Popsu-coloque/web/core/modules/image/migrations/d7_image_styles.yml

id: d7_image_styles
label: Image styles
migration_tags:
  - Drupal 7
  - Configuration
source:
  plugin: d7_image_styles
process:
  name: name
  label: label
  effects:
    plugin: sub_process
    source: effects
    process:
      id: name
      weight: weight
      data: data
destination:
  plugin: entity:image_style