canirequire › Dual (CommonJS + ESM) › less-loader
Is less-loader ESM-only? Can you require() it?
A Less loader for webpack. Compiles Less to CSS.
Last verified Sep 9, 2026 against less-loader@13.0.0. JSON
Dual (CommonJS + ESM) Dual package — both require() and import work
less-loader publishes both a CommonJS entry and a native ESM entry (ESM added in 13.0.0). require("less-loader") and import "less-loader" both work on every supported Node.js version and in Bun.
Does less-loader@13.0.0 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("less-loader") from a CommonJS file and import "less-loader" from an ES module.
| Runtime | require("less-loader") | import "less-loader" |
|---|---|---|
| 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 less-loader
ES modules (import)
import lessLoader from "less-loader";CommonJS (require)
const lessLoader = require("less-loader");Module format by version
Derived from the type, main and exports fields of every stable release on npm (73 versions; the newest 60 shown).
| Versions | Format | First published |
|---|---|---|
| 13.0.0 | Dual (CommonJS + ESM) | May 20, 2026 |
| 0.7.1 – 12.3.3 | CommonJS | Jan 28, 2014 |
Frequently asked
Is less-loader ESM-only?
less-loader@13.0.0 ships CommonJS and ESM builds. less-loader publishes both a CommonJS entry and a native ESM entry (ESM added in 13.0.0). require("less-loader") and import "less-loader" both work on every supported Node.js version and in Bun.
Can I require less-loader?
Yes. less-loader ships a CommonJS entry, so require("less-loader") works on every Node.js version, alongside the native ESM entry for import.
Does less-loader work in Bun?
Yes. import "less-loader" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does less-loader ship TypeScript types?
Yes. less-loader bundles its own type declarations; no @types package is needed.
Links
Other dual (commonjs + esm) packages
- minimatch 10.2.6Dual
- brace-expansion 5.0.9Dual
- lru-cache 11.5.2Dual
- glob 13.0.6Dual
- eslint-visitor-keys 5.0.1Dual
- yallist 5.0.0Dual
- balanced-match 4.0.4Dual
- js-yaml 5.4.1Dual
Similar popularity
- cypress 16.0.0Dual
- lit 3.3.3ESM-only
- babel-core 6.26.3CommonJS
- esm 3.2.25CommonJS
- eslint-plugin-storybook 10.6.0No entry
- react-select 5.10.2Dual
- mongoose 9.9.5CommonJS
- ncp 2.0.0CommonJS