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Is is-shared-array-buffer ESM-only? Can you require() it?

Is this value a JS SharedArrayBuffer?

Last verified Sep 9, 2026 against is-shared-array-buffer@1.0.4. JSON

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

is-shared-array-buffer ships CommonJS only. require("is-shared-array-buffer") works everywhere. import "is-shared-array-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
1.0.4 (Dec 18, 2024)
Module format
CommonJS
Last CommonJS version
1.0.4
TypeScript types
Bundled
Node engines
>= 0.4
Weekly downloads
78.4M
License
MIT

Does is-shared-array-buffer@1.0.4 actually load? Runtime test results

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

Runtimerequire("is-shared-array-buffer")import "is-shared-array-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 is-shared-array-buffer

ES modules (import)

import isSharedArrayBuffer from "is-shared-array-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 isSharedArrayBuffer = require("is-shared-array-buffer");

Module format by version

Derived from the type, main and exports fields of every stable release on npm (5 versions; the newest 5 shown).

VersionsFormatFirst published
1.0.0 – 1.0.4CommonJSMar 5, 2021

Frequently asked

Is is-shared-array-buffer ESM-only?

is-shared-array-buffer@1.0.4 is a CommonJS package. is-shared-array-buffer ships CommonJS only. require("is-shared-array-buffer") works everywhere. import "is-shared-array-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 is-shared-array-buffer with ES module syntax?

Yes. import isSharedArrayBuffer from "is-shared-array-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 is-shared-array-buffer work in Bun?

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

Does is-shared-array-buffer ship TypeScript types?

Yes. is-shared-array-buffer bundles its own type declarations; no @types package is needed.

Links

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