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Is get-proto ESM-only? Can you require() it?

Robustly get the [[Prototype]] of an object

Last verified Sep 9, 2026 against get-proto@1.0.1. JSON

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

get-proto ships CommonJS only. require("get-proto") works everywhere. import "get-proto" 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
1.0.1 (Jan 2, 2025)
Module format
CommonJS
Last CommonJS version
1.0.1
TypeScript types
Bundled
Node engines
>= 0.4
Weekly downloads
122.0M
License
MIT

Does get-proto@1.0.1 actually load? Runtime test results

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

Runtimerequire("get-proto")import "get-proto"
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 get-proto

ES modules (import)

import getProto from "get-proto";

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 getProto = require("get-proto");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (2 versions; the newest 2 shown).

VersionsFormatFirst published
1.0.0 – 1.0.1CommonJSJan 2, 2025

Frequently asked

Is get-proto ESM-only?

get-proto@1.0.1 is a CommonJS package. get-proto ships CommonJS only. require("get-proto") works everywhere. import "get-proto" 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 get-proto with ES module syntax?

Yes. import getProto from "get-proto" 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 get-proto work in Bun?

Yes. import "get-proto" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does get-proto ship TypeScript types?

Yes. get-proto bundles its own type declarations; no @types package is needed.

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