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Is node-int64 ESM-only? Can you require() it?

Support for representing 64-bit integers in JavaScript

Last verified Sep 9, 2026 against node-int64@0.4.0. JSON

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

node-int64 ships CommonJS only. require("node-int64") works everywhere. import "node-int64" 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
0.4.0 (Apr 4, 2015)
Module format
CommonJS
Last CommonJS version
0.4.0
TypeScript types
@types/node-int64
Node engines
not declared
Weekly downloads
28.8M
License
MIT

Does node-int64@0.4.0 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("node-int64") from a CommonJS file and import "node-int64" from an ES module.

Runtimerequire("node-int64")import "node-int64"
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 node-int64

ES modules (import)

import nodeInt64 from "node-int64";

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 nodeInt64 = require("node-int64");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (7 versions; the newest 7 shown).

VersionsFormatFirst published
0.1.0 – 0.4.0CommonJSDec 30, 2010

Frequently asked

Is node-int64 ESM-only?

node-int64@0.4.0 is a CommonJS package. node-int64 ships CommonJS only. require("node-int64") works everywhere. import "node-int64" 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 node-int64 with ES module syntax?

Yes. import nodeInt64 from "node-int64" 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 node-int64 work in Bun?

Yes. import "node-int64" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does node-int64 ship TypeScript types?

Not bundled. Install the community types with "npm install -D @types/node-int64".

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