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Is @protobufjs/fetch ESM-only? Can you require() it?

Fetches the contents of a file accross node and browsers.

Last verified Sep 9, 2026 against @protobufjs/fetch@1.1.1. Markdown · JSON

CommonJS CommonJS — require() works on every Node.js version we test

@protobufjs/fetch ships CommonJS only. require("@protobufjs/fetch") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "@protobufjs/fetch" 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("@protobufjs/fetch") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun.
  2. From ES modules use the default import: import fetch from "@protobufjs/fetch"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: types are bundled; install nothing extra.
Latest
1.1.1 (May 17, 2026)
Module format
CommonJS
Last CommonJS version
1.1.1
TypeScript types
Bundled
Node engines
not declared
Weekly downloads
49.5M
License
BSD-3-Clause

Does @protobufjs/fetch@1.1.1 actually load? Runtime test results

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

Runtimerequire("@protobufjs/fetch")import "@protobufjs/fetch"
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 1.4.0✓ works✓ works

How to import @protobufjs/fetch

ES modules (import)

import fetch from "@protobufjs/fetch";

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 fetch = require("@protobufjs/fetch");

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 – 1.1.1CommonJSDec 12, 2016

Frequently asked

Is @protobufjs/fetch ESM-only?

@protobufjs/fetch@1.1.1 is a CommonJS package. @protobufjs/fetch ships CommonJS only. require("@protobufjs/fetch") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. import "@protobufjs/fetch" 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 @protobufjs/fetch with ES module syntax?

Yes. import fetch from "@protobufjs/fetch" 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 @protobufjs/fetch work in Bun?

Yes. import "@protobufjs/fetch" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does @protobufjs/fetch ship TypeScript types?

Yes. @protobufjs/fetch bundles its own type declarations; no @types package is needed.

Links

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