Svelte

Svelte support is available through the Svelte extension.

• Tree Sitter: tree-sitter-grammars/tree-sitter-svelte
• Language Server: sveltejs/language-tools

Extra theme styling configuration

You can modify how certain styles such as directives and modifiers appear in attributes:

"syntax": {
  // Styling for directives (e.g., `class:foo` or `on:click`) (the `on` or `class` part of the attribute).
  "attribute.function": {
    "color": "#ff0000"
  },
  // Styling for modifiers at the end of attributes, e.g. `on:<click|preventDefault|stopPropagation>`
  "attribute.special": {
    "color": "#00ff00"
  }
}

Inlay Hints

Zed sets the following initialization options for inlay hints:

"inlayHints": {
  "parameterNames": {
    "enabled": "all",
    "suppressWhenArgumentMatchesName": false
  },
  "parameterTypes": {
    "enabled": true
  },
  "variableTypes": {
    "enabled": true,
    "suppressWhenTypeMatchesName": false
  },
  "propertyDeclarationTypes": {
    "enabled": true
  },
  "functionLikeReturnTypes": {
    "enabled": true
  },
  "enumMemberValues": {
    "enabled": true
  }
}

to make the language server send back inlay hints when Zed has them enabled in the settings.

Use

"lsp": {
  "svelte-language-server": {
    "initialization_options": {
      "configuration": {
        "typescript": {
          ......
        },
        "javascript": {
          ......
        }
      }
    }
  }
}

to override these settings.

See https://github.com/microsoft/vscode/blob/main/extensions/typescript-language-features/package.json for more information.