grafana/public/app/features/canvas/registry.ts

import { Registry } from '@grafana/data';
import { CanvasElementItem, CanvasElementOptions } from './element';
import { iconItem } from './elements/icon';
import { textBoxItem } from './elements/textBox';

export const DEFAULT_CANVAS_ELEMENT_CONFIG: CanvasElementOptions = {
  type: iconItem.id,
  ...iconItem.getNewOptions(),
};

export const canvasElementRegistry = new Registry<CanvasElementItem>(() => [
  iconItem, // default for now
  textBoxItem,
]);