It should be cool if we could have advanced features like syntax validation. To do that I have started a Freemarker Language Server https://github.com/angelozerr/freemarker-languageserver written in Java that you could consume it.
You could do the same thing than https://github.com/microclimate-devops/xml-language-server/blob/master/client-vscode/xml-client/client/extension.js which consumes an XML Language Server written in Java.
If you are interested:
It should be cool if we could have advanced features like syntax validation. To do that I have started a Freemarker Language Server https://github.com/angelozerr/freemarker-languageserver written in Java that you could consume it.
You could do the same thing than https://github.com/microclimate-devops/xml-language-server/blob/master/client-vscode/xml-client/client/extension.js which consumes an XML Language Server written in Java.
If you are interested: