/* passing props */

<CasePortalDetailsHeader :selected-case="selectedCase" />

  
  
  
  

/* getting props */

...

	props: {
        selectedCase: {
            type: Object,
            default: function() {
                return {}
            }
        }
    },
    data: () => ({
        selectedCase: this.selectedCase
    }),

...

<CasePortalDetailsHeader selected-case="selectedCase" />
  
 // output: "selectedCase"

<CasePortalDetailsHeader :selected-case="selectedCase" />
  
/* output: 
{
  id: 'ewf443jk',
  ...
}
*/