Stimulus LSP

Intelligent Stimulus tooling for Visual Studio Code

Functionality

Currently, this Language Server only works for HTML, though its utility extends to various file types such as ERB, PHP, or Blade files.

Completions

• Data Attributes
• Completions for controller identifiers
• Completions for controller actions
• Completions for controller targets
• Completions for controller values
• Completions for controller classes

Diagnostics

HTML Files

• Missing controllers (stimulus.controller.invalid)
• Missing controller actions (stimulus.action.invalid)
• Missing controller targets (stimulus.controller.target.missing)
• Missing controller values (stimulus.controller.value.missing)
• Invalid action descriptors (stimulus.action.invalid)
• Data attributes format mismatches (stimulus.attribute.mismatch)
• Controller values type mismatches (stimulus.controller.value.type_mismatch)

JavaScript Files/Stimulus Controller Files

• Controller value definition default value type mismatch (stimulus.controller.value_definition.default_value.type_mismatch)
• Unknown value definition type (stimulus.controller.value_definition.unknown_type)
• Controller parsing errors (stimulus.controller.parse_error)
• Import from deprecated packages (stimulus.package.deprecated.import)

Quick-Fixes

• Create a controller with the given identifier (stimulus.controller.create)
• Update controller identifier with did you mean suggestion (stimulus.controller.update)
• Register a controller definition from your project or a NPM package (stimulus.controller.register)
• Update controller action name with did you mean suggestion (stimulus.controller.action.update)
• Implement a missing controller action on controller (stimulus.controller.action.implement)

Structure

.
├── package.json // The extension manifest.
|
├── client // Language Client
│   └── src
│      └── extension.ts // Language Client entry point
|
└── server // Language Server
    └── src
        └── server.ts // Language Server entry point

Running the extension locally

• Run yarn install in this folder. This installs all necessary npm modules in both the client and server folder
• Open VS Code on this folder.
• Press Ctrl+Shift+B to compile the client and server.
• Switch to the Debug viewlet.
• Select Launch Client from the drop down.
• Run the launch config.
• If you want to debug the server as well use the launch configuration Attach to Server
• In the [Extension Development Host] instance of VSCode, open a HTML file.
  • Type <div data-controller="|">, place your cursor where the | is, hit Ctrl+Space and you should see completions.

Install instructions: Neovim

Install instructions can be found at nvim-lspconfig