@wordpress/block-editor/build-module/hooks/settings.js

Generic block editor.

/**
 * WordPress dependencies
 */
import { addFilter } from '@wordpress/hooks';
import { hasBlockSupport } from '@wordpress/blocks';
const hasSettingsSupport = blockType => hasBlockSupport(blockType, '__experimentalSettings', false);
function addAttribute(settings) {
  if (!hasSettingsSupport(settings)) {
    return settings;
  }

  // Allow blocks to specify their own attribute definition with default values if needed.
  if (!settings?.attributes?.settings) {
    settings.attributes = {
      ...settings.attributes,
      settings: {
        type: 'object'
      }
    };
  }
  return settings;
}
addFilter('blocks.registerBlockType', 'core/settings/addAttribute', addAttribute);
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