OpenTofu

OpenTofu support is available through the OpenTofu extension.

Configuration

In order to automatically use the OpenTofu extension and language server when editing .tf and .tfvars files, either uninstall the Terraform extension or add this to your settings.json:

"file_types": {
  "OpenTofu": ["tf"],
  "OpenTofu Vars": ["tfvars"]
},

See the full list of server settings here.