Registry / devops / rollup-plugin-less-modules

rollup-plugin-less-modules

library0.1.11jsnpmunverified

A Rollup plugin that compiles imported LESS files into CSS during bundling. Version 0.1.11 is the latest stable release (no update in several years). Designed for component-based architectures like Angular that need style encapsulation. Alternatives include rollup-plugin-postcss or rollup-plugin-styles; this plugin is lighter but limited to LESS only and lacks modern PostCSS features. It supports source maps, minification via clean-css, and optional separate CSS output file. The repository is archived (not actively maintained).

devops

npm install rollup-plugin-less-modules

github ↗package ↗

INSTALL

IMPORT

SIG · ROLLUP-PLUGIN-LESS

rollup-plugin-less-modules

devopsjavascriptv0.1.11

Install

—

Import

—

Disk

—

Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–223 runs

build_error

glibc

node 18–223 runs

build_error

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

default

✓ import lessModules from 'rollup-plugin-less-modules';

✗ const lessModules = require('rollup-plugin-less-modules');

Package is ESM-only. Using require() will not work.

lessModules

✓ import { lessModules } from 'rollup-plugin-less-modules';

✗ import lessModules from 'rollup-plugin-less-modules';

Correct named import is actually the default export; there is no named export 'lessModules'.

sourceMap

✓ import style, { sourceMap } from './index.less';

✗ import * as lessModule from './index.less';

The plugin enables default export (CSS string) and named export 'sourceMap' from .less files. Using namespace import breaks the naming convention.

Configures Rollup to compile imported LESS files and output a separate CSS bundle with inline source maps.

import { rollup } from 'rollup'; import lessModules from 'rollup-plugin-less-modules'; rollup({ input: 'src/index.js', output: { file: 'dist/bundle.js', format: 'es' }, plugins: [ lessModules({ output: 'dist/styles.css', sourcemap: 'inline' }) ] });

Debug

Known issues

breakingThe plugin does not work with Rollup >= 2.0 due to the removal of the bundle.transform hook.

fix

Use an alternative plugin like rollup-plugin-postcss.

affects: <=0.1.11

breakingDefault export changed from `lessModules` to `default` export in v0.1.0.

fix

Update imports: use `import lessModules from 'rollup-plugin-less-modules';`.

affects: <0.1.0

deprecatedThe `options.sourceMap` property is deprecated; use `sourcemap` at top-level options instead.

fix

Pass `sourcemap: true|false|'inline'` directly to the plugin.

affects: >=0.1.0

gotchaSource maps may have incorrect file paths if `options.filename` is not set in Less options.

fix

Set `options.filename` relative to project root.

affects: >=0.1.0

Errors

Common errors & fixes

Error: Could not find module 'rollup-plugin-less-modules' from '...'

The package is not installed or is missing from node_modules.

fix

Run `npm install --save-dev rollup-plugin-less-modules`.

TypeError: lessModules is not a function

Using require() in an ESM-only package, or incorrect import syntax.

fix

Use ES module import: `import lessModules from 'rollup-plugin-less-modules';`.

Error: The `output` option is not supported in rollup-plugin-less-modules v0.1.x. Use separate output if needed.

Using output configuration from Rollup plugin incorrectly.

fix

Pass `output` as a plugin option, not in Rollup's output config.

Upgrade

Version history

0.1.11latest on npm

Audit

Dependencies

postcssrequiredRequired peer dependency for CSS post-processing.

lessrequiredTransitive dependency for LESS compilation (installed by default with Node).

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/katrotz/rollup-plugin-less-modules ↗

packagehttps://www.npmjs.com/package/rollup-plugin-less-modules ↗