codemirror-lang-wren 
This package implements Wren language support for the CodeMirror code editor. Originally derived from the JavaScript grammar and language support.
The project page for CodeMirror has more information, a number of examples and the documentation.
This code is released under an MIT license.
Language Support + Lezer Grammar
This includes both the CodeMirror LanguageSupport and the LezerLanguage grammar all bundled into a single small repository with a simple build process.
Maintainers
There is a very rough developer tool in devtool that can be used for testing.
npm run build-devtool
API Reference
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wren() → LanguageSupport -
Wren support. Includes snippet completion.
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wrenLanguage: LezerLanguage -
A language provider based on the Lezer Wren parser provided in this very same package, extended with highlighting and indentation information.
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lezerParser: Lezer#Parser -
Lezer Wren parser.
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snippets: Completion[] -
A collection of simple Wren-related snippets.