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Is html-encoding-sniffer ESM-only? Can you require() it?

Sniff the encoding from a HTML byte stream

Last verified Sep 9, 2026 against html-encoding-sniffer@6.0.0. Markdown · JSON

CommonJS CommonJS — require() works on Node.js 20, 22, 24 and 26, fails on 18

html-encoding-sniffer ships CommonJS only. require("html-encoding-sniffer") works on Node.js 20, 22, 24 and 26 but fails on Node.js 18 (ERR_REQUIRE_ESM). The package declares Node.js ^20.19.0 || ^22.12.0 || >=24.0.0. import "html-encoding-sniffer" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

What to do

  1. require("html-encoding-sniffer") works on Node.js 20, 22, 24 and 26 but fails on Node.js 18 (ERR_REQUIRE_ESM). The package declares Node.js ^20.19.0 || ^22.12.0 || >=24.0.0.
  2. From ES modules use the default import: import htmlEncodingSniffer from "html-encoding-sniffer"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: npm install -D @types/html-encoding-sniffer
Latest
6.0.0 (Dec 26, 2025)
Module format
CommonJS
Last CommonJS version
6.0.0
TypeScript types
@types/html-encoding-sniffer
Node engines
^20.19.0 || ^22.12.0 || >=24.0.0
Weekly downloads
85.4M
License
MIT

Does html-encoding-sniffer@6.0.0 actually load? Runtime test results

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

Runtimerequire("html-encoding-sniffer")import "html-encoding-sniffer"
Node.js 18✗ failsERR_REQUIRE_ESM✗ failsERR_REQUIRE_ESM
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

A failing require() on a CommonJS package usually means the package needs a browser/DOM global, a peer dependency, or a native binary that is not available in a bare Node.js process.

How to import html-encoding-sniffer

ES modules (import)

import htmlEncodingSniffer from "html-encoding-sniffer";

Named imports from a CommonJS package only work when Node.js can statically detect them. If a named import fails, use the default import and destructure.

CommonJS (require)

const htmlEncodingSniffer = require("html-encoding-sniffer");

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 (9 versions; the newest 9 shown).

VersionsFormatFirst published
1.0.0 – 6.0.0CommonJSOct 16, 2016

Frequently asked

Is html-encoding-sniffer ESM-only?

html-encoding-sniffer@6.0.0 is a CommonJS package. html-encoding-sniffer ships CommonJS only. require("html-encoding-sniffer") works on Node.js 20, 22, 24 and 26 but fails on Node.js 18 (ERR_REQUIRE_ESM). The package declares Node.js ^20.19.0 || ^22.12.0 || >=24.0.0. import "html-encoding-sniffer" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

Can I import html-encoding-sniffer with ES module syntax?

Yes. import htmlEncodingSniffer from "html-encoding-sniffer" works in Node.js and Bun because they support importing CommonJS modules. Named imports work only when Node.js can statically detect the exports.

Does html-encoding-sniffer work in Bun?

Yes. import "html-encoding-sniffer" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does html-encoding-sniffer ship TypeScript types?

Not bundled. Install the community types with "npm install -D @types/html-encoding-sniffer".

Links

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