lesslint

library1.0.3jsnpmunverified

A Less CSS linter for checking code quality and style consistency. Version 1.0.3 (stable, low release cadence). Integrates with Less syntax checking, offering rule-based validation. Differentiated by being one of few dedicated Less linters, though development is sparse compared to stylelint with Less plugins.

testing

npm install lesslint

github ↗package ↗

INSTALL

IMPORT

SIG · LESSLINT

lesslint

testingjavascriptv1.0.3

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

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

lesslint

✓ import lesslint from 'lesslint'

✗ const lesslint = require('lesslint')

Default ESM export; CJS not available since v1.0.0.

Linter

✓ import { Linter } from 'lesslint'

✗ import Linter from 'lesslint/Linter'

Named export for class-based usage.

rules

✓ import { rules } from 'lesslint'

✗ const rules = require('lesslint').rules

Named export for built-in rules configuration.

less

✓ import less from 'less'

✗ const less = require('less')

Required peer dependency for Less parsing; must be ESM.

Lint a Less code string using lesslint. Demonstrates async linting with result messages.

import lesslint from 'lesslint'; import less from 'less'; const code = `@color: red;\n.class { color: @color; }`; lesslint.lint(code).then(result => { console.log(result.messages); }).catch(err => console.error(err));

lesslint --version

Debug

Known issues

gotchalesslint requires the 'less' package as a peer dependency; not installing it leads to runtime errors.

fix

Run 'npm install less' alongside lesslint.

affects: >=1.0.0

gotchalesslint is ESM-only; CommonJS require will fail with Module 'lesslint' does not provide an export named 'default'.

fix

Use import instead of require, or set type: "module" in package.json.

affects: >=1.0.0

deprecatedThe 'rules' export is deprecated as of 1.0.3; it may be removed in future versions.

fix

Access rules directly from linter instance or use custom configuration.

affects: 1.0.3

breakingVersion 1.0.0 removed the synchronous lint() API; all methods are now async.

fix

Update code to use async/await or promises.

affects: >=1.0.0 <1.0.0

Errors

Common errors & fixes

Error: Cannot find module 'less'

Missing peer dependency 'less'.

fix

npm install less

TypeError: lesslint.lint is not a function

Using CJS require with ESM-only package.

fix

Change to import lesslint from 'lesslint'.

SyntaxError: Unexpected token '.' (when importing)

Package is ESM but project is CJS.

fix

Set "type": "module" in package.json or use dynamic import().

Upgrade

Version history

1.0.3latest on npm

Audit

Dependencies

lessrequiredparses Less code for linting

Agent activity

6 hits · last 30 days

node

Resources

githubhttps://github.com/ecomfe/node-lesslint ↗

packagehttps://www.npmjs.com/package/lesslint ↗