# Language Configuration Sample This is the source code for the [Language Configuration Guide](https://code.visualstudio.com/api/language-extensions/language-configuration-guide). This sample controls the following [Declarative Language Features](https://code.visualstudio.com/api/language-extensions/overview#declarative-language-support) for JavaScript: - Comment toggling - Brackets definition - Autoclosing - Autosurrounding - Folding - Word pattern - Indentation Rules ## VS Code API ### Contribution Points - [`contributes.languages`](https://code.visualstudio.com/api/references/contribution-points#contributes.languages) ## Running the Sample - Run the `Run Extension` target in the Debug View