# Configuration

Each config file describes one independent sprite. The CLI does not discover config files automatically, so always pass the path explicitly:

```bash
npx --yes @gromlab/svg-sprites path/to/svg-sprite.config.json
```

## JSON

JSON works for most projects and does not require installing the package locally:

```json
{
  "mode": "next@app/turbopack",
  "name": "app",
  "description": "Shared application icons",
  "input": [
    "./icons",
    "../../assets/icons/**/*.svg",
    "!../../assets/icons/deprecated-*.svg"
  ],
  "transform": {
    "removeSize": true,
    "replaceColors": true,
    "addTransition": true
  },
  "generatedNotice": true
}
```

| Field | Default | Purpose |
|---|---|---|
| `mode` | None | Exact mode matching the framework and bundler |
| `name` | Kebab-case module directory name; for `svg-sprite` and `svg-sprites`, the parent directory name | Sprite name; in modes with a component, it also determines the component and type names |
| `description` | None | Description used in types and the Viewer |
| `input` | `./icons` | Directory, SVG file, glob pattern, or array of sources |
| `transform` | All enabled | SVG preparation options |
| `generatedNotice` | `true` | Full or compact warning in generated files |

Paths and glob patterns in `input` are resolved relative to the config file's directory. A pattern prefixed with `!` excludes matches.

## JavaScript

A JavaScript config default-exports a plain object:

```js
export default {
  mode: 'react@vite',
  name: 'icons',
  input: './icons',
}
```

Pass the path to the `.js` file to the CLI just like a JSON file:

```bash
npx --yes @gromlab/svg-sprites path/to/svg-sprite.config.js
```

## TypeScript

To type-check a TypeScript config, install the package as a development dependency:

```bash
npm install --save-dev @gromlab/svg-sprites
```

Use `defineSpriteConfig`:

```ts
import { defineSpriteConfig } from '@gromlab/svg-sprites'

export default defineSpriteConfig({
  mode: 'react@vite',
  name: 'icons',
  input: './icons',
})
```

Alternatively, use `satisfies` with a type-only import:

```ts
import type { SpriteConfig } from '@gromlab/svg-sprites'

export default {
  mode: 'react@vite',
  name: 'icons',
  input: './icons',
} satisfies SpriteConfig
```

The CLI loads `.ts` config files directly:

```bash
npx --yes @gromlab/svg-sprites path/to/svg-sprite.config.ts
```

For the complete list of modes, CLI flags, naming rules, and transform options, see the [technical reference](reference/technical.md).