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Is safe-array-concat ESM-only? Can you require() it?

`Array.prototype.concat`, but made safe by ignoring Symbol.isConcatSpreadable

Last verified Sep 9, 2026 against safe-array-concat@1.1.4. JSON

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

safe-array-concat ships CommonJS only. require("safe-array-concat") works everywhere. import "safe-array-concat" 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
1.1.4 (Apr 20, 2026)
Module format
CommonJS
Last CommonJS version
1.1.4
TypeScript types
Bundled
Node engines
>=0.4
Weekly downloads
74.5M
License
MIT

Does safe-array-concat@1.1.4 actually load? Runtime test results

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

Runtimerequire("safe-array-concat")import "safe-array-concat"
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 safe-array-concat

ES modules (import)

import safeArrayConcat from "safe-array-concat";

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 safeArrayConcat = require("safe-array-concat");

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
1.0.0 – 1.1.4CommonJSApr 20, 2023

Frequently asked

Is safe-array-concat ESM-only?

safe-array-concat@1.1.4 is a CommonJS package. safe-array-concat ships CommonJS only. require("safe-array-concat") works everywhere. import "safe-array-concat" 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 safe-array-concat with ES module syntax?

Yes. import safeArrayConcat from "safe-array-concat" 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 safe-array-concat work in Bun?

Yes. import "safe-array-concat" loaded successfully in Bun 1.4 on Sep 9, 2026.

Does safe-array-concat ship TypeScript types?

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

Links

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