# TypeScript Plugin

The TypeScript plugin provides IDE integration for Macroforge, including error
reporting, completions, and type checking for generated code.

## Installation

Bash

```
npm install -D @macroforge/typescript-plugin
```

## Configuration

Add the plugin to your `tsconfig.json`:

tsconfig.json

```
{
  "compilerOptions": {
    "plugins": [
      {
        "name": "@macroforge/typescript-plugin"
      }
    ]
  }
}
```

## VS Code Setup

VS Code uses its own TypeScript version by default. To use the workspace version
(which includes plugins):

1. Open the Command Palette (`Cmd/Ctrl + Shift + P`)
2. Search for "TypeScript: Select TypeScript Version"
3. Choose "Use Workspace Version"

Tip

Add this setting to your `.vscode/settings.json` to make it permanent:

.vscode/settings.json

```
{
  "typescript.tsdk": "node_modules/typescript/lib"
}
```

## Features

### Error Reporting

Errors in macro-generated code are reported at the `@derive` decorator position:

TypeScript

```
/** @derive(Debug) */  // <- Errors appear here
class User {
  name: string;
}
```

### Completions

The plugin provides completions for generated methods:

TypeScript

```
const user = new User("Alice");
user.to  // Suggests: toString(), toJSON(), etc.
```

### Type Information

Hover over generated methods to see their types:

TypeScript

```
// Hover over 'clone' shows:
// (method) User.clone(): User
const copy = user.clone();
```

## Troubleshooting

### Plugin Not Loading

1. Ensure you're using the workspace TypeScript version
2. Restart the TypeScript server (Command Palette → "TypeScript: Restart TS
   Server")
3. Check that the plugin is listed in `tsconfig.json`

### Errors Not Showing

If errors from macros aren't appearing:

1. Make sure the Vite plugin is also installed (for source file watching)
2. Check that your file is saved (plugins process on save)