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Is safer-buffer ESM-only? Can you require() it?

Modern Buffer API polyfill without footguns

Last verified Sep 9, 2026 against safer-buffer@2.1.2. JSON

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

safer-buffer ships CommonJS only. require("safer-buffer") works everywhere. import "safer-buffer" 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.

Latest
2.1.2 (Apr 8, 2018)
Module format
CommonJS
Last CommonJS version
2.1.2
TypeScript types
@types/safer-buffer
Node engines
not declared
Weekly downloads
110.7M
License
MIT

Does safer-buffer@2.1.2 actually load? Runtime test results

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

Runtimerequire("safer-buffer")import "safer-buffer"
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 safer-buffer

ES modules (import)

import saferBuffer from "safer-buffer";

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 saferBuffer = require("safer-buffer");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (6 versions; the newest 6 shown).

VersionsFormatFirst published
2.0.0 – 2.1.2CommonJSMar 19, 2018

Frequently asked

Is safer-buffer ESM-only?

safer-buffer@2.1.2 is a CommonJS package. safer-buffer ships CommonJS only. require("safer-buffer") works everywhere. import "safer-buffer" 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 safer-buffer with ES module syntax?

Yes. import saferBuffer from "safer-buffer" 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 safer-buffer work in Bun?

Yes. import "safer-buffer" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does safer-buffer ship TypeScript types?

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

Links

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