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Is @alloc/quick-lru ESM-only? Can you require() it?

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Last verified Sep 9, 2026 against @alloc/quick-lru@5.3.0. Markdown · JSON

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

@alloc/quick-lru ships CommonJS only. require("@alloc/quick-lru") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=10. import "@alloc/quick-lru" 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.

What to do

  1. require("@alloc/quick-lru") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=10.
  2. From ES modules use the default import: import quickLru from "@alloc/quick-lru"; then destructure. Named imports only work when Node.js can statically detect the exports.
  3. TypeScript: types are bundled; install nothing extra.
Latest
5.3.0 (Aug 31, 2026)
Module format
CommonJS
Last CommonJS version
5.3.0
TypeScript types
Bundled
Node engines
>=10
Weekly downloads
25.7M
License
MIT

Does @alloc/quick-lru@5.3.0 actually load? Runtime test results

Installed and executed on Sep 9, 2026 with require("@alloc/quick-lru") from a CommonJS file and import "@alloc/quick-lru" from an ES module.

Runtimerequire("@alloc/quick-lru")import "@alloc/quick-lru"
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 1.4.0✓ works✓ works

How to import @alloc/quick-lru

ES modules (import)

import quickLru from "@alloc/quick-lru";

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 quickLru = require("@alloc/quick-lru");

Module format by version

Derived from the type, main and exports fields of every stable release on npm, corrected where a runtime test of that version contradicted them (2 versions; the newest 2 shown).

VersionsFormatFirst published
5.2.0 – 5.3.0CommonJSApr 6, 2021

Frequently asked

Is @alloc/quick-lru ESM-only?

@alloc/quick-lru@5.3.0 is a CommonJS package. @alloc/quick-lru ships CommonJS only. require("@alloc/quick-lru") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=10. import "@alloc/quick-lru" 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 @alloc/quick-lru with ES module syntax?

Yes. import quickLru from "@alloc/quick-lru" 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 @alloc/quick-lru work in Bun?

Yes. import "@alloc/quick-lru" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does @alloc/quick-lru ship TypeScript types?

Yes. @alloc/quick-lru bundles its own type declarations; no @types package is needed.

Links

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