json_field-8.x-1.x-dev/config/schema/json_field.schema.yml

field.value.json:
  type: mapping
  label: 'Default value'
  mapping:
    value:
      type: string
      label: 'Value'

field.widget.settings.json_textarea:
  type: field.widget.settings.string_textarea
  label: 'Json textarea (multiple rows)'

field.storage_settings.json:
  type: mapping
  mapping:
    size:
      type: integer
      label: Size

field.formatter.settings.json:
  type: mapping
  label: 'JSON field library attach settings'
  mapping:
    attach_library:
      type: boolean
      label: 'Attach library'