less-loader

A webpack loader that compiles Less files into CSS. Current stable version is 12.3.2 (March 2026), with frequent releases addressing compatibility and bug fixes. Requires Node.js >=18.12.0 as of v12.0.0 (breaking change). Supports Less 3.x or 4.x, webpack 5, and optionally @rspack/core. Key differentiators: tight integration with webpack's module system, support for webpackImporter, and the ability to pass Less options dynamically via loader context.