inStock

If you want in stock to be selected for the initial filter. Leave blank if you want both in and out of stock.

accepts	boolean
required	false
values	true / false
default	none

example:

<script>
  var tdsPcInpageConfig = tdsPcInpageConfig || {}
  tdsPcInpageConfig["widgetId"] = {
    widgetOptions: {
      proposition: {
        initialFilter: {
          inStock: true
        }
      }
    }
  }
</script>