@codemirror/lang-less 
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This package implements Less language support for the CodeMirror code editor.
The project page has more information, a number of examples and the documentation.
This code is released under an MIT license.
We aim to be an inclusive, welcoming community. To make that explicit, we have a code of conduct that applies to communication around the project.
API Reference
less() → LanguageSupportLanguage support for Less.
lessLanguage: LRLanguageA language provider for Less style sheets.
lessCompletionSource: CompletionSourceProperty, variable, @-variable, and value keyword completion source.