canirequire › Dual (CommonJS + ESM) › long
Is long ESM-only? Can you require() it?
A Long class for representing a 64-bit two's-complement integer value.
Last verified Sep 9, 2026 against long@5.3.2. JSON
Dual (CommonJS + ESM) Dual package — both require() and import work
long publishes both a CommonJS entry and a native ESM entry (ESM added in 5.0.0). require("long") and import "long" both work on every supported Node.js version and in Bun.
Does long@5.3.2 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("long") from a CommonJS file and import "long" from an ES module.
| Runtime | require("long") | import "long" |
|---|---|---|
| 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 long
ES modules (import)
import long from "long";CommonJS (require)
const long = require("long");Module format by version
Derived from the type, main and exports fields of every stable release on npm (39 versions; the newest 39 shown).
| Versions | Format | First published |
|---|---|---|
| 5.1.0 – 5.3.2 | Dual (CommonJS + ESM) | Oct 30, 2021 |
| 5.0.0 – 5.0.1 | ESM-only | Oct 28, 2021 |
| 1.0.0 – 4.0.0 | CommonJS | Mar 12, 2013 |
Frequently asked
Is long ESM-only?
long@5.3.2 ships CommonJS and ESM builds. long publishes both a CommonJS entry and a native ESM entry (ESM added in 5.0.0). require("long") and import "long" both work on every supported Node.js version and in Bun.
Can I require long?
Yes. long ships a CommonJS entry, so require("long") works on every Node.js version, alongside the native ESM entry for import.
Does long work in Bun?
Yes. import "long" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does long ship TypeScript types?
Yes. long bundles its own type declarations; no @types package is needed.
Links
Other dual (commonjs + esm) packages
- minimatch 10.2.6Dual
- brace-expansion 5.0.9Dual
- lru-cache 11.5.2Dual
- glob 13.0.6Dual
- eslint-visitor-keys 5.0.1Dual
- yallist 5.0.0Dual
- balanced-match 4.0.4Dual
- js-yaml 5.4.1Dual
Similar popularity
- es-to-primitive 1.3.4CommonJS
- sax 1.6.1CommonJS
- @eslint/plugin-kit 0.7.3Dual
- pump 3.0.4CommonJS
- gcp-metadata 9.0.3CommonJS
- side-channel-weakmap 1.0.2CommonJS
- is-shared-array-buffer 1.0.4CommonJS
- expect-type 1.4.0CommonJS