## SSR extension for G6 5.0

This extension package provides SSR support for G6 5.0, which supports canvas rendering in server side.

## Usage

### Install

```bash
npm install @antv/g6-ssr
```

### Render in JavaScript API

> For complete options, please refer to [G6 Graph Options](https://g6.antv.antgroup.com/api/graph/option)

```js
import { createGraph } from '@antv/g6-ssr';

const graph = await createGraph({
  width: 500,
  height: 500,
  imageType: 'png', // or 'jpeg'
  data: {
    // data
  },
  // other options
});

graph.exportToFile('image');
// -> image.png

graph.toBuffer();
// -> get buffer
```

### Render in CLI

```bash
npx g6-ssr export -i [graph-options].json -o ./image
```

### Export SVG / PDF

When render in JavaScript API, you can pass `outputType` option to export SVG or PDF.

```js
const graph = await createGraph({
  width: 500,
  height: 500,
  data: {
    // data
  },
  outputType: 'svg', // or 'pdf'
  // other options
});
```

When render in CLI, you can pass `-t` or `--type` option to export SVG or PDF.

```bash
npx g6-ssr export -i [graph-options].json -o ./file -t pdf
```

### Register Custom G6 Extensions

If you need to register custom extensions of G6, please use the `registry` function exported from `@antv/g6-ssr`.

```js
import { createGraph, registry } from '@antv/g6-ssr';
import { BaseNode, ExtensionCategory } from '@antv/g6';

class CustomNode extends BaseNode {
  // custom node
}

registry(ExtensionCategory.Node, 'custom-node', CustomNode);

const graph = await createGraph({
  width: 500,
  height: 500,
  node: {
    type: 'custom-node',
    // other options
  },
  // other options
});
```

### Use Plugins

When using G6-SSR, you can also use G render plugins. Here's how to use plugins in server-side rendering:

```js
import { createGraph } from '@antv/g6-ssr';
import { Plugin as RoughCanvasPlugin } from '@antv/g-plugin-rough-canvas-renderer';

const graph = await createGraph({
  width: 500,
  height: 500,
  renderPlugins: [new RoughCanvasPlugin()],
  data: {
    // data
  },
});
```

## License

MIT