currency-8.x-3.3/config/schema/currency.views.schema.yml

views.field.currency_amount:
  type: views_field
  label: 'Currency amount'
  mapping:
    currency_round:
      label: Round amounts
      type: boolean

views.filter.currency:
  type: views_filter
  label: 'Currency'
  mapping:
    value:
      type: sequence
      label: 'Currencies'
      sequence:
        type: string
        label: 'Currency code'