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canirequire › Dual (CommonJS + ESM) › lru-cache

Is lru-cache ESM-only? Can you require() it?

A cache object that deletes the least-recently-used items.

Last verified Sep 9, 2026 against lru-cache@11.5.2. Markdown · JSON

Dual (CommonJS + ESM) Dual package — require() works on every Node.js version we test; import works too

lru-cache publishes both a CommonJS entry and a native ESM entry (ESM added in 7.15.0). require("lru-cache") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js 20 || >=22. import "lru-cache" works alongside it.

What to do

  1. Nothing to change. require("lru-cache") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js 20 || >=22. import * as lruCache from "lru-cache" works alongside it; use named imports for what the ESM entry exports.
  2. TypeScript: types are bundled; install nothing extra.
Latest
11.5.2 (Jul 7, 2026)
Module format
Dual (CommonJS + ESM)
Last CommonJS version
11.5.2
Native ESM since
7.15.0
TypeScript types
Bundled
Node engines
20 || >=22
Weekly downloads
390.6M
License
BlueOak-1.0.0

Does lru-cache@11.5.2 actually load? Runtime test results

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

Runtimerequire("lru-cache")import "lru-cache"
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 lru-cache

ES modules (import)

import * as lruCache from "lru-cache";

Namespace import shown because the ESM entry may have no default export; use named imports for what it exports.

CommonJS (require)

const lruCache = require("lru-cache");

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 (163 versions; the newest 60 shown).

VersionsFormatFirst published
7.16.0 – 11.5.2Dual (CommonJS + ESM)Feb 16, 2023

Frequently asked

Is lru-cache ESM-only?

lru-cache@11.5.2 ships CommonJS and ESM builds. lru-cache publishes both a CommonJS entry and a native ESM entry (ESM added in 7.15.0). require("lru-cache") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js 20 || >=22. import "lru-cache" works alongside it.

Can I require lru-cache?

Yes. lru-cache ships a CommonJS entry alongside the native ESM entry. require("lru-cache") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js 20 || >=22.

Does lru-cache work in Bun?

Yes. import "lru-cache" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

Does lru-cache ship TypeScript types?

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

Links

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