mercury_editor-2.0.x-dev/components/component-outline/component-outline.schema.yml

# outline.schema.yml
type: object
properties:
  tree:
    type: array
    items:
      $ref: '#/definitions/item'

definitions:
  item:
    type: object
    properties:
      id: { type: string }
      type: { type: string, enum: [component, region] }
      label: { type: string }
      expanded: { type: boolean, default: true }
      attrs:
        type: object
        additionalProperties: true # pass-through attributes
      children:
        type: array
        items:
          $ref: '#/definitions/item'
    required: [id, type, label]