lesshint is a tool to aid you in writing clean and consistent Less.

• Installation
• Configuration
• Rules
• CLI usage
• Complementary tools
• Linters
• Reporters
• Developer resources

Node.js 6 (or later) is required.

Run the following from the command line to install lesshint (add -g to install globally):

npm install lesshint

For information on how to configure lesshint and other available options, see the user guide.

Since lesshint is highly customizable we recommend you to also take a look at the available rule options to tailor it to your needs.

Run lesshint from the command-line by passing one or more files/directories to recursively scan. Quote the glob patterns for optimal cross-platform results.

lesshint "src/less/" "lib/style.less"

Depending on the linter results and options supplied, the exit status code returned by the CLI will differ.

These codes were chosen with regards to the preferable exit codes.

• AtomLinter plugin - A Linter plugin for Atom.
• autolesshint - Automagically fix errors reported by lesshint.
• Gulp plugin - A gulp plugin for lesshint.
• Grunt plugin - A Grunt plugin for lesshint.
• vscode-lesshint - A VS Code extension for lesshint.

In addition to the linters included with lesshint, it's also possible to include custom ones. For example to check something team or project specific.

For more information on using custom linters, see the user guide.

Reporters are small modules that can be used to perform actions with the lint results, for example printing something to the terminal or generate custom reports.

For more information on using reporters, see the user guide.

• Node API - lesshint's public Node API reference.
• Developing linters - Guide for hacking on linters.
• Developing reporters - Guide for hacking on reporters.