Helm
Support for Helm in Zed is provided by the community-maintained Helm extension.
- Tree-sitter: tree-sitter-go-template
 - Language Server: mrjosh/helm-ls
 
Setup
Enable Helm language for Helm files by editing your .zed/settings.json and adding:
  "file_types": {
    "Helm": [
      "**/templates/**/*.tpl",
      "**/templates/**/*.yaml",
      "**/templates/**/*.yml",
      "**/helmfile.d/**/*.yaml",
      "**/helmfile.d/**/*.yml",
      "**/values*.yaml"
    ]
  }
This will also mark values.yaml files as the type helm, since helm-ls supports this.