2.0. JSON

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

mustache publishes both a CommonJS entry and a native ESM entry (ESM added in 4.2.0). require("mustache") and import "mustache" both work on every supported Node.js version and in Bun.

Latest
4.2.0 (Mar 28, 2021)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
4.2.0
Native ESM since
4.2.0
TypeScript types
@types/mustache
Node engines
not declared
Weekly downloads
15.6M
License
MIT

Does mustache@4.2.0 actually load? Runtime test results

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

Runtimerequire("mustache")import "mustache"
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 mustache

ES modules (import)

import mustache from "mustache";

CommonJS (require)

const mustache = require("mustache");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (34 versions; the newest 34 shown).

VersionsFormatFirst published
4.2.0Dual (CommonJS + ESM)Mar 28, 2021
0.4.0 – 4.1.0CommonJSJan 9, 2012

Frequently asked

Is mustache ESM-only?

mustache@4.2.0 ships CommonJS and ESM builds. mustache publishes both a CommonJS entry and a native ESM entry (ESM added in 4.2.0). require("mustache") and import "mustache" both work on every supported Node.js version and in Bun.

Can I require mustache?

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

Does mustache work in Bun?

Yes. import "mustache" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does mustache ship TypeScript types?

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

Links

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