canirequire › CommonJS › ieee754
Is ieee754 ESM-only? Can you require() it?
Read/write IEEE754 floating point numbers from/to a Buffer or array-like object
Last verified Sep 9, 2026 against ieee754@1.2.1. JSON
CommonJS CommonJS — require() works on every Node.js version
ieee754 ships CommonJS only. require("ieee754") works everywhere. import "ieee754" 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.
Does ieee754@1.2.1 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("ieee754") from a CommonJS file and import "ieee754" from an ES module.
| Runtime | require("ieee754") | import "ieee754" |
|---|---|---|
| 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 ieee754
ES modules (import)
import ieee754 from "ieee754";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 ieee754 = require("ieee754");Module format by version
Derived from the type, main and exports fields of every stable release on npm (17 versions; the newest 17 shown).
| Versions | Format | First published |
|---|---|---|
| 1.0.0 – 1.2.1 | CommonJS | Dec 28, 2013 |
Frequently asked
Is ieee754 ESM-only?
ieee754@1.2.1 is a CommonJS package. ieee754 ships CommonJS only. require("ieee754") works everywhere. import "ieee754" 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 ieee754 with ES module syntax?
Yes. import ieee754 from "ieee754" 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 ieee754 work in Bun?
Yes. import "ieee754" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does ieee754 ship TypeScript types?
Yes. ieee754 bundles its own type declarations; no @types package is needed.
Links
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