license docs-private export function throwNullPortalError ( ) { throw Error ( 'Must provide a portal to attach' ) ; } docs-private export function throwPortalAlreadyAttachedError ( ) { throw Error ( 'Host already has a portal attached' ) ; } docs-private export function throwPortalOutletAlreadyDisposedError ( ) { throw Error ( 'This PortalOutlet has already been disposed' ) ; } docs-private export function throwUnknownPortalTypeError ( ) { throw Error ( 'Attempting to attach an unknown Portal type. BasePortalOutlet accepts either ' + 'a ComponentPortal or a TemplatePortal.' ) ; } docs-private export function throwNullPortalOutletError ( ) { throw Error ( 'Attempting to attach a portal to a null PortalOutlet' ) ; } docs-private export function throwNoPortalAttachedError ( ) { throw Error ( 'Attempting to detach a portal that is not attached to a host' ) ; }